subject:(Nonlinear finite element dispersion)

University of Manchester

1. Maslan, Mohamad Haidir. Development of Predictive Finite Element Models for Complete Contact Fretting Fatigue.

Degree: 2016, University of Manchester

URL: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:300561

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Nucleation and propagation of cracks under fretting conditions has been a subject of study for many years. An extensive experimental investigation to study these cracks… (more)

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Nucleation and propagation of cracks under fretting conditions has been a subject of study for many years. An extensive experimental investigation to study these cracks was undertaken by Royal Aerospace Establishment (RAE Farnborough). Of particular interest to RAE was an Aluminium alloy (L65) developed for aerospace applications.Many researchers have studied fretting damage and fatigue cracks. Some have examined damage development due to wear, whilst others have analysed cracks under linear elastic fracture mechanics (LEFM) domain. To date, no attempt has been made to develop an integrated numerical model which incorporates all aspects of fretting fatigue i.e. nucleation, initial (or early) crack growth, and long crack propagation. The development of such a model is the principal aim of this work. It is expected that the integrated approach will provide the basis for a standard fretting fatigue analysis of other materials, components, and structures using the finite element method (FEM).This study uses the earlier experimental results with RAE as the reference for comparison. The approach followed is to implement the various stages of fretting in a commercial finite element code, ABAQUS. Unlike previously used simple FE models, both specimen (Aluminium alloy) and the fretting pad (steel) are modelled to simulate the real contact conditions including slip.Various predictive models for crack nucleation (based on damage) and propagation (based on fracture mechanics) are developed, tested, and implemented in ABAQUS. Results clearly show that these models together provide a good estimation tool for predicting total life in complete contact fretting fatigue. It is envisaged that the integrated model will be easily utilised for other materials, components, and structures subjected to fretting fatigue conditions with minimum experimental testing required.

Nucleation and propagation of cracks under fretting conditions has been a subject of study for many years. An extensive experimental investigation to study these cracks was undertaken by Royal Aerospace Establishment (RAE Farnborough). Of particular interest to RAE was an Aluminium alloy (L65) developed for aerospace applications.Many researchers have studied fretting damage and fatigue cracks. Some have examined damage development due to wear, whilst others have analysed cracks under linear elastic fracture mechanics (LEFM) domain. To date, no attempt has been made to develop an integrated numerical model which incorporates all aspects of fretting fatigue i.e. nucleation, initial (or early) crack growth, and long crack propagation. The development of such a model is the principal aim of this work. It is expected that the integrated approach will provide the basis for a standard fretting fatigue analysis of other materials, components, and structures using the finite element method (FEM).This study uses the earlier experimental results with RAE as the reference for comparison. The approach followed is to implement the various stages of fretting in a commercial finite…

Advisors/Committee Members: Sheikh, Mohammad.

Subjects/Keywords: Fretting Fatigue; Finite Element Methods

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Maslan, M. H. (2016). Development of Predictive Finite Element Models for Complete Contact Fretting Fatigue. (Doctoral Dissertation). University of Manchester. Retrieved from http://www.manchester.ac.uk/escholar/uk-ac-man-scw:300561

Chicago Manual of Style (16^th Edition):

Maslan, Mohamad Haidir. “Development of Predictive Finite Element Models for Complete Contact Fretting Fatigue.” 2016. Doctoral Dissertation, University of Manchester. Accessed December 14, 2019. http://www.manchester.ac.uk/escholar/uk-ac-man-scw:300561.

MLA Handbook (7^th Edition):

Maslan, Mohamad Haidir. “Development of Predictive Finite Element Models for Complete Contact Fretting Fatigue.” 2016. Web. 14 Dec 2019.

Vancouver:

Maslan MH. Development of Predictive Finite Element Models for Complete Contact Fretting Fatigue. [Internet] [Doctoral dissertation]. University of Manchester; 2016. [cited 2019 Dec 14]. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:300561.

Council of Science Editors:

Maslan MH. Development of Predictive Finite Element Models for Complete Contact Fretting Fatigue. [Doctoral Dissertation]. University of Manchester; 2016. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:300561

University of Manchester

2. Perez Hernandez, Alejandro. An investigation of automotive springs: ageing effects.

Degree: 2017, University of Manchester

URL: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:306960

► This work aims to simulate and compare the spring performance before and after corrosion. The microstructure of a material commonly used by the spring automotive… (more)

Subjects/Keywords: Finite Element Modelling; automotive springs

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APA (6^th Edition):

Perez Hernandez, A. (2017). An investigation of automotive springs: ageing effects. (Doctoral Dissertation). University of Manchester. Retrieved from http://www.manchester.ac.uk/escholar/uk-ac-man-scw:306960

Chicago Manual of Style (16^th Edition):

Perez Hernandez, Alejandro. “An investigation of automotive springs: ageing effects.” 2017. Doctoral Dissertation, University of Manchester. Accessed December 14, 2019. http://www.manchester.ac.uk/escholar/uk-ac-man-scw:306960.

MLA Handbook (7^th Edition):

Perez Hernandez, Alejandro. “An investigation of automotive springs: ageing effects.” 2017. Web. 14 Dec 2019.

Vancouver:

Perez Hernandez A. An investigation of automotive springs: ageing effects. [Internet] [Doctoral dissertation]. University of Manchester; 2017. [cited 2019 Dec 14]. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:306960.

Council of Science Editors:

Perez Hernandez A. An investigation of automotive springs: ageing effects. [Doctoral Dissertation]. University of Manchester; 2017. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:306960

University of Manchester

3. Al-Tamimi, Anees Fadhel Saad. Please note, you ONLY need to submit printed and bound copies by the appropriate deadline for EXAMINATION submissions (including re-submission). You do not need to submit printed and bound copies of your final thesis.

Degree: 2018, University of Manchester

URL: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:316135

► Introducing new complex metal forming processes in industry commonly involves a trial and error approach to ensure that the final product requirements are met. Detailed… (more)

▼ Introducing new complex metal forming processes in industry commonly involves a trial and error approach to ensure that the final product requirements are met. Detailed process modelling, analysis and small-scale feasibility trials could be carried out instead. A fundamental concern of scaled experiments, however, is whether the results obtained can be guaranteed to be representative of the associated industrial processes. Presently, this is not the case with classical approaches founded on dimensional analysis providing little direction for the design of scaled metal-forming experiments. The difficulty is that classical approaches often focus predominantly on constitutive equations (which indirectly represent micro-structural behaviour) and thus focus on aspects that invariably cannot be scaled. The research aims to introduce a novel technique for scaling metal forming processes, founded on the idea that scaling can be achieved by scaling space itself. With this approach, the physics in two spaces is described using transport equations and are deemed to possess finite similitude if found to be proportional. Finite similitude can be shown to always exist in continuum mechanics for isotropic scaling and it is demonstrated here how the concept can be used to design experiments. Validation of the approach is achieved by means of scaled experimental, numerical and analytical solutions of scaled upsetting tests (i.e. cylindrical and ring samples) and extrusion process . Three trial materials with different dimensions are tested and distinguished by the degree of strain softening, strain hardening and near perfect-plastic behaviour. Finite similitude results confirm that any discrepancies between the maximum loads are substantially reduced when the new scaling theory is applied. Best results are obtained when the same material is adopted for both full and small-scale experimentation. In addition, this work examines the idea of applying ultrasonic vibration to trial models in order to reduce the mismatch in the results between the trial and scaled models. The goal here is to improve trial-space models so that they are more representative of the behaviour of larger scaled processes. Advisors/Committee Members: DARVIZEH, ROOHOOLAMIN R, Davey, Keith, Darvizeh, Roohoolamin.

Subjects/Keywords: Scaling; Metal forming; Ultrasonic vibration; Finite element

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APA (6^th Edition):

Al-Tamimi, A. F. S. (2018). Please note, you ONLY need to submit printed and bound copies by the appropriate deadline for EXAMINATION submissions (including re-submission). You do not need to submit printed and bound copies of your final thesis. (Doctoral Dissertation). University of Manchester. Retrieved from http://www.manchester.ac.uk/escholar/uk-ac-man-scw:316135

Chicago Manual of Style (16^th Edition):

Al-Tamimi, Anees Fadhel Saad. “Please note, you ONLY need to submit printed and bound copies by the appropriate deadline for EXAMINATION submissions (including re-submission). You do not need to submit printed and bound copies of your final thesis.” 2018. Doctoral Dissertation, University of Manchester. Accessed December 14, 2019. http://www.manchester.ac.uk/escholar/uk-ac-man-scw:316135.

MLA Handbook (7^th Edition):

Al-Tamimi, Anees Fadhel Saad. “Please note, you ONLY need to submit printed and bound copies by the appropriate deadline for EXAMINATION submissions (including re-submission). You do not need to submit printed and bound copies of your final thesis.” 2018. Web. 14 Dec 2019.

Vancouver:

Al-Tamimi AFS. Please note, you ONLY need to submit printed and bound copies by the appropriate deadline for EXAMINATION submissions (including re-submission). You do not need to submit printed and bound copies of your final thesis. [Internet] [Doctoral dissertation]. University of Manchester; 2018. [cited 2019 Dec 14]. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:316135.

Council of Science Editors:

Al-Tamimi AFS. Please note, you ONLY need to submit printed and bound copies by the appropriate deadline for EXAMINATION submissions (including re-submission). You do not need to submit printed and bound copies of your final thesis. [Doctoral Dissertation]. University of Manchester; 2018. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:316135

4. Abdullah, Ahmad Sufian. CRASH SIMULATION OF FIBRE METAL LAMINATE FUSELAGE.

Degree: 2014, University of Manchester

URL: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:239049

► A finite element model of fibre metal laminate (FML) fuselage was developed in order to evaluate its impact response under survivable crash event. To create… (more)

▼ A finite element model of fibre metal laminate (FML) fuselage was developed in order to evaluate its impact response under survivable crash event. To create a reliable crash finite element (FE) model of FML fuselage, a ‘building block approach’ is adapted. It involves a series of validation and verification tasks in order to establish reliable material and damage models, verified impact model with structural instability and large displacement and verified individual fuselage structure under crash event. This novel development methodology successfully produced an FE model to simulate crash of both aluminium alloy and FML fuselage under survivable crash event using ABAQUS/Explicit. On the other hand, this allows the author to have privilege to evaluate crashworthiness of fuselage that implements FML fuselage skin for the whole fuselage section for the first time in aircraft research field and industry. The FE models consist of a two station fuselage section with one meter longitudinal length which is based on commercial Boeing 737 aircraft. For FML fuselage, the classical aluminium alloy skin was replaced by GLARE grade 5-2/1. The impact response of both fuselages was compared to each other and the results were discussed in terms of energy dissipation, crushing distance, failure modes, failure mechanisms and acceleration response at floor-level. Overall, it was observed that FML fuselage responded similarly to aluminium alloy fuselage with some minor differences which conclusively gives great confidence to aircraft designer to use FML as fuselage skin for the whole fuselage section. In terms of crushing distance, FML fuselage skin contributed to the failure mechanisms of the fuselage section that lead to higher crushing distance than in aluminium alloy fuselage. The existence of various failure modes within FML caused slight differences from the aluminium fuselage in terms of deformation process and energy dissipation. These complex failure modes could potentially be manipulated to produce future aircraft structure with better crashworthiness performance. Advisors/Committee Members: Tafreshi, Azam.

Subjects/Keywords: CRASHWORTHINESS; AIRCRAFT CRASH SIMULATION; FIBRE METAL LAMINATE FUSELAGE; NONLINEAR FINITE ELEMENT MODEL OF IMPACT; ABAQUS/EXPLICIT

…121 Table ‎5-6. Frame finite element models with various mesh sizes… …166 9 Abstract A finite element model of fibre metal laminate (FML) fuselage… …create a reliable crash finite element (FE) model of FML fuselage, a ‘building block… …using experimental method. On the other side, numerical analysis and finite element analysis… …most of finite element 14 model for crashworthiness evaluation is verified by experiment of…

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Abdullah, A. S. (2014). CRASH SIMULATION OF FIBRE METAL LAMINATE FUSELAGE. (Doctoral Dissertation). University of Manchester. Retrieved from http://www.manchester.ac.uk/escholar/uk-ac-man-scw:239049

Chicago Manual of Style (16^th Edition):

Abdullah, Ahmad Sufian. “CRASH SIMULATION OF FIBRE METAL LAMINATE FUSELAGE.” 2014. Doctoral Dissertation, University of Manchester. Accessed December 14, 2019. http://www.manchester.ac.uk/escholar/uk-ac-man-scw:239049.

MLA Handbook (7^th Edition):

Abdullah, Ahmad Sufian. “CRASH SIMULATION OF FIBRE METAL LAMINATE FUSELAGE.” 2014. Web. 14 Dec 2019.

Vancouver:

Abdullah AS. CRASH SIMULATION OF FIBRE METAL LAMINATE FUSELAGE. [Internet] [Doctoral dissertation]. University of Manchester; 2014. [cited 2019 Dec 14]. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:239049.

Council of Science Editors:

Abdullah AS. CRASH SIMULATION OF FIBRE METAL LAMINATE FUSELAGE. [Doctoral Dissertation]. University of Manchester; 2014. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:239049

5. Abdullah, Ahmad Sufian. Crash simulation of fibre metal laminate fuselage.

Degree: PhD, 2014, University of Manchester

URL: https://www.research.manchester.ac.uk/portal/en/theses/crash-simulation-of-fibre-metal-laminate-fuselage(fd254489-243f-4071-8dea-ca9e2dd9d3bc).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.632219

► A finite element model of fibre metal laminate (FML) fuselage was developed in order to evaluate its impact response under survivable crash event. To create… (more)

▼ A finite element model of fibre metal laminate (FML) fuselage was developed in order to evaluate its impact response under survivable crash event. To create a reliable crash finite element (FE) model of FML fuselage, a ‘building block approach’ is adapted. It involves a series of validation and verification tasks in order to establish reliable material and damage models, verified impact model with structural instability and large displacement and verified individual fuselage structure under crash event. This novel development methodology successfully produced an FE model to simulate crash of both aluminium alloy and FML fuselage under survivable crash event using ABAQUS/Explicit. On the other hand, this allows the author to have privilege to evaluate crashworthiness of fuselage that implements FML fuselage skin for the whole fuselage section for the first time in aircraft research field and industry. The FE models consist of a two station fuselage section with one meter longitudinal length which is based on commercial Boeing 737 aircraft. For FML fuselage, the classical aluminium alloy skin was replaced by GLARE grade 5-2/1. The impact response of both fuselages was compared to each other and the results were discussed in terms of energy dissipation, crushing distance, failure modes, failure mechanisms and acceleration response at floor-level. Overall, it was observed that FML fuselage responded similarly to aluminium alloy fuselage with some minor differences which conclusively gives great confidence to aircraft designer to use FML as fuselage skin for the whole fuselage section. In terms of crushing distance, FML fuselage skin contributed to the failure mechanisms of the fuselage section that lead to higher crushing distance than in aluminium alloy fuselage. The existence of various failure modes within FML caused slight differences from the aluminium fuselage in terms of deformation process and energy dissipation. These complex failure modes could potentially be manipulated to produce future aircraft structure with better crashworthiness performance.

Subjects/Keywords: 629.134; crashworthiness; aircraft crash simulation; fibre metal laminate fuselage; nonlinear finite element model of impact; ABAQUS/Explicit

…121 Table ‎5-6. Frame finite element models with various mesh sizes… …166 9 Abstract A finite element model of fibre metal laminate (FML) fuselage… …create a reliable crash finite element (FE) model of FML fuselage, a ‘building block… …using experimental method. On the other side, numerical analysis and finite element analysis… …most of finite element 14 model for crashworthiness evaluation is verified by experiment of…

10 more images…

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Abdullah, A. S. (2014). Crash simulation of fibre metal laminate fuselage. (Doctoral Dissertation). University of Manchester. Retrieved from https://www.research.manchester.ac.uk/portal/en/theses/crash-simulation-of-fibre-metal-laminate-fuselage(fd254489-243f-4071-8dea-ca9e2dd9d3bc).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.632219

Chicago Manual of Style (16^th Edition):

Abdullah, Ahmad Sufian. “Crash simulation of fibre metal laminate fuselage.” 2014. Doctoral Dissertation, University of Manchester. Accessed December 14, 2019. https://www.research.manchester.ac.uk/portal/en/theses/crash-simulation-of-fibre-metal-laminate-fuselage(fd254489-243f-4071-8dea-ca9e2dd9d3bc).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.632219.

MLA Handbook (7^th Edition):

Abdullah, Ahmad Sufian. “Crash simulation of fibre metal laminate fuselage.” 2014. Web. 14 Dec 2019.

Vancouver:

Abdullah AS. Crash simulation of fibre metal laminate fuselage. [Internet] [Doctoral dissertation]. University of Manchester; 2014. [cited 2019 Dec 14]. Available from: https://www.research.manchester.ac.uk/portal/en/theses/crash-simulation-of-fibre-metal-laminate-fuselage(fd254489-243f-4071-8dea-ca9e2dd9d3bc).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.632219.

Council of Science Editors:

Abdullah AS. Crash simulation of fibre metal laminate fuselage. [Doctoral Dissertation]. University of Manchester; 2014. Available from: https://www.research.manchester.ac.uk/portal/en/theses/crash-simulation-of-fibre-metal-laminate-fuselage(fd254489-243f-4071-8dea-ca9e2dd9d3bc).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.632219

University of Manchester

6. Tsamos, Athanasios. HIGHLY OPTIMIZED & COMPUTATIONALLY EFFICIENT COHESIVE ELEMENTS FOR MICROSTRUCTURAL MODELLING OF CFRCs.

Degree: 2018, University of Manchester

URL: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:315211

► The predictive capability of simulation for advanced materials is limited only by the available computational power. More specifically, composites exhibit a very convoluted response under… (more)

▼ The predictive capability of simulation for advanced materials is limited only by the available computational power. More specifically, composites exhibit a very convoluted response under loading due to the complexity and certain randomness that can be found in their microstructures. Despite the fact that there are available tools, both analytical and numerical, that can be employed in order to simplify their analysis macroscopically through various homogenization procedures, these are rendered inadequate in predicting damage evolution and eventually fracture under cyclic loading or after an impact. This project focuses on finite element modelling using cohesive elements. However, the use of cohesive elements increases the size of problem that needs to be solved. Therefore, they are used moderately and sporadically in areas where fracture is expected to occur. Heading towards the so called â€œVirtual Testing of Composite Materialsâ€, one can possibly introduce these special elements everywhere in a mesh and therefore perform the modelling of the damaging mechanisms on a microstructural level with however a colossal increase of the problem size. This work contributes towards this goal by giving the right directions and in-depth the necessary theoretical background in the field to aid other researchers. That is, a comprehensive literature review on the microstructural properties and damage mechanisms present in fibrous composite materials, the traditional modelling techniques along with a literature review on modelling damage specifically with cohesive elements followed by notable case studies on the latter subject. Moreover, a brief literature review on high performance computing is included as well since this project aims towards massive simulations with cohesive elements (Virtual Testing of Composite Materials). Furthermore, a thorough nonetheless easy to â€˜read-thoughâ€™ guide on the formulation of two decohesion elements, suitable for modelling carbon fibre composites is given as well. However, the main and most significant contribution of this work, is the actual generation/programming of two highly computationally optimized decohesion elements with a well established cohesive zone model suitable for modelling advanced composite materials along with the verification procedures with state-of-the-art test problems. Although the programmed cohesive elements do not incorporate any novel cohesive zone model (CZM), they manage to perform the simulations faster and with better scalability in comparison with the industryâ€™s standard simulation softwareâ€™s in-built decohesion elements, due to the fact that they have been programmed with very sophisticated techniques in order to minimize their computational impact (Reduced Floating Point Operations) on an element level and exhibit improved scalability (Reduced data transfer: Memory Input/Output Operations) on overpopulated computing nodes (more efficient exploitation of available computational resources). As it is shown, that is because of the introduction of an… Advisors/Committee Members: MARGETTS, LEE L, Jivkov, Andrey, Margetts, Lee.

Subjects/Keywords: Cohesive Elements; Carbon Fibre Reinforced Composites; Microstructural Modelling; Element Code Optimization; Finite Element Efficiency; Fracture Mechanics; Cohesive Element Formulation; Decohesion Element Formulation; Optimized Cohesive Element

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Tsamos, A. (2018). HIGHLY OPTIMIZED & COMPUTATIONALLY EFFICIENT COHESIVE ELEMENTS FOR MICROSTRUCTURAL MODELLING OF CFRCs. (Doctoral Dissertation). University of Manchester. Retrieved from http://www.manchester.ac.uk/escholar/uk-ac-man-scw:315211

Chicago Manual of Style (16^th Edition):

Tsamos, Athanasios. “HIGHLY OPTIMIZED & COMPUTATIONALLY EFFICIENT COHESIVE ELEMENTS FOR MICROSTRUCTURAL MODELLING OF CFRCs.” 2018. Doctoral Dissertation, University of Manchester. Accessed December 14, 2019. http://www.manchester.ac.uk/escholar/uk-ac-man-scw:315211.

MLA Handbook (7^th Edition):

Tsamos, Athanasios. “HIGHLY OPTIMIZED & COMPUTATIONALLY EFFICIENT COHESIVE ELEMENTS FOR MICROSTRUCTURAL MODELLING OF CFRCs.” 2018. Web. 14 Dec 2019.

Vancouver:

Tsamos A. HIGHLY OPTIMIZED & COMPUTATIONALLY EFFICIENT COHESIVE ELEMENTS FOR MICROSTRUCTURAL MODELLING OF CFRCs. [Internet] [Doctoral dissertation]. University of Manchester; 2018. [cited 2019 Dec 14]. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:315211.

Council of Science Editors:

Tsamos A. HIGHLY OPTIMIZED & COMPUTATIONALLY EFFICIENT COHESIVE ELEMENTS FOR MICROSTRUCTURAL MODELLING OF CFRCs. [Doctoral Dissertation]. University of Manchester; 2018. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:315211

University of Manchester

7. Yue, Liyang. Laser cleaning of slotted components.

Degree: PhD, 2013, University of Manchester

URL: https://www.research.manchester.ac.uk/portal/en/theses/laser-cleaning-of-slotted-components(c66c7114-d1d7-40be-a2c9-b99329435a43).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.570281

► Laser cleaning is a non contact, highly controllable process for the removal of contaminants from a surface with minimum or no damage to the substrate… (more)

Subjects/Keywords: 621.36; laser; laser cleaning; slot; excimer laser; finite element method

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APA (6^th Edition):

Yue, L. (2013). Laser cleaning of slotted components. (Doctoral Dissertation). University of Manchester. Retrieved from https://www.research.manchester.ac.uk/portal/en/theses/laser-cleaning-of-slotted-components(c66c7114-d1d7-40be-a2c9-b99329435a43).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.570281

Chicago Manual of Style (16^th Edition):

Yue, Liyang. “Laser cleaning of slotted components.” 2013. Doctoral Dissertation, University of Manchester. Accessed December 14, 2019. https://www.research.manchester.ac.uk/portal/en/theses/laser-cleaning-of-slotted-components(c66c7114-d1d7-40be-a2c9-b99329435a43).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.570281.

MLA Handbook (7^th Edition):

Yue, Liyang. “Laser cleaning of slotted components.” 2013. Web. 14 Dec 2019.

Vancouver:

Yue L. Laser cleaning of slotted components. [Internet] [Doctoral dissertation]. University of Manchester; 2013. [cited 2019 Dec 14]. Available from: https://www.research.manchester.ac.uk/portal/en/theses/laser-cleaning-of-slotted-components(c66c7114-d1d7-40be-a2c9-b99329435a43).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.570281.

Council of Science Editors:

Yue L. Laser cleaning of slotted components. [Doctoral Dissertation]. University of Manchester; 2013. Available from: https://www.research.manchester.ac.uk/portal/en/theses/laser-cleaning-of-slotted-components(c66c7114-d1d7-40be-a2c9-b99329435a43).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.570281

University of Manchester

8. Falkingham, Peter Lewis. Computer simulation of dinosaur tracks.

Degree: PhD, 2010, University of Manchester

URL: https://www.research.manchester.ac.uk/portal/en/theses/computer-simulation-of-dinosaur-tracks(3b3b150d-c05e-4667-96b5-3c17405856e5).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.553312

► Fossil tracks represent the only direct record of behaviour and locomotion of extinct animals. A computer model using finite element analysis (FEA) has been developed… (more)

▼ Fossil tracks represent the only direct record of behaviour and locomotion of extinct animals. A computer model using finite element analysis (FEA) has been developed to simulate vertebrate track formation in cohesive substrates. This model has been designed for, and successfully run on, high performance computing (HPC) resources. A number of individual studies were carried out using the computer model to simulate both abstract indenters and virtual dinosaur autopodia. In addition to the simulation studies, two fossil tracks were described, including the first report of bird tracks at the Mammoth Site of Hot Springs, South Dakota (USA) and a re-description of a 'dinosaur tail drag' as the trace of a crocodilian. Using the computer model, it has been shown that in a wet, soft mud the indentation of a non-webbed virtual tridactyl foot created a resultant track with features analogous to 'webbing' between digits. This 'webbing' was a function of sediment deformation and subsequent failure in 3D, specific to rheology. Apparent webbing impressions were clearly developed only within a limited range of sediment conditions and pedal geometry. Indenter (pedal) geometry and morphology affect track depth independently of substrate and loading parameters. More complex morphologies interact with the cohesive substrate creating a lower effective load than that applied. In non-cohesive substrates such as sand, this effect is reversed, and it is the more compact morphologies that indent to a lesser degree. Virtual sauropod tracks were modelled, based on published soft tissue reconstructions of autopodia anatomy, and published mass/centre of mass estimates. It was shown that foot morphology and differential loading between fore- and hind- limbs leads to a range of substrates in which only the manus or pes are able to generate tracks. This offers a new mechanism for the formation of manus-only sauropod trackways, previously interpreted as having been made by swimming dinosaurs. A series of tracks were simulated using input data (loads, pedal morphologies) from four different dinosaurs (Brachiosaurus, Tyrannosaurus, Struthiomimus, and Edmontosaurus). The cohesive substrates used displayed a 'Goldilocks' effect, allowing the formation for tracks only for a very limited range of loads for any given foot. In addition, there was a strong bias toward larger animals, both in homogeneous and theoretically heterogeneous substrates. These findings imply that interpretations from track assemblages must consider that only a small proportion of the total fauna present may be recorded as a track assemblage due to substrate properties. The use of FEA to simulate dinosaur track formation has been shown to be successful, and offers a number of advantages over physical modelling including; consistency between experiments, specific control over input variables, rapid undertaking of repeatable experiments, and the ability to view subsurface deformation non-destructively. It is hoped that this work will lead to an increased interest in modelling tracks,…

Subjects/Keywords: 560; Dinosaur; footprint; Soil mechanics; Finite Element Analysis (FEA)

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APA (6^th Edition):

Falkingham, P. L. (2010). Computer simulation of dinosaur tracks. (Doctoral Dissertation). University of Manchester. Retrieved from https://www.research.manchester.ac.uk/portal/en/theses/computer-simulation-of-dinosaur-tracks(3b3b150d-c05e-4667-96b5-3c17405856e5).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.553312

Chicago Manual of Style (16^th Edition):

Falkingham, Peter Lewis. “Computer simulation of dinosaur tracks.” 2010. Doctoral Dissertation, University of Manchester. Accessed December 14, 2019. https://www.research.manchester.ac.uk/portal/en/theses/computer-simulation-of-dinosaur-tracks(3b3b150d-c05e-4667-96b5-3c17405856e5).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.553312.

MLA Handbook (7^th Edition):

Falkingham, Peter Lewis. “Computer simulation of dinosaur tracks.” 2010. Web. 14 Dec 2019.

Vancouver:

Falkingham PL. Computer simulation of dinosaur tracks. [Internet] [Doctoral dissertation]. University of Manchester; 2010. [cited 2019 Dec 14]. Available from: https://www.research.manchester.ac.uk/portal/en/theses/computer-simulation-of-dinosaur-tracks(3b3b150d-c05e-4667-96b5-3c17405856e5).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.553312.

Council of Science Editors:

Falkingham PL. Computer simulation of dinosaur tracks. [Doctoral Dissertation]. University of Manchester; 2010. Available from: https://www.research.manchester.ac.uk/portal/en/theses/computer-simulation-of-dinosaur-tracks(3b3b150d-c05e-4667-96b5-3c17405856e5).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.553312

University of Manchester

9. Salleh, Suhaila. Modelling pitting corrosion in carbon steel materials.

Degree: PhD, 2013, University of Manchester

URL: https://www.research.manchester.ac.uk/portal/en/theses/modelling-pitting-corrosion-in-carbon-steel-materials(40658bff-f7c5-4675-a7f9-7a5519c6fdd2).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.568647

► Pitting corrosion is one of the most destructive types of metal loss. The purpose of this study was to investigate the evolution, or in other… (more)

Subjects/Keywords: 620.1; modelling; localized corrosion; carbon steel; finite element; COMSOL

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Salleh, S. (2013). Modelling pitting corrosion in carbon steel materials. (Doctoral Dissertation). University of Manchester. Retrieved from https://www.research.manchester.ac.uk/portal/en/theses/modelling-pitting-corrosion-in-carbon-steel-materials(40658bff-f7c5-4675-a7f9-7a5519c6fdd2).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.568647

Chicago Manual of Style (16^th Edition):

Salleh, Suhaila. “Modelling pitting corrosion in carbon steel materials.” 2013. Doctoral Dissertation, University of Manchester. Accessed December 14, 2019. https://www.research.manchester.ac.uk/portal/en/theses/modelling-pitting-corrosion-in-carbon-steel-materials(40658bff-f7c5-4675-a7f9-7a5519c6fdd2).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.568647.

MLA Handbook (7^th Edition):

Salleh, Suhaila. “Modelling pitting corrosion in carbon steel materials.” 2013. Web. 14 Dec 2019.

Vancouver:

Salleh S. Modelling pitting corrosion in carbon steel materials. [Internet] [Doctoral dissertation]. University of Manchester; 2013. [cited 2019 Dec 14]. Available from: https://www.research.manchester.ac.uk/portal/en/theses/modelling-pitting-corrosion-in-carbon-steel-materials(40658bff-f7c5-4675-a7f9-7a5519c6fdd2).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.568647.

Council of Science Editors:

Salleh S. Modelling pitting corrosion in carbon steel materials. [Doctoral Dissertation]. University of Manchester; 2013. Available from: https://www.research.manchester.ac.uk/portal/en/theses/modelling-pitting-corrosion-in-carbon-steel-materials(40658bff-f7c5-4675-a7f9-7a5519c6fdd2).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.568647

University of Manchester

10. Darvizeh, Roohoolamin. Non-physical finite element method for modelling of material discontinuities.

Degree: PhD, 2014, University of Manchester

URL: https://www.research.manchester.ac.uk/portal/en/theses/nonphysical-finite-element-method-for-modelling-of-material-discontinuities(62b803fa-fb34-425e-8a77-a77822a078ab).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.626968

► A recent development for the numerical modelling of material discontinuities is presented in this thesis. The concepts considered here are founded on the idea that… (more)

▼ A recent development for the numerical modelling of material discontinuities is presented in this thesis. The concepts considered here are founded on the idea that for each physical variable (e.g. temperature, enthalpy, etc.) there exists an associated non-physical variable. The numerical technique presented here that utilises non-physical variables is called the non-physical finite element method (NPFEM). The NPFEM involves the replacement of a discontinuous physical field with a limiting-continuous non-physical field (i.e. abstract mathematical object) which is continuous over the domain but has a source-like behaviour at the place of a discontinuity. Non-physical variables are rigorously defined in the thesis and are related to their physical counterparts by means of transport equations. As a consequence of the coupling of physical and non-physical variables, equivalent forms of transport equations arise. However, as a consequence of limiting continuity the adopted approach permits the representation of non-physical variables by means of a polynomial basis standard to the continuous Galerkin finite element method (CGFEM).The non-physical method was originally devised for the modelling of material discontinuities in solidification problems involving a strong discontinuity in enthalpy and a weak discontinuity in temperature. The work presented here extends previous works by providing a general framework for the non-physical method to facilitate modelling of strong material discontinuities in all the state variables along with velocity arising with material discontinuities. The approach is founded on the integral transport form of the governing conservation laws. The advantage of the non-physical methodology is that it permits the precise annihilation of discontinuous behaviour in the governing finite element equations by means of a distribution like source term at the discontinuity location. Different case studies of single and multiple stationary and transient 1-D shock waves in fluids and solids are undertaken to show the accuracy, flexibility and robustness of the non-physical finite element method. Also presented as part of the work is a newly developed analytical model for the 1-D high velocity crushing of the cellular bars.

Subjects/Keywords: 620.1; Non-physical; Finite element; Shock wave; Material Discontinuity

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Darvizeh, R. (2014). Non-physical finite element method for modelling of material discontinuities. (Doctoral Dissertation). University of Manchester. Retrieved from https://www.research.manchester.ac.uk/portal/en/theses/nonphysical-finite-element-method-for-modelling-of-material-discontinuities(62b803fa-fb34-425e-8a77-a77822a078ab).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.626968

Chicago Manual of Style (16^th Edition):

Darvizeh, Roohoolamin. “Non-physical finite element method for modelling of material discontinuities.” 2014. Doctoral Dissertation, University of Manchester. Accessed December 14, 2019. https://www.research.manchester.ac.uk/portal/en/theses/nonphysical-finite-element-method-for-modelling-of-material-discontinuities(62b803fa-fb34-425e-8a77-a77822a078ab).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.626968.

MLA Handbook (7^th Edition):

Darvizeh, Roohoolamin. “Non-physical finite element method for modelling of material discontinuities.” 2014. Web. 14 Dec 2019.

Vancouver:

Darvizeh R. Non-physical finite element method for modelling of material discontinuities. [Internet] [Doctoral dissertation]. University of Manchester; 2014. [cited 2019 Dec 14]. Available from: https://www.research.manchester.ac.uk/portal/en/theses/nonphysical-finite-element-method-for-modelling-of-material-discontinuities(62b803fa-fb34-425e-8a77-a77822a078ab).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.626968.

Council of Science Editors:

Darvizeh R. Non-physical finite element method for modelling of material discontinuities. [Doctoral Dissertation]. University of Manchester; 2014. Available from: https://www.research.manchester.ac.uk/portal/en/theses/nonphysical-finite-element-method-for-modelling-of-material-discontinuities(62b803fa-fb34-425e-8a77-a77822a078ab).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.626968

11. Lightfoot, Shelley. Development of a Finite Element Model for the Study of Tendon Repair Techniques.

Degree: 2012, University of Manchester

URL: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:183174

► Over 30,000 people suffer tendon injury in the UK per annum and over two thirds of these are hand tendon injuries. Hand tendon lacerations are… (more)

▼ Over 30,000 people suffer tendon injury in the UK per annum and over two thirds of these are hand tendon injuries. Hand tendon lacerations are notoriously difficult to treat and 25% of patients achieve an unsatisfactory clinical outcome as assessed by the clinician. Tendons are commonly repaired using suture, with many different suture configurations described in the literature for tendon repair. Despite many in vivo clinical studies and ex vivo tensile tests, many different repair techniques are employed in the clinical setting, demonstrating that there is not currently a best practice method of repairing ruptured tendons. Direct comparison between all repair methods, along with detailed observations of localised high stress and deformation would be valuable in determining a best practice repair method. This information can be obtained by the use of finite element analysis. The aim of this work was to produce a finite element model of suture repaired tendon suitable for comparing different suturing methods. This work has also focussed on describing the mechanical characteristics of tendon tissue for use in the suture repair finite element model. Whilst the longitudinal Young’s modulus of tendon is well documented, the transverse tendon properties have received little attention. Porcine tendon samples were tested in tension transverse to the fibril direction. Stress and strain were observed during tensile testing to determine the transverse Young’s modulus. From the transverse Young’s modulus, the Young’s modulus of tendon interfibrillar material was deduced. This informed a micro-scale finite element model of tendon tissue. In constructing the micro-scale model, the fibrils and inter-fibrillar material were likened to a continuous fibre reinforced composite material and a simplified model of tendon microstructure was produced. Homogenisation was performed on the micro-scale model to obtain a homogeneous material description which represented tendon microstructure’s mechanical behaviour. Finally, this homogeneous material description was used to describe tendon in the macro-scale finite element model of a suture repaired tendon. Force was applied to the suture repair finite element model, and model deformation was compared with deformation observed in sutured ex vivo porcine tendon samples.Tensile testing results yielded that the transverse Young’s modulus of tendon ranges from 0.1035 ±0.0454 MPa to 0.2551 ±0.0818 MPa. The Young’s modulus of the interfibrillar material was found to range from 0.0416 MPa to 0.1021 MPa. Deformation of the suture repair model correlated poorly with ex vivo laboratory results when using the mechanical properties obtained from the micro-scale model to describe tendon behaviour. The microstructure model considers tendon fibrils and surrounding tissue as a fibre reinforced composite material. Our results suggest that a more complex representation of tendon microstructure is required to sufficiently define tendon mechanical properties for use in a suture repair model. The description of… Advisors/Committee Members: WONG, JASON JKF, Wong, Jason, Cartmell, Sarah.

Subjects/Keywords: tendon; finite element

…suture repaired tendon, and the laboratory testing of porcine tendon 3.17 66 Finite element… …model representing tendon microstructure, showing fibrils and Matrix 67 3.18 Finite element… …samples 78 4.8 Finite element models of tendon simulating preparation method C, and tendon… …application 86 8 5.3 Finite element model of simplified tendon repair before and after load… …prepared by method J 5.6 88 Finite element and laboratory results from tensile testing the…

10 more images…

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Lightfoot, S. (2012). Development of a Finite Element Model for the Study of Tendon Repair Techniques. (Doctoral Dissertation). University of Manchester. Retrieved from http://www.manchester.ac.uk/escholar/uk-ac-man-scw:183174

Chicago Manual of Style (16^th Edition):

Lightfoot, Shelley. “Development of a Finite Element Model for the Study of Tendon Repair Techniques.” 2012. Doctoral Dissertation, University of Manchester. Accessed December 14, 2019. http://www.manchester.ac.uk/escholar/uk-ac-man-scw:183174.

MLA Handbook (7^th Edition):

Lightfoot, Shelley. “Development of a Finite Element Model for the Study of Tendon Repair Techniques.” 2012. Web. 14 Dec 2019.

Vancouver:

Lightfoot S. Development of a Finite Element Model for the Study of Tendon Repair Techniques. [Internet] [Doctoral dissertation]. University of Manchester; 2012. [cited 2019 Dec 14]. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:183174.

Council of Science Editors:

Lightfoot S. Development of a Finite Element Model for the Study of Tendon Repair Techniques. [Doctoral Dissertation]. University of Manchester; 2012. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:183174

University of Manchester

12. Rolph, James Russell. Residual Stress Characterisation in Forgings for Aero-Engine Application.

Degree: 2013, University of Manchester

URL: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:190778

► Residual stresses are the stresses which are present within a component without any external load. They can be introduced through any number of manufacturing processes… (more)

▼ Residual stresses are the stresses which are present within a component without any external load. They can be introduced through any number of manufacturing processes and in-service conditions, meaning that they are almost ubiquitous in engineering components. The characterisation of residual stress is an important field of research particularly in an engineering context since the effects of residual stress sum with the loads. As a result, the performance of a component can be greatly enhanced, or significantly reduced, by the presence of residual stress depending on the sign of the stress and the applied load.In this EngD thesis the focus has been on the development of residual stress through the manufacturing processes of aero-engine forgings, specifically the turbine disc. The forgings studied were sub-scale geometries of the disc, forged from the nickel-base superalloy RR1000. The overall aim of this work is to improve the understanding of the residual stress generation and relaxation through implementation of advanced experimental characterisation techniques, with a view to improving current stress predicting process modelling capabilities. With this in mind the work has focussed on the use of neutron diffraction and the contour method to characterise residual stress experimentally, while residual stress predictions have been made using finite element modelling.The findings of this research indicated that very large residual stresses were generated as a result of the quenching process, and that these stresses were then relaxed and redistributed by ageing heat treatments and material removal by machining. The results obtained through the two experimental techniques exhibited very strong agreement, indicated a robust experimental process. Comparisons to the finite element predictions highlighted some issues with the current model; in particular it was found that the simulation of quenching could be improved by better definition of the heat transfer at the surface. Furthermore, the level of stress relaxation during ageing was consistently over predicted in the model. This result is thought to be the result of an over-prediction of the level primary creep in the alloy. Subsequent studies will investigate this behaviour further using the newly developed in-situ heat treatment capabilities which have developed as part of this research. Advisors/Committee Members: Preuss, Michael.

Subjects/Keywords: Residual Stress; Nickel Superalloy; Neutron Diffraction; Contour Method; Finite Element

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Rolph, J. R. (2013). Residual Stress Characterisation in Forgings for Aero-Engine Application. (Doctoral Dissertation). University of Manchester. Retrieved from http://www.manchester.ac.uk/escholar/uk-ac-man-scw:190778

Chicago Manual of Style (16^th Edition):

Rolph, James Russell. “Residual Stress Characterisation in Forgings for Aero-Engine Application.” 2013. Doctoral Dissertation, University of Manchester. Accessed December 14, 2019. http://www.manchester.ac.uk/escholar/uk-ac-man-scw:190778.

MLA Handbook (7^th Edition):

Rolph, James Russell. “Residual Stress Characterisation in Forgings for Aero-Engine Application.” 2013. Web. 14 Dec 2019.

Vancouver:

Rolph JR. Residual Stress Characterisation in Forgings for Aero-Engine Application. [Internet] [Doctoral dissertation]. University of Manchester; 2013. [cited 2019 Dec 14]. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:190778.

Council of Science Editors:

Rolph JR. Residual Stress Characterisation in Forgings for Aero-Engine Application. [Doctoral Dissertation]. University of Manchester; 2013. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:190778

University of Manchester

13. Falkingham, Peter Lewis. Computer simulation of dinosaur tracks.

Degree: 2010, University of Manchester

URL: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:90545

► Fossil tracks represent the only direct record of behaviour and locomotion of extinct animals. A computer model using finite element analysis (FEA) has been developed… (more)

▼ Fossil tracks represent the only direct record of behaviour and locomotion of extinct animals. A computer model using finite element analysis (FEA) has been developed to simulate vertebrate track formation in cohesive substrates. This model has been designed for, and successfully run on, high performance computing (HPC) resources. A number of individual studies were carried out using the computer model to simulate both abstract indenters and virtual dinosaur autopodia. In addition to the simulation studies, two fossil tracks were described, including the first report of bird tracks at the Mammoth Site of Hot Springs, South Dakota (USA) and a re-description of a ‘dinosaur tail drag’ as the trace of a crocodilian. Using the computer model, it has been shown that in a wet, soft mud the indentation of a non-webbed virtual tridactyl foot created a resultant track with features analogous to ‘webbing’ between digits. This ‘webbing’ was a function of sediment deformation and subsequent failure in 3D, specific to rheology. Apparent webbing impressions were clearly developed only within a limited range of sediment conditions and pedal geometry. Indenter (pedal) geometry and morphology affect track depth independently of substrate and loading parameters. More complex morphologies interact with the cohesive substrate creating a lower effective load than that applied. In non-cohesive substrates such as sand, this effect is reversed, and it is the more compact morphologies that indent to a lesser degree. Virtual sauropod tracks were modelled, based on published soft tissue reconstructions of autopodia anatomy, and published mass/centre of mass estimates. It was shown that foot morphology and differential loading between fore- and hind- limbs leads to a range of substrates in which only the manus or pes are able to generate tracks. This offers a new mechanism for the formation of manus-only sauropod trackways, previously interpreted as having been made by swimming dinosaurs. A series of tracks were simulated using input data (loads, pedal morphologies) from four different dinosaurs (Brachiosaurus, Tyrannosaurus, Struthiomimus, and Edmontosaurus). The cohesive substrates used displayed a ‘Goldilocks’ effect, allowing the formation for tracks only for a very limited range of loads for any given foot. In addition, there was a strong bias toward larger animals, both in homogeneous and theoretically heterogeneous substrates. These findings imply that interpretations from track assemblages must consider that only a small proportion of the total fauna present may be recorded as a track assemblage due to substrate properties. The use of FEA to simulate dinosaur track formation has been shown to be successful, and offers a number of advantages over physical modelling including; consistency between experiments, specific control over input variables, rapid undertaking of repeatable experiments, and the ability to view subsurface deformation non-destructively. It is hoped that this work will lead to an increased interest in modelling tracks,… Advisors/Committee Members: MARGETTS, LEE L, Manning, Phillip, Margetts, Lee.

Subjects/Keywords: Dinosaur; footprint; Soil mechanics; Finite Element Analysis (FEA)

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Falkingham, P. L. (2010). Computer simulation of dinosaur tracks. (Doctoral Dissertation). University of Manchester. Retrieved from http://www.manchester.ac.uk/escholar/uk-ac-man-scw:90545

Chicago Manual of Style (16^th Edition):

Falkingham, Peter Lewis. “Computer simulation of dinosaur tracks.” 2010. Doctoral Dissertation, University of Manchester. Accessed December 14, 2019. http://www.manchester.ac.uk/escholar/uk-ac-man-scw:90545.

MLA Handbook (7^th Edition):

Falkingham, Peter Lewis. “Computer simulation of dinosaur tracks.” 2010. Web. 14 Dec 2019.

Vancouver:

Falkingham PL. Computer simulation of dinosaur tracks. [Internet] [Doctoral dissertation]. University of Manchester; 2010. [cited 2019 Dec 14]. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:90545.

Council of Science Editors:

Falkingham PL. Computer simulation of dinosaur tracks. [Doctoral Dissertation]. University of Manchester; 2010. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:90545

University of Manchester

14. Phusakulkajorn, Wassamon. Finite element based solutions of thin-shell problems with a small strain.

Degree: 2013, University of Manchester

URL: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:214057

► In this thesis, we consider the deformation of shell structures defined as thin three-dimensional elastic bodies. These can be modelled using a lower-dimensional theory but… (more)

Subjects/Keywords: Finite Element Method; Linear Elasticity; Small Strain; Thin Shell Theory

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Phusakulkajorn, W. (2013). Finite element based solutions of thin-shell problems with a small strain. (Doctoral Dissertation). University of Manchester. Retrieved from http://www.manchester.ac.uk/escholar/uk-ac-man-scw:214057

Chicago Manual of Style (16^th Edition):

Phusakulkajorn, Wassamon. “Finite element based solutions of thin-shell problems with a small strain.” 2013. Doctoral Dissertation, University of Manchester. Accessed December 14, 2019. http://www.manchester.ac.uk/escholar/uk-ac-man-scw:214057.

MLA Handbook (7^th Edition):

Phusakulkajorn, Wassamon. “Finite element based solutions of thin-shell problems with a small strain.” 2013. Web. 14 Dec 2019.

Vancouver:

Phusakulkajorn W. Finite element based solutions of thin-shell problems with a small strain. [Internet] [Doctoral dissertation]. University of Manchester; 2013. [cited 2019 Dec 14]. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:214057.

Council of Science Editors:

Phusakulkajorn W. Finite element based solutions of thin-shell problems with a small strain. [Doctoral Dissertation]. University of Manchester; 2013. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:214057

University of Manchester

15. Chavez Arreola, Arturo. Mechanical analysis of a virtual Ganz periacetabular osteotomy in patients suffering hip malformations by using finite element analysis.

Degree: 2016, University of Manchester

URL: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:301131

► Developmental dysplasia of the hip (DDH) refers to some hip disorders, from mildly dysplastic to hip joint dislocation. The main feature of DDH is the… (more)

▼ Developmental dysplasia of the hip (DDH) refers to some hip disorders, from mildly dysplastic to hip joint dislocation. The main feature of DDH is the deficient acetabular coverage, which is related to a small contact area in the hip joint, and causes an increase in contact pressure. Ganz periacetabular osteotomy (PAO) is a surgical procedure to correct acetabular orientation in DDH. It changes the position of the acetabulum to increase the femoral head coverage and distribute the contact pressure over the cartilage surface. The procedure of Ganz PAO is technically demanding and its success depends significantly on the surgeon’s experience.The aim of this research is to investigate whether it is possible to optimize the position of the acetabular fragment in patients suffering DDH before a Ganz PAO by using finite element (FE) analysis. Using computed tomography (CT) data from patients with DDH, five three-dimensional (3D) hip models were developed. A virtual Ganz PAO was then performed on the hip models. FE analyses were carried out on the hip models before and after virtual Ganz PAO. Contact area, contact pressure and Von Mises stress in the hip cartilage were checked and analysed in order to find an optimal acetabular position.The first virtual surgery performed was only to rotate the acetabular fragment in the lateral direction to improve the acetabular coverage. Analyses were conducted under loading conditions associated with four commonly daily activities: one leg stance, normal walking, descending stairs and knee bend. Second virtual surgery performed was to rotate the fragment in both the lateral and anterior directions and FE analysis conducted for one leg stance loading condition.Contact area, contact pressure and Von Mises stress in the cartilage all varied according to the change of the acetabular fragment position through virtual Ganz PAO. The optimal lateral position of the acetabular fragment occurs close to the inferior border of its normal range. Large anterior position of the acetabular fragment results in large contact area, low contact pressure and Von Mises stress. However, an overcorrection of the acetabular fragment, especially in the anterior correction, leads to problems in performing normal hip movements. The optimal anterior position of the acetabular fragment is therefore close to the superior limit of the normal range.In conclusion, the present analysis shows that an optimal position of the acetabular fragment for patients suffering DDH which improves the acetabular femoral head coverage in the normal range, maximizes the contact area and minimizes the contact pressure and Von Mises stress can be established using 3D models and FE analysis. This information will be useful to the surgeons for the planning of PAO. Advisors/Committee Members: ALONSO RASGADO, TERESA TM, Alonso Rasgado, Teresa, Zou, Zhenmin.

Subjects/Keywords: Developmental dysplasia of the hip; Ganz periacetabular osteotomy; Finite element analysis

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Chavez Arreola, A. (2016). Mechanical analysis of a virtual Ganz periacetabular osteotomy in patients suffering hip malformations by using finite element analysis. (Doctoral Dissertation). University of Manchester. Retrieved from http://www.manchester.ac.uk/escholar/uk-ac-man-scw:301131

Chicago Manual of Style (16^th Edition):

Chavez Arreola, Arturo. “Mechanical analysis of a virtual Ganz periacetabular osteotomy in patients suffering hip malformations by using finite element analysis.” 2016. Doctoral Dissertation, University of Manchester. Accessed December 14, 2019. http://www.manchester.ac.uk/escholar/uk-ac-man-scw:301131.

MLA Handbook (7^th Edition):

Chavez Arreola, Arturo. “Mechanical analysis of a virtual Ganz periacetabular osteotomy in patients suffering hip malformations by using finite element analysis.” 2016. Web. 14 Dec 2019.

Vancouver:

Chavez Arreola A. Mechanical analysis of a virtual Ganz periacetabular osteotomy in patients suffering hip malformations by using finite element analysis. [Internet] [Doctoral dissertation]. University of Manchester; 2016. [cited 2019 Dec 14]. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:301131.

Council of Science Editors:

Chavez Arreola A. Mechanical analysis of a virtual Ganz periacetabular osteotomy in patients suffering hip malformations by using finite element analysis. [Doctoral Dissertation]. University of Manchester; 2016. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:301131

University of Manchester

16. Mustansar, Zartasha. Selection of Modelling Level of Detail for Incorporating Stress Analysis into Evolutionary Robotics Simulations of Extinct and Extant Vertebrates.

Degree: 2015, University of Manchester

URL: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:269243

►

This thesis concerns the simulation of locomotion in vertebrates. The state-of-theartuses genetic algorithms together with solid body kinematics to generate possiblesolutions for stable gaits. In… (more)

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This thesis concerns the simulation of locomotion in vertebrates. The state-of-theartuses genetic algorithms together with solid body kinematics to generate possiblesolutions for stable gaits. In recent work, this methodology led to a hopping gait in adinosaur and the researchers wondered if this was realistic. The purpose of theresearch carried out in this thesis was to examine whether quick and simple finiteelement analyses could be added to the simulator, to evaluate a simple ―break or―not break failure criterion. A break would rule out gaits that might damage theowner‘s skeleton. Linear elastic analysis was considered as a possible approach as itwould add little overhead to the simulations.The author used X-ray computed tomography and the finite element method toexamine the axial loading of a barnacle goose femur. The study considered fourlevels of detail for a linear elastic simulation, finding that all the analyses carried outoverestimated the strength of the bone, when considering safety factors. Theconclusion is that to incorporate stress-strain analysis into the gait simulationrequires more realistic models of bone behaviour that incorporate the nonlinearresponse of bone to applied loading. A new study focusing on the use of noveltechniques such as model order reduction is recommended for future work.The outputs of this research include chapters written up as journal papers covering a4D tomography experiment; a level of detail study; an analysis of a purported tendonavulsion injury in Tyrannosaurus rex and a review of the elastic properties of bone.

This thesis concerns the simulation of locomotion in vertebrates. The state-of-theartuses genetic algorithms together with solid body kinematics to generate possiblesolutions for stable gaits. In recent work, this methodology led to a hopping gait in adinosaur and the researchers wondered if this was realistic. The purpose of theresearch carried out in this thesis was to examine whether quick and simple finiteelement analyses could be added to the simulator, to evaluate a simple ―break or―not break failure criterion. A break would rule out gaits that might damage theowner‘s skeleton. Linear elastic analysis was considered as a possible approach as itwould add little overhead to the simulations.The author used X-ray computed tomography and the finite element method toexamine the axial loading of a barnacle goose femur. The study considered fourlevels of detail for a linear elastic simulation, finding that all the analyses carried outoverestimated the strength of the bone, when considering safety factors. Theconclusion is that to incorporate stress-strain analysis into the gait simulationrequires more realistic models of bone behaviour that incorporate the nonlinearresponse of bone to applied loading. A new study focusing on the use of noveltechniques such as model order reduction is recommended for future work.The outputs of this research include chapters written up as journal papers covering a4D tomography experiment; a level of detail study; an analysis of a…

Advisors/Committee Members: MANNING, PHILLIP PL, Margetts, Lee, Manning, Phillip.

Subjects/Keywords: Finite Element Analysis, Branta leucopsis, Computed tomography,; simulation, strain

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Mustansar, Z. (2015). Selection of Modelling Level of Detail for Incorporating Stress Analysis into Evolutionary Robotics Simulations of Extinct and Extant Vertebrates. (Doctoral Dissertation). University of Manchester. Retrieved from http://www.manchester.ac.uk/escholar/uk-ac-man-scw:269243

Chicago Manual of Style (16^th Edition):

Mustansar, Zartasha. “Selection of Modelling Level of Detail for Incorporating Stress Analysis into Evolutionary Robotics Simulations of Extinct and Extant Vertebrates.” 2015. Doctoral Dissertation, University of Manchester. Accessed December 14, 2019. http://www.manchester.ac.uk/escholar/uk-ac-man-scw:269243.

MLA Handbook (7^th Edition):

Mustansar, Zartasha. “Selection of Modelling Level of Detail for Incorporating Stress Analysis into Evolutionary Robotics Simulations of Extinct and Extant Vertebrates.” 2015. Web. 14 Dec 2019.

Vancouver:

Mustansar Z. Selection of Modelling Level of Detail for Incorporating Stress Analysis into Evolutionary Robotics Simulations of Extinct and Extant Vertebrates. [Internet] [Doctoral dissertation]. University of Manchester; 2015. [cited 2019 Dec 14]. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:269243.

Council of Science Editors:

Mustansar Z. Selection of Modelling Level of Detail for Incorporating Stress Analysis into Evolutionary Robotics Simulations of Extinct and Extant Vertebrates. [Doctoral Dissertation]. University of Manchester; 2015. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:269243

University of Manchester

17. Rolph, James. Residual stress characterisation in forgings for aero-engine application.

Degree: Thesis (Eng.D.), 2013, University of Manchester

URL: https://www.research.manchester.ac.uk/portal/en/theses/residual-stress-characterisation-in-forgings-for-aeroengine-application(f0963136-4919-48f9-91fe-34a752ff4666).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.740245

► Residual stresses are the stresses which are present within a component without any external load. They can be introduced through any number of manufacturing processes… (more)

▼ Residual stresses are the stresses which are present within a component without any external load. They can be introduced through any number of manufacturing processes and in-service conditions, meaning that they are almost ubiquitous in engineering components. The characterisation of residual stress is an important field of research particularly in an engineering context since the effects of residual stress sum with the loads. As a result, the performance of a component can be greatly enhanced, or significantly reduced, by the presence of residual stress depending on the sign of the stress and the applied load. In this EngD thesis the focus has been on the development of residual stress through the manufacturing processes of aero-engine forgings, specifically the turbine disc. The forgings studied were sub-scale geometries of the disc, forged from the nickel-base superalloy RR1000. The overall aim of this work is to improve the understanding of the residual stress generation and relaxation through implementation of advanced experimental characterisation techniques, with a view to improving current stress predicting process modelling capabilities. With this in mind the work has focussed on the use of neutron diffraction and the contour method to characterise residual stress experimentally, while residual stress predictions have been made using finite element modelling. The findings of this research indicated that very large residual stresses were generated as a result of the quenching process, and that these stresses were then relaxed and redistributed by ageing heat treatments and material removal by machining. The results obtained through the two experimental techniques exhibited very strong agreement, indicated a robust experimental process. Comparisons to the finite element predictions highlighted some issues with the current model; in particular it was found that the simulation of quenching could be improved by better definition of the heat transfer at the surface. Furthermore, the level of stress relaxation during ageing was consistently over predicted in the model. This result is thought to be the result of an over-prediction of the level primary creep in the alloy. Subsequent studies will investigate this behaviour further using the newly developed in-situ heat treatment capabilities which have developed as part of this research.

Subjects/Keywords: 620; Contour Method; Neutron Diffraction; Finite Element; Residual Stress; Nickel Superalloy

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Rolph, J. (2013). Residual stress characterisation in forgings for aero-engine application. (Doctoral Dissertation). University of Manchester. Retrieved from https://www.research.manchester.ac.uk/portal/en/theses/residual-stress-characterisation-in-forgings-for-aeroengine-application(f0963136-4919-48f9-91fe-34a752ff4666).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.740245

Chicago Manual of Style (16^th Edition):

Rolph, James. “Residual stress characterisation in forgings for aero-engine application.” 2013. Doctoral Dissertation, University of Manchester. Accessed December 14, 2019. https://www.research.manchester.ac.uk/portal/en/theses/residual-stress-characterisation-in-forgings-for-aeroengine-application(f0963136-4919-48f9-91fe-34a752ff4666).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.740245.

MLA Handbook (7^th Edition):

Rolph, James. “Residual stress characterisation in forgings for aero-engine application.” 2013. Web. 14 Dec 2019.

Vancouver:

Rolph J. Residual stress characterisation in forgings for aero-engine application. [Internet] [Doctoral dissertation]. University of Manchester; 2013. [cited 2019 Dec 14]. Available from: https://www.research.manchester.ac.uk/portal/en/theses/residual-stress-characterisation-in-forgings-for-aeroengine-application(f0963136-4919-48f9-91fe-34a752ff4666).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.740245.

Council of Science Editors:

Rolph J. Residual stress characterisation in forgings for aero-engine application. [Doctoral Dissertation]. University of Manchester; 2013. Available from: https://www.research.manchester.ac.uk/portal/en/theses/residual-stress-characterisation-in-forgings-for-aeroengine-application(f0963136-4919-48f9-91fe-34a752ff4666).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.740245

University of Manchester

18. Ju, Xiaozhu. A discontinuous transport methodology for solidification modelling.

Degree: PhD, 2015, University of Manchester

URL: https://www.research.manchester.ac.uk/portal/en/theses/a-discontinuous-transport-methodology-for-solidification-modelling(32f86a90-05f6-45a1-938f-357e93398d39).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.647421

► Phase change in solidification and melting can be described with the aid of discontinuous functions. The aim of this project is to establish effective methodologies… (more)

▼ Phase change in solidification and melting can be described with the aid of discontinuous functions. The aim of this project is to establish effective methodologies for the solution of discontinuous phase-change problems. The classic capacitance method, which distributes the effect of any discontinuity present over a finite region (typically an element), can suffer from inaccurate energy transport. Improvement is possible with the application of the classic non-physical enthalpy method. However, this approach is known to suffer with the imposition of material velocity, which gives rise to negative thermal capacitance providing a source of error and instability. In order to improve on the performance of the capacitance method and the classic non-physical enthalpy method, this research introduces a series of new non-physical variables. Firstly, a new non-physical enthalpy is defined via the weak form of the energy transport equation. The classical non-physical enthalpy was defined using a temporal integral term. In the new definition, the non-physical enthalpy involves both a temporal and an advection term, which is shown to avoid the generation of negative capacitance and improve the stability of advection heat transfer in numerical methods. Secondly, control volume analysis is performed on weighted and unweighted forms of the governing energy equation involving non-physical enthalpy. The analysis is shown to reveal non-physical source terms that facilitate the removal of phase-change discontinuities. Thirdly, it is demonstrated in the thesis how a non-physical heat source must be introduced into the governing non-physical transport equation to remove discontinuities arising from non-physical terms related to advection. To demonstrate the accuracy and stability of the new method, it is implemented in the finite element method for both one-dimensional linear rod elements and two dimensional triangular elements. Update techniques and root finding methods, such as the predictor-corrector method, the secant method and the homotopy method, are applied to solve the non-linear system of equations, which are constructed with the new theory. Results returned from the one-dimensional numerical experiments are compared with exact solutions, which show reasonable accuracy. Numerical experiments for isothermal solidification with advection-diffusion in both one and two dimensions demonstrate the feasibility of the new methodology.

Subjects/Keywords: 530.4; solidification; finite element method; discontinuity; phase change problem

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Ju, X. (2015). A discontinuous transport methodology for solidification modelling. (Doctoral Dissertation). University of Manchester. Retrieved from https://www.research.manchester.ac.uk/portal/en/theses/a-discontinuous-transport-methodology-for-solidification-modelling(32f86a90-05f6-45a1-938f-357e93398d39).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.647421

Chicago Manual of Style (16^th Edition):

Ju, Xiaozhu. “A discontinuous transport methodology for solidification modelling.” 2015. Doctoral Dissertation, University of Manchester. Accessed December 14, 2019. https://www.research.manchester.ac.uk/portal/en/theses/a-discontinuous-transport-methodology-for-solidification-modelling(32f86a90-05f6-45a1-938f-357e93398d39).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.647421.

MLA Handbook (7^th Edition):

Ju, Xiaozhu. “A discontinuous transport methodology for solidification modelling.” 2015. Web. 14 Dec 2019.

Vancouver:

Ju X. A discontinuous transport methodology for solidification modelling. [Internet] [Doctoral dissertation]. University of Manchester; 2015. [cited 2019 Dec 14]. Available from: https://www.research.manchester.ac.uk/portal/en/theses/a-discontinuous-transport-methodology-for-solidification-modelling(32f86a90-05f6-45a1-938f-357e93398d39).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.647421.

Council of Science Editors:

Ju X. A discontinuous transport methodology for solidification modelling. [Doctoral Dissertation]. University of Manchester; 2015. Available from: https://www.research.manchester.ac.uk/portal/en/theses/a-discontinuous-transport-methodology-for-solidification-modelling(32f86a90-05f6-45a1-938f-357e93398d39).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.647421

University of Manchester

19. Fletcher, Adam. Non-destructive testing of the graphite core within an advanced gas-cooled reactor.

Degree: Thesis (Eng.D.), 2014, University of Manchester

URL: https://www.research.manchester.ac.uk/portal/en/theses/nondestructive-testing-of-the-graphite-core-within-an-advanced-gascooled-reactor(3ca5c904-6860-46b8-8538-4136cb2aedcd).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.634878

► The aim of this work has been to apply the techniques of non-destructive testing and evaluation to the graphite fuel channel bricks which form the… (more)

▼ The aim of this work has been to apply the techniques of non-destructive testing and evaluation to the graphite fuel channel bricks which form the core of an Advanced Gas-Cooled reactor. Two modes of graphite degradation have been studied: subsurface cracks originating from the keyway corners of the bricks and the reduction in material density caused by radiolytic oxidation. This work has focused on electromagnetic inspection techniques. Brick cracking has been studied using a multi-frequency eddy current technique with the aim of determining quantitative information. In order to accurately control the crack dimensions this work has used radially machined slots as an analogue. Two sensor geometries were studied and it was determined that slots of at least 10 mm through-wall extent could be located. A novel, empirical method of determining the slot size is presented using a brick machined with a series of reference slots. Machined slots originating from a keyway could be sized to within 2 mm using this method. A parametric 3D finite element study was also carried out on this problem. These simulations could distinguish the location of the slots and had some sensitivity to their size, however, the model was found to be overly sensitive to the specific mesh used. Two new contributions to the inverse problem are presented. The first is a minor extension to the usual adjoint problem in which one system now contains a gradiometer. The second is a proposed solution to the ambiguous nature of the inner product required by the sensitivity formulation. This solution has been validated with finite element modelling. Density reduction has been studied via its relationship with electrical conductivity using a technique based on impedance spectroscopy. An inverse eddy current problem has been solved using the regularised Gauss-Newton method to determine the conductivity of the brick over its cross section. The associated forward problem has been solved using the finite element method on a simplified geometry. Tikhonov regularisation has been employed to overcome the ill-posed nature of the inverse problem. This method has been applied to a range of sample and sensor geometries and found to produce excellent results from laboratory data provided the finite element model is well calibrated. Bore or surface conductivity values can be reproduced to better than 1% with the accuracy reducing with distance from the sensor. The sensitivity of the algorithm to the regularisation parameter has been studied using the L-curve method and the effect of two regularisation operators has also been examined. A new method of choosing the regularisation parameter a priori is proposed and tested. Data taken during reactor outages produces physically realistic profiles although the results appear off-set from electrical resistivity values measured using the four-point method. The focus of future work should be to remove this effect which will likely require improvements to the forward model.

Subjects/Keywords: 621.382; nuclear; graphite; electromagnetic; ndt; finite element; modelling; eddy current

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Fletcher, A. (2014). Non-destructive testing of the graphite core within an advanced gas-cooled reactor. (Doctoral Dissertation). University of Manchester. Retrieved from https://www.research.manchester.ac.uk/portal/en/theses/nondestructive-testing-of-the-graphite-core-within-an-advanced-gascooled-reactor(3ca5c904-6860-46b8-8538-4136cb2aedcd).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.634878

Chicago Manual of Style (16^th Edition):

Fletcher, Adam. “Non-destructive testing of the graphite core within an advanced gas-cooled reactor.” 2014. Doctoral Dissertation, University of Manchester. Accessed December 14, 2019. https://www.research.manchester.ac.uk/portal/en/theses/nondestructive-testing-of-the-graphite-core-within-an-advanced-gascooled-reactor(3ca5c904-6860-46b8-8538-4136cb2aedcd).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.634878.

MLA Handbook (7^th Edition):

Fletcher, Adam. “Non-destructive testing of the graphite core within an advanced gas-cooled reactor.” 2014. Web. 14 Dec 2019.

Vancouver:

Fletcher A. Non-destructive testing of the graphite core within an advanced gas-cooled reactor. [Internet] [Doctoral dissertation]. University of Manchester; 2014. [cited 2019 Dec 14]. Available from: https://www.research.manchester.ac.uk/portal/en/theses/nondestructive-testing-of-the-graphite-core-within-an-advanced-gascooled-reactor(3ca5c904-6860-46b8-8538-4136cb2aedcd).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.634878.

Council of Science Editors:

Fletcher A. Non-destructive testing of the graphite core within an advanced gas-cooled reactor. [Doctoral Dissertation]. University of Manchester; 2014. Available from: https://www.research.manchester.ac.uk/portal/en/theses/nondestructive-testing-of-the-graphite-core-within-an-advanced-gascooled-reactor(3ca5c904-6860-46b8-8538-4136cb2aedcd).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.634878

University of Manchester

20. Mustansar, Zartasha. Selection of modelling level of detail for incorporating stress analysis into evolutionary robotics simulations of extinct and extant vertebrates.

Degree: PhD, 2015, University of Manchester

URL: https://www.research.manchester.ac.uk/portal/en/theses/selection-of-modelling-level-of-detail-for-incorporating-stress-analysis-into-evolutionary-robotics-simulations-of-extinct-and-extant-vertebrates(1210393b-d7e7-40dd-91d8-c33598aca8dc).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.692599

► This thesis concerns the simulation of locomotion in vertebrates. The state-of-the-art uses genetic algorithms together with solid body kinematics to generate possible solutions for stable… (more)

Subjects/Keywords: 596; Finite Element Analysis; Branta leucopsis; Computed tomography; simulation; strain

Record Details Similar Records Cite « Share

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Mustansar, Z. (2015). Selection of modelling level of detail for incorporating stress analysis into evolutionary robotics simulations of extinct and extant vertebrates. (Doctoral Dissertation). University of Manchester. Retrieved from https://www.research.manchester.ac.uk/portal/en/theses/selection-of-modelling-level-of-detail-for-incorporating-stress-analysis-into-evolutionary-robotics-simulations-of-extinct-and-extant-vertebrates(1210393b-d7e7-40dd-91d8-c33598aca8dc).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.692599

Chicago Manual of Style (16^th Edition):

Mustansar, Zartasha. “Selection of modelling level of detail for incorporating stress analysis into evolutionary robotics simulations of extinct and extant vertebrates.” 2015. Doctoral Dissertation, University of Manchester. Accessed December 14, 2019. https://www.research.manchester.ac.uk/portal/en/theses/selection-of-modelling-level-of-detail-for-incorporating-stress-analysis-into-evolutionary-robotics-simulations-of-extinct-and-extant-vertebrates(1210393b-d7e7-40dd-91d8-c33598aca8dc).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.692599.

MLA Handbook (7^th Edition):

Mustansar, Zartasha. “Selection of modelling level of detail for incorporating stress analysis into evolutionary robotics simulations of extinct and extant vertebrates.” 2015. Web. 14 Dec 2019.

Vancouver:

Mustansar Z. Selection of modelling level of detail for incorporating stress analysis into evolutionary robotics simulations of extinct and extant vertebrates. [Internet] [Doctoral dissertation]. University of Manchester; 2015. [cited 2019 Dec 14]. Available from: https://www.research.manchester.ac.uk/portal/en/theses/selection-of-modelling-level-of-detail-for-incorporating-stress-analysis-into-evolutionary-robotics-simulations-of-extinct-and-extant-vertebrates(1210393b-d7e7-40dd-91d8-c33598aca8dc).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.692599.

Council of Science Editors:

Mustansar Z. Selection of modelling level of detail for incorporating stress analysis into evolutionary robotics simulations of extinct and extant vertebrates. [Doctoral Dissertation]. University of Manchester; 2015. Available from: https://www.research.manchester.ac.uk/portal/en/theses/selection-of-modelling-level-of-detail-for-incorporating-stress-analysis-into-evolutionary-robotics-simulations-of-extinct-and-extant-vertebrates(1210393b-d7e7-40dd-91d8-c33598aca8dc).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.692599

University of Manchester

21. Martinez Lozada, Francisco Mauricio. The effects of L4/5 fusion on the adjacent segments in the lumbar spine.

Degree: PhD, 2016, University of Manchester

URL: https://www.research.manchester.ac.uk/portal/en/theses/the-effects-of-l45-fusion-on-the-adjacent-segments-in-the-lumbar-spine(1b88de80-7c39-4646-860d-7312ca21d947).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.684780

► Lumbar intervertebral disc disorder is a spinal condition that affects the normal function of the intervertebral discs mainly due to the natural aging process. This… (more)

▼ Lumbar intervertebral disc disorder is a spinal condition that affects the normal function of the intervertebral discs mainly due to the natural aging process. This condition can manifest itself in pain and limited motion in the legs, amongst others. Posterolateral Fusion (PLF) and Posterior Lumbar Interbody Fusion (PLIF) are two of the most used surgical procedures for treating lumbar intervertebral disc disease. Although these procedures are commonly used and performed successfully the impact in terms of the stresses developed in the posterior implants employed and in the spinal components adjacent to the surgical site has not been exhaustively investigated. In addition, the consequences of the procedure on the reduction of the Range of Motion of the lumbar spine is not clearly understood. The objective of this research is to investigate the effect of one-level spinal fusion of lumbar segment L4-L5 on the stresses and the range of motion at the remaining, adjacent lumbar levels. Four 3 dimensional finite element models of a lumbosacral spine were created from Computer Tomography data (CT scan). The models were used to investigate four surgical scenarios, including the use of 0o and 4o interbody cages, in addition to the un-instrumented spine for flexion, extension, torsion and lateral bending motions. The predictions obtained from the models enabled the mechanical behaviour of the lumbar spine following fusion surgery using 0 o and 4o cages to be investigated and compared. In addition, a clinical study was performed to quantify the reduction in the range of motion for subjects who had undergone L4/5 posterior lumbar interbody fusion surgery. The clinical results were compared to those of subjects who had not undergone surgery and to the range of motion predictions from the computational model. The results from this research demonstrate that the insertion of posterior instrumentation does not have an impact on the spinal structures above the L3/4 intervertebral disc. However, the pedicle screws and the insertion of the interbody cages causes stress levels in the area adjacent to the surgical site to rise which could promote accelerated degeneration of the discs. Additionally, this study demonstrates how the pedicle screws are affected by the surgical spinal fusion techniques. Furthermore, the investigation demonstrates how posterior lumbar interbody fusion causes the range of motion of patients that had undergone this surgery to decrease. The results from the comparison of the behaviour of the use of 0º and 4º interbody cages in L4-5 posterolateral fusion demonstrates that the stress levels in the adjacent vertebrae, intervertebral discs and pedicle screw fixation system increase when 4º are used cages than when 0º cages were employed. The results from the in-vitro study show a decrease in the range of motion of the subjects who had undergone L4/5 posterior lumbar interbody fusion surgery when compared with the subjects with no low back pain history. This indicates that the PLIF surgery combined with the normal disc…

Subjects/Keywords: 617.4; Lumbar Spine; Range of Motion; Finite Element Analysis

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Martinez Lozada, F. M. (2016). The effects of L4/5 fusion on the adjacent segments in the lumbar spine. (Doctoral Dissertation). University of Manchester. Retrieved from https://www.research.manchester.ac.uk/portal/en/theses/the-effects-of-l45-fusion-on-the-adjacent-segments-in-the-lumbar-spine(1b88de80-7c39-4646-860d-7312ca21d947).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.684780

Chicago Manual of Style (16^th Edition):

Martinez Lozada, Francisco Mauricio. “The effects of L4/5 fusion on the adjacent segments in the lumbar spine.” 2016. Doctoral Dissertation, University of Manchester. Accessed December 14, 2019. https://www.research.manchester.ac.uk/portal/en/theses/the-effects-of-l45-fusion-on-the-adjacent-segments-in-the-lumbar-spine(1b88de80-7c39-4646-860d-7312ca21d947).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.684780.

MLA Handbook (7^th Edition):

Martinez Lozada, Francisco Mauricio. “The effects of L4/5 fusion on the adjacent segments in the lumbar spine.” 2016. Web. 14 Dec 2019.

Vancouver:

Martinez Lozada FM. The effects of L4/5 fusion on the adjacent segments in the lumbar spine. [Internet] [Doctoral dissertation]. University of Manchester; 2016. [cited 2019 Dec 14]. Available from: https://www.research.manchester.ac.uk/portal/en/theses/the-effects-of-l45-fusion-on-the-adjacent-segments-in-the-lumbar-spine(1b88de80-7c39-4646-860d-7312ca21d947).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.684780.

Council of Science Editors:

Martinez Lozada FM. The effects of L4/5 fusion on the adjacent segments in the lumbar spine. [Doctoral Dissertation]. University of Manchester; 2016. Available from: https://www.research.manchester.ac.uk/portal/en/theses/the-effects-of-l45-fusion-on-the-adjacent-segments-in-the-lumbar-spine(1b88de80-7c39-4646-860d-7312ca21d947).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.684780

University of Manchester

22. Fatoba, Olusegun Oludare. Experimental and Modelling Studies of Corrosion Fatigue Damage in a Linepipe Steel.

Degree: 2016, University of Manchester

URL: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:294169

► The work is concerned with the development of a multi-stage corrosion fatigue lifetime model, with emphasis on pitting as a precursor to cracking. The model… (more)

▼ The work is concerned with the development of a multi-stage corrosion fatigue lifetime model, with emphasis on pitting as a precursor to cracking. The model is based upon the quantitative evaluation of damage during the overall corrosion fatigue process.The fatigue response of as-received API 5L X65 linepipe steel has been investigated in terms of the evolution of damage during pit development, pit-to-crack transition and crack propagation. Micro-potentiostatic polarisation was conducted to evaluate role of stress on pit development. Crack growth rate measurements were conducted on pre-pitted specimens, which were tested in air and brine, to evaluate the initiation and propagation behaviour of cracks emanating from artificial pits. Finite element analysis was undertaken to evaluate the stress and strain distribution associated with the pits. A cellular automata finite element model was also developed for predicting corrosion fatigue damage.Pit growth rate was enhanced under stress. It was considered that the strain localisation effect of the pit facilitated strain-assisted dissolution. In air, cracks initiated predominantly from the pit mouth. FEA results indicated that this was due to localisation of strain towards the pit mouth. In corrosion fatigue, cracks tended to initiate at the pit base at low stress and at the pit mouth at higher stresses. Crack initiation lifetimes were shorter in the aggressive environment compared to air and the effect of the environment on crack initiation lifetime was lower at higher stress levels. Crack initiation lifetime for double pits generally decreased with decreasing pit-to-pit separation distance.The microstructure was observed to influence crack growth behaviour in air particularly in the early stages when cracks were short. The acceleration and retardation in crack growth were attributed to the resistance of grain boundaries to crack advance. Cracks sometimes arrested at these barriers and became non-propagating. Introduction of the environment for a short period appear to eliminate the resistance of the microstructural barriers thus promoting re-propagation of the previously arrested crack. The continued crack propagation after the removal of the environment suggests that the influence of the environment is more important in the early stages of crack growth. Crack growth rates were higher in the aggressive environment than in air. The degree of environmental enhancement of crack growth was found to be greater at lower stress levels and at short crack lengths. Oxide-induced crack closure and crack coalescence were two mechanisms that also affected crack growth behaviour.2-D cellular automata finite element simulation results, with and without stress, show good agreement agreed with experiments i.e. pit depth and pit aspect ratio increase with time. Results from 3-D cellular automata simulations of pits are also consistent with experiments. Fatigue lifetimes were significantly shorter (i) in the brine environment than in air and (ii) for specimens with double pits compared to… Advisors/Committee Members: JIVKOV, ANDREY AP, Akid, Robert, Jivkov, Andrey.

Subjects/Keywords: Corrosion fatigue; Pitting corrosion; Short crack; Fatigue crack growth; Fatigue limit; Cellular automata; Finite element analysis; Cellular Automata Finite Element modelling; Lifetime modelling; Pit-to-crack transition; Modelling; X65 Steel

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Fatoba, O. O. (2016). Experimental and Modelling Studies of Corrosion Fatigue Damage in a Linepipe Steel. (Doctoral Dissertation). University of Manchester. Retrieved from http://www.manchester.ac.uk/escholar/uk-ac-man-scw:294169

Chicago Manual of Style (16^th Edition):

Fatoba, Olusegun Oludare. “Experimental and Modelling Studies of Corrosion Fatigue Damage in a Linepipe Steel.” 2016. Doctoral Dissertation, University of Manchester. Accessed December 14, 2019. http://www.manchester.ac.uk/escholar/uk-ac-man-scw:294169.

MLA Handbook (7^th Edition):

Fatoba, Olusegun Oludare. “Experimental and Modelling Studies of Corrosion Fatigue Damage in a Linepipe Steel.” 2016. Web. 14 Dec 2019.

Vancouver:

Fatoba OO. Experimental and Modelling Studies of Corrosion Fatigue Damage in a Linepipe Steel. [Internet] [Doctoral dissertation]. University of Manchester; 2016. [cited 2019 Dec 14]. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:294169.

Council of Science Editors:

Fatoba OO. Experimental and Modelling Studies of Corrosion Fatigue Damage in a Linepipe Steel. [Doctoral Dissertation]. University of Manchester; 2016. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:294169

University of Manchester

23. Pringgana, Gede. Improving resilience of coastal structures subject to tsunami-like waves.

Degree: PhD, 2016, University of Manchester

URL: https://www.research.manchester.ac.uk/portal/en/theses/improving-resilience-of-coastal-structures-subject-to-tsunamilike-waves(7fd556e2-0202-48ea-a8bf-39582f9c4c7b).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.701102

► This thesis investigates tsunami impact on shore-based, low-rise structures in coastal areas. The aims are to investigate tsunami wave inundation in built-up coastal areas with… (more)

▼ This thesis investigates tsunami impact on shore-based, low-rise structures in coastal areas. The aims are to investigate tsunami wave inundation in built-up coastal areas with reference to structural response to wave inundation, to assess the performance of current design codes in comparison with validated state-of-the-art numerical models and to improve structural design of residential buildings in tsunami risk areas. Tsunami events over the past few decades have shown that a significant proportion of fatalities can be attributed to the collapse of building infrastructure due to various actions of the incident waves. Although major tsunami events have demonstrated the potential catastrophic effects on built infrastructure, current building codes have no detailed or consistent guidance on designing structures in tsunami-prone regions. Furthermore, considerable differences in existing empirical formulae highlight that new research is necessary to appropriately address the particularities of the tsunami-induced forces and structure response into the design standards. In this thesis, numerical modelling methods are used to simulate hydrodynamic impact on shore-based coastal structures. The hydrodynamic simulations were conducted using a novel meshless numerical method, smoothed particle hydrodynamics (SPH), which is coupled with the finite element (FE) method to model structural behaviour. The SPH method was validated with experimental data for bore impact on an obstacle using a convergence study to identify the optimum particle size to capture the hydrodynamics. The FE model was validated against experimental data for plates under transient blast loads which have similar load characteristics with impulsive tsunami-induced bore impacts. One of the contributions of the thesis is the use of a new coupling method of the SPH-based software DualSPHysics and FE-based software ABAQUS. Using SPH particle spacing of the same size as the FE mesh size, enables the SPH output pressure to be directly applied as an input to the structural response model. Using this approach the effects of arrangement and orientation of single and multiple low rise structures are explored. Test cases were performed in 2-D and 3-D involving a discrete structure and multiple structures. The 3-D SPH simulations with single and multiple structures used an idealised coastal structure in the form of a cube with different on-plan orientations (0°, 30°, 45° and 60°) relative to the oncoming bore direction. The single structure cases were intended to study the improvement of the resilience of coastal structures by reducing the acting pressures on the vertical surfaces by changing the structure’s orientation. It was found the pressure exerted on the vertical surface of structure can be reduced by up to 50% with the 60° orientation case. The multiple structure models were conducted to examine shielding and flow focusing phenomena in tsunami events. The results reveal that the distance between two adjacent front structures can greatly influence the pressure…

Subjects/Keywords: 551.46; tsunami; numerical modelling; smoothed particle hydrodynamics; finite element method; coastal; timber structure; resilience

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Pringgana, G. (2016). Improving resilience of coastal structures subject to tsunami-like waves. (Doctoral Dissertation). University of Manchester. Retrieved from https://www.research.manchester.ac.uk/portal/en/theses/improving-resilience-of-coastal-structures-subject-to-tsunamilike-waves(7fd556e2-0202-48ea-a8bf-39582f9c4c7b).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.701102

Chicago Manual of Style (16^th Edition):

Pringgana, Gede. “Improving resilience of coastal structures subject to tsunami-like waves.” 2016. Doctoral Dissertation, University of Manchester. Accessed December 14, 2019. https://www.research.manchester.ac.uk/portal/en/theses/improving-resilience-of-coastal-structures-subject-to-tsunamilike-waves(7fd556e2-0202-48ea-a8bf-39582f9c4c7b).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.701102.

MLA Handbook (7^th Edition):

Pringgana, Gede. “Improving resilience of coastal structures subject to tsunami-like waves.” 2016. Web. 14 Dec 2019.

Vancouver:

Pringgana G. Improving resilience of coastal structures subject to tsunami-like waves. [Internet] [Doctoral dissertation]. University of Manchester; 2016. [cited 2019 Dec 14]. Available from: https://www.research.manchester.ac.uk/portal/en/theses/improving-resilience-of-coastal-structures-subject-to-tsunamilike-waves(7fd556e2-0202-48ea-a8bf-39582f9c4c7b).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.701102.

Council of Science Editors:

Pringgana G. Improving resilience of coastal structures subject to tsunami-like waves. [Doctoral Dissertation]. University of Manchester; 2016. Available from: https://www.research.manchester.ac.uk/portal/en/theses/improving-resilience-of-coastal-structures-subject-to-tsunamilike-waves(7fd556e2-0202-48ea-a8bf-39582f9c4c7b).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.701102

University of Manchester

24. Asnaashari, Erfan. Vibration-based damage detection in structures.

Degree: PhD, 2014, University of Manchester

URL: https://www.research.manchester.ac.uk/portal/en/theses/vibrationbased-damage-detection-in-structures(09061582-55fb-4fba-846e-2156dd4ef172).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.668545

► Structural health monitoring systems have a great potential for cost saving and safety improvement in different types of structures. One of the most important tasks… (more)

▼ Structural health monitoring systems have a great potential for cost saving and safety improvement in different types of structures. One of the most important tasks of these systems is to identify damage at an early stage of its development. A variety of methods may be used to identify, locate, or quantify the extent of damage or fault in a structural or mechanical component. However, the preferable method is the one which maximises the probability of detecting the flaw, while also considering feasibility of in-situ testing, ease of use and economic factors. Cracks are one of the common defects in structural components that may ultimately lead to failure of structures if not detected. The presence of cracks in a structure brings about local variations in the stiffness of the structure. These variations cause the dynamic behaviour of the cracked structure to be different from that of a healthy one. Vibration-based damage detection methods have attracted considerable attention over the past few decades. These methods generally use changes to the physical properties of structures for the purpose of crack detection. In this thesis, two new vibration-based methods have been developed for damage detection in beam-like and rotor-type structures. The first method performs the entire signal processing required for crack detection in time domain. It is based on assessing the normality of vibration responses using the normal probability plot (NPP). The amount of deviation between the actual and normal distribution of measured vibration responses was calculated along the length of the structure to localise the crack. The second proposed method converts the vibration responses into frequency domain for further processing. Excitation of the cracked structure at a given frequency always generates higher harmonic components of the exciting frequency due to the breathing of the crack. This method uses the operational deflection shape of the structure at the exciting frequency and its higher harmonics to identify the crack location. Avoiding complicated signal processing in frequency domain is the main advantage of the first method. However, more precise identification of crack locations can be obtained through the second method. Generally, both methods have the advantage of being easy, reference-free and applicable to in-situ testing for any structure. The concept and computational approach of both methods along with their validations through numerical and experimental examples have been presented. Moreover, different input excitations have been used to evaluate the capability of the developed methods in detecting the crack location(s).

Subjects/Keywords: 621.382; Damage Detection; Crack Breathing; Finite Element; Residual Operational Deflection Shape; Deviation from Normal Distribution

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APA (6^th Edition):

Asnaashari, E. (2014). Vibration-based damage detection in structures. (Doctoral Dissertation). University of Manchester. Retrieved from https://www.research.manchester.ac.uk/portal/en/theses/vibrationbased-damage-detection-in-structures(09061582-55fb-4fba-846e-2156dd4ef172).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.668545

Chicago Manual of Style (16^th Edition):

Asnaashari, Erfan. “Vibration-based damage detection in structures.” 2014. Doctoral Dissertation, University of Manchester. Accessed December 14, 2019. https://www.research.manchester.ac.uk/portal/en/theses/vibrationbased-damage-detection-in-structures(09061582-55fb-4fba-846e-2156dd4ef172).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.668545.

MLA Handbook (7^th Edition):

Asnaashari, Erfan. “Vibration-based damage detection in structures.” 2014. Web. 14 Dec 2019.

Vancouver:

Asnaashari E. Vibration-based damage detection in structures. [Internet] [Doctoral dissertation]. University of Manchester; 2014. [cited 2019 Dec 14]. Available from: https://www.research.manchester.ac.uk/portal/en/theses/vibrationbased-damage-detection-in-structures(09061582-55fb-4fba-846e-2156dd4ef172).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.668545.

Council of Science Editors:

Asnaashari E. Vibration-based damage detection in structures. [Doctoral Dissertation]. University of Manchester; 2014. Available from: https://www.research.manchester.ac.uk/portal/en/theses/vibrationbased-damage-detection-in-structures(09061582-55fb-4fba-846e-2156dd4ef172).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.668545

University of Manchester

25. Gill, Peter James. Investigating leak rates for "Leak-before-Break" assessments.

Degree: Thesis (D.Eng.), 2013, University of Manchester

URL: https://www.research.manchester.ac.uk/portal/en/theses/investigating-leak-rates-for-leakbeforebreak-assessments(56a619de-7e2f-470e-9249-fbf273a5d79d).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.607012

► An investigation into the thermo-mechanical closure effect when a fluid leaks through a crack is presented here. The extended finite element method is the modelling… (more)

Subjects/Keywords: 621.402; Extended Finite Element Method; Heat Transfer; Thermal Hydraulics; Leak-before-Break; Nuclear Engineering

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APA (6^th Edition):

Gill, P. J. (2013). Investigating leak rates for "Leak-before-Break" assessments. (Doctoral Dissertation). University of Manchester. Retrieved from https://www.research.manchester.ac.uk/portal/en/theses/investigating-leak-rates-for-leakbeforebreak-assessments(56a619de-7e2f-470e-9249-fbf273a5d79d).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.607012

Chicago Manual of Style (16^th Edition):

Gill, Peter James. “Investigating leak rates for "Leak-before-Break" assessments.” 2013. Doctoral Dissertation, University of Manchester. Accessed December 14, 2019. https://www.research.manchester.ac.uk/portal/en/theses/investigating-leak-rates-for-leakbeforebreak-assessments(56a619de-7e2f-470e-9249-fbf273a5d79d).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.607012.

MLA Handbook (7^th Edition):

Gill, Peter James. “Investigating leak rates for "Leak-before-Break" assessments.” 2013. Web. 14 Dec 2019.

Vancouver:

Gill PJ. Investigating leak rates for "Leak-before-Break" assessments. [Internet] [Doctoral dissertation]. University of Manchester; 2013. [cited 2019 Dec 14]. Available from: https://www.research.manchester.ac.uk/portal/en/theses/investigating-leak-rates-for-leakbeforebreak-assessments(56a619de-7e2f-470e-9249-fbf273a5d79d).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.607012.

Council of Science Editors:

Gill PJ. Investigating leak rates for "Leak-before-Break" assessments. [Doctoral Dissertation]. University of Manchester; 2013. Available from: https://www.research.manchester.ac.uk/portal/en/theses/investigating-leak-rates-for-leakbeforebreak-assessments(56a619de-7e2f-470e-9249-fbf273a5d79d).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.607012

University of Manchester

26. Al-Sibahy, Adnan Flayih Hassan. Thermo-mechanical behaviour of a novel lightweight concrete and its application in masonry walls.

Degree: PhD, 2012, University of Manchester

URL: https://www.research.manchester.ac.uk/portal/en/theses/thermomechanical-behaviour-of-a-novel-lightweight-concrete-and-its-applicationin-masonry-walls(a803fcb4-a33c-4594-8622-87e565a7ceb4).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.566521

► The development of lightweight concretes has made a contribution to advances in structural design. It would be useful to further improve the mechanical properties of… (more)

▼ The development of lightweight concretes has made a contribution to advances in structural design. It would be useful to further improve the mechanical properties of lightweight concrete formulations whilst enhancing their resistance to fire degradation and reduced thermal conductivity. Improving the sustainability of any new proposed lightweight concrete formulation is desirable, for example by the inclusion of waste stream components into the formulation.This thesis describes an investigation of the mechanical, thermal and fire resistance properties of a new type of expanded clay lightweight concrete formulation in which varying quantities of sand are replaced by crushed glass aggregate, in conjunction with the addition of metakaolin (which may be available as a waste component from the manufacture of paper) as a partial replacement for the cement. The investigation involved short and long-term laboratory testing of a range of mechanical and thermal properties of individual concrete formulations and small scale structural elements consisting of masonry blocks made from these formulations (so called wallettes). An extensive programme of Finite Element Analysis using Abaqus was also performed.The results obtained show that it is possible to produce a structural expanded clay lightweight concrete that possesses good thermal properties by incorporating of ground glass and metakaolin. Compressive and splitting tensile strengths, as well as the modulus of elasticity, increased with an increase in the metakaolin content, while concrete density decreased. Reductions in thermal conductivity and improvements in fire resistance criteria were also observed in comparison with conventional lightweight concrete mixtures. For example, measured thermal conductivity values ranged from 0.092 W/m.K to 0.177 W/m.K, and the insulation criterion (an indicator of resistance to fire) reached up to 110 minutes for a concrete member with a thickness of 29 mm. The highest resistance to the effects of high temperatures was observed for concrete mixes containing either 15% or 30% recycled glass with 10% metakaolin.The maximum axial loads at failure were 474 kN and 558 kN for reference and modified wallettes respectively, implying corresponding bearing capacities of 7.1 MPa and 8.3 MPa. The critical path of the failure mode was similar for all of the wallettes tested and normally began underneath the load point, then passed through the concrete blocks and head joint to reach the toe of the wallette. The masonry wallettes formulated using reference lightweight concrete blocks exhibited failure due to explosive spalling at 400 °C with no applied mechanical load, whereas the second type of masonry wallettes (the modified wallettes) did not show such behaviour.The results of Finite Element Analysis showed that the coefficient of thermal convection had the most influence upon the insulation criterion. From a structural perspective, the key parameters were the value of penalty stiffness and imperfections in wallette construction. In general, a close…

Subjects/Keywords: 624.1; Lightweight concrete; Recycled glass; Masonry walls; Thermal behaviour; Finite Element Analysis

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APA (6^th Edition):

Al-Sibahy, A. F. H. (2012). Thermo-mechanical behaviour of a novel lightweight concrete and its application in masonry walls. (Doctoral Dissertation). University of Manchester. Retrieved from https://www.research.manchester.ac.uk/portal/en/theses/thermomechanical-behaviour-of-a-novel-lightweight-concrete-and-its-applicationin-masonry-walls(a803fcb4-a33c-4594-8622-87e565a7ceb4).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.566521

Chicago Manual of Style (16^th Edition):

Al-Sibahy, Adnan Flayih Hassan. “Thermo-mechanical behaviour of a novel lightweight concrete and its application in masonry walls.” 2012. Doctoral Dissertation, University of Manchester. Accessed December 14, 2019. https://www.research.manchester.ac.uk/portal/en/theses/thermomechanical-behaviour-of-a-novel-lightweight-concrete-and-its-applicationin-masonry-walls(a803fcb4-a33c-4594-8622-87e565a7ceb4).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.566521.

MLA Handbook (7^th Edition):

Al-Sibahy, Adnan Flayih Hassan. “Thermo-mechanical behaviour of a novel lightweight concrete and its application in masonry walls.” 2012. Web. 14 Dec 2019.

Vancouver:

Al-Sibahy AFH. Thermo-mechanical behaviour of a novel lightweight concrete and its application in masonry walls. [Internet] [Doctoral dissertation]. University of Manchester; 2012. [cited 2019 Dec 14]. Available from: https://www.research.manchester.ac.uk/portal/en/theses/thermomechanical-behaviour-of-a-novel-lightweight-concrete-and-its-applicationin-masonry-walls(a803fcb4-a33c-4594-8622-87e565a7ceb4).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.566521.

Council of Science Editors:

Al-Sibahy AFH. Thermo-mechanical behaviour of a novel lightweight concrete and its application in masonry walls. [Doctoral Dissertation]. University of Manchester; 2012. Available from: https://www.research.manchester.ac.uk/portal/en/theses/thermomechanical-behaviour-of-a-novel-lightweight-concrete-and-its-applicationin-masonry-walls(a803fcb4-a33c-4594-8622-87e565a7ceb4).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.566521

University of Manchester

27. Prinja, Gaurav Kant. Adaptive solvers for elliptic and parabolic partial differential equations.

Degree: PhD, 2010, University of Manchester

URL: https://www.research.manchester.ac.uk/portal/en/theses/adaptive-solvers-for-elliptic-and-parabolic-partial-differential-equations(f0894eb2-9e06-41ff-82fd-a7bde36c816c).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.527187

► In this thesis our primary interest is in developing adaptive solution methods for parabolic and elliptic partial differential equations. The convection-diffusion equation is used as… (more)

▼ In this thesis our primary interest is in developing adaptive solution methods for parabolic and elliptic partial differential equations. The convection-diffusion equation is used as a representative test problem. Investigations are made into adaptive temporal solvers implementing only a few changes to existing software. This includes a comparison of commercial code against some more academic releases. A novel way to select step sizes for an adaptive BDF2 code is introduced. A chapter is included introducing some functional analysis that is required to understand aspects of the finite element method and error estimation. Two error estimators are derived and proofs of their error bounds are covered. A new finite element package is written, implementing a rather interesting error estimator in one dimension to drive a rather standard refinement/coarsening type of adaptivity. This is compared to a commercially available partial differential equation solver and an investigation into the properties of the two inspires the development of a new method designed to very quickly and directly equidistribute the errors between elements. This new method is not really a refinement technique but doesn't quite fit the traditional description of a moving mesh either. We show that this method is far more effective at equidistribution of errors than a simple moving mesh method and the original simple adaptive method. A simple extension of the new method is proposed that would be a mesh reconstruction method. Finally the new code is extended to solve steady-state problems in two dimensions. The mesh refinement method from one dimension does not offer a simple extension, so the error estimator is used to supply an impression of the local topology of the error on each element. This in turn allows us to develop a new anisotropic refinement algorithm, which is more in tune with the nature of the error on the parent element. Whilst the benefits observed in one dimension are not directly transferred into the two-dimensional case, the obtained meshes seem to better capture the topology of the solution.

Subjects/Keywords: 510; Partial Differential Equations; Mesh Moving; Mesh Moving; Finite element method; Mesh reconstruction

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Prinja, G. K. (2010). Adaptive solvers for elliptic and parabolic partial differential equations. (Doctoral Dissertation). University of Manchester. Retrieved from https://www.research.manchester.ac.uk/portal/en/theses/adaptive-solvers-for-elliptic-and-parabolic-partial-differential-equations(f0894eb2-9e06-41ff-82fd-a7bde36c816c).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.527187

Chicago Manual of Style (16^th Edition):

Prinja, Gaurav Kant. “Adaptive solvers for elliptic and parabolic partial differential equations.” 2010. Doctoral Dissertation, University of Manchester. Accessed December 14, 2019. https://www.research.manchester.ac.uk/portal/en/theses/adaptive-solvers-for-elliptic-and-parabolic-partial-differential-equations(f0894eb2-9e06-41ff-82fd-a7bde36c816c).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.527187.

MLA Handbook (7^th Edition):

Prinja, Gaurav Kant. “Adaptive solvers for elliptic and parabolic partial differential equations.” 2010. Web. 14 Dec 2019.

Vancouver:

Prinja GK. Adaptive solvers for elliptic and parabolic partial differential equations. [Internet] [Doctoral dissertation]. University of Manchester; 2010. [cited 2019 Dec 14]. Available from: https://www.research.manchester.ac.uk/portal/en/theses/adaptive-solvers-for-elliptic-and-parabolic-partial-differential-equations(f0894eb2-9e06-41ff-82fd-a7bde36c816c).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.527187.

Council of Science Editors:

Prinja GK. Adaptive solvers for elliptic and parabolic partial differential equations. [Doctoral Dissertation]. University of Manchester; 2010. Available from: https://www.research.manchester.ac.uk/portal/en/theses/adaptive-solvers-for-elliptic-and-parabolic-partial-differential-equations(f0894eb2-9e06-41ff-82fd-a7bde36c816c).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.527187

University of Manchester

28. Duffus, Philippa. Manufacture, analysis and conservation strategies for historic tapestries.

Degree: PhD, 2013, University of Manchester

URL: https://www.research.manchester.ac.uk/portal/en/theses/manufacture-analysis-and-conservation-strategies-for-historic-tapestries(17c43926-9cf4-4b44-a51b-ec54106f1f04).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.607005

► This project aimed to address the lack of research into the mechanical properties and degradation mechanisms for historical tapestries at the fabric level and understand… (more)

▼ This project aimed to address the lack of research into the mechanical properties and degradation mechanisms for historical tapestries at the fabric level and understand how effective conservation support strategies can be in the preservation of these artifacts. The research incorporated a large range of techniques from diverse disciplines including weaving, ageing, computer modeling, biochemistry and conservation science. The successful manufacture and ageing of relevant samples provided an excellent opportunity to include testing of historical samples for comparison. Tensile testing of all samples provided a valuable insight into the characteristics of degraded historical samples compared to artificially aged samples. Although individual ageing processes – including UV ageing, Relative Humidity (RH) – thermal cycling and mechanical strain ageing produced a reduction in strength, the historical samples showed a far greater loss of strength due to the combination of all types of ageing in addition to handling and pollution damage. A proteomic analysis of the wool fibres resulted in a greater understanding of the degradative “dark” wool ageing process which suggests that wool yellowing and tendering can be produced not just through photo-chemical reaction. Additionally, the chemical analysis laid an important foundation for future research into linking chemical mechanisms of damage with mechanical loss of strength. Analysis using electron paramagnetic resonance spectroscopy (EPR) provided an insight into the free radical chemistry of a range of wool/wool samples. It was observed that the light aged samples produced thiyl radicals whereas thioperoxy radicals were seen in the heat-humidity aged samples. This implies separate chemical reactions occur to produce degradation in the different ageing regimes. EPR analysis of some historical samples produced a carbon-based radical peak linked to a soot calibration signal. Further research on historical samples found phenolic radicals, possibly linked to the complex dye chemistry. Further research needs to be undertaken to fully clarify these findings. A world-wide questionnaire to textile conservators has provided a useful resource in terms of a survey of methods and materials used across the world – including technical data as well as more “ethical” motivations for conservation. The results of this survey were used along with the physical data collated in the mechanical testing as information inputted into a finite element model (FEA) to undertake the digital modeling of a tapestry hanging under its own weight. Although more research is needed to fully develop this model, a preliminary investigation has been established which can be used in future research as a tool for textile conservators across the world.

Subjects/Keywords: 746.3; Tapestry; Wool; Silk; Degradation; Accelerated ageing; Finite element analysis; EPR; Tensile testing

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Duffus, P. (2013). Manufacture, analysis and conservation strategies for historic tapestries. (Doctoral Dissertation). University of Manchester. Retrieved from https://www.research.manchester.ac.uk/portal/en/theses/manufacture-analysis-and-conservation-strategies-for-historic-tapestries(17c43926-9cf4-4b44-a51b-ec54106f1f04).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.607005

Chicago Manual of Style (16^th Edition):

Duffus, Philippa. “Manufacture, analysis and conservation strategies for historic tapestries.” 2013. Doctoral Dissertation, University of Manchester. Accessed December 14, 2019. https://www.research.manchester.ac.uk/portal/en/theses/manufacture-analysis-and-conservation-strategies-for-historic-tapestries(17c43926-9cf4-4b44-a51b-ec54106f1f04).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.607005.

MLA Handbook (7^th Edition):

Duffus, Philippa. “Manufacture, analysis and conservation strategies for historic tapestries.” 2013. Web. 14 Dec 2019.

Vancouver:

Duffus P. Manufacture, analysis and conservation strategies for historic tapestries. [Internet] [Doctoral dissertation]. University of Manchester; 2013. [cited 2019 Dec 14]. Available from: https://www.research.manchester.ac.uk/portal/en/theses/manufacture-analysis-and-conservation-strategies-for-historic-tapestries(17c43926-9cf4-4b44-a51b-ec54106f1f04).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.607005.

Council of Science Editors:

Duffus P. Manufacture, analysis and conservation strategies for historic tapestries. [Doctoral Dissertation]. University of Manchester; 2013. Available from: https://www.research.manchester.ac.uk/portal/en/theses/manufacture-analysis-and-conservation-strategies-for-historic-tapestries(17c43926-9cf4-4b44-a51b-ec54106f1f04).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.607005

University of Manchester

29. Abdullah, Ahmad Mahmoud. Analysis of repaired/strengthened R.C. structures using composite materials : punching shear.

Degree: PhD, 2011, University of Manchester

URL: https://www.research.manchester.ac.uk/portal/en/theses/analysis-of-repairedstrengthened-rc-structures-using-composite-materials-punching-shear(6fd3f27c-ef35-4996-9707-09187ad10e9f).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.532219

► Fibre reinforced plastics (FRP) have been used widely in civil engineering in order to improve the structural response (deformation and stress). Most of the current… (more)

Subjects/Keywords: 624.1834; Punching shear, prestressed FRP, debonding, critical diagonal crack; Finite element analysis

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Abdullah, A. M. (2011). Analysis of repaired/strengthened R.C. structures using composite materials : punching shear. (Doctoral Dissertation). University of Manchester. Retrieved from https://www.research.manchester.ac.uk/portal/en/theses/analysis-of-repairedstrengthened-rc-structures-using-composite-materials-punching-shear(6fd3f27c-ef35-4996-9707-09187ad10e9f).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.532219

Chicago Manual of Style (16^th Edition):

Abdullah, Ahmad Mahmoud. “Analysis of repaired/strengthened R.C. structures using composite materials : punching shear.” 2011. Doctoral Dissertation, University of Manchester. Accessed December 14, 2019. https://www.research.manchester.ac.uk/portal/en/theses/analysis-of-repairedstrengthened-rc-structures-using-composite-materials-punching-shear(6fd3f27c-ef35-4996-9707-09187ad10e9f).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.532219.

MLA Handbook (7^th Edition):

Abdullah, Ahmad Mahmoud. “Analysis of repaired/strengthened R.C. structures using composite materials : punching shear.” 2011. Web. 14 Dec 2019.

Vancouver:

Abdullah AM. Analysis of repaired/strengthened R.C. structures using composite materials : punching shear. [Internet] [Doctoral dissertation]. University of Manchester; 2011. [cited 2019 Dec 14]. Available from: https://www.research.manchester.ac.uk/portal/en/theses/analysis-of-repairedstrengthened-rc-structures-using-composite-materials-punching-shear(6fd3f27c-ef35-4996-9707-09187ad10e9f).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.532219.

Council of Science Editors:

Abdullah AM. Analysis of repaired/strengthened R.C. structures using composite materials : punching shear. [Doctoral Dissertation]. University of Manchester; 2011. Available from: https://www.research.manchester.ac.uk/portal/en/theses/analysis-of-repairedstrengthened-rc-structures-using-composite-materials-punching-shear(6fd3f27c-ef35-4996-9707-09187ad10e9f).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.532219

University of Manchester

30. Fahad, Muhammad. A heat partition investigation of multilayer coated carbide tools for high speed machining through experimental studies and finite element modelling.

Degree: PhD, 2012, University of Manchester

URL: https://www.research.manchester.ac.uk/portal/en/theses/a-heat-partition-investigation-of-multilayer-coated-carbide-tools-for-high-speed-machining-through-experimental-studies-and-finite-element-modelling(dfa40f00-df30-403f-80ae-7533b41bedbd).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.553500

► High Speed Machining (HSM) is associated with higher cutting velocities and table feedrates and higher material removal rate, lower cutting forces in contrast to conventional… (more)

▼ High Speed Machining (HSM) is associated with higher cutting velocities and table feedrates and higher material removal rate, lower cutting forces in contrast to conventional machining. HSM can be undertaken dry or near dry and hence it is considered as environmentally friendly machining in relation to the use of cutting fluids. A key challenge in HSM is that, the thermal loads generated during the cutting process can be a major driver of thermally activated wear mechanism and hence affect machining performance. The ability of cutting tools to act as thermal barrier can be a highly desirable property for dry and HSM. Recently, research work has been conducted on laboratory based coated cutting tools to model and understand the fraction of heat that enters the cutting tool. These studies have shown the potential for TiN and TiAlN coated tools in reducing heat partition to the cutting tool when compared to uncoated tools. This PhD extended this work to modelling and characterising the heat partition for new generation commercial coated cutting tools considering tools from major insert manufactures. For this study commercial coated carbide tools were classified into two groups. In one group were coatings uniformly applied on both rake and flank faces of the insert (SERIES). The second group were tools that had different top coats for the rake and flank faces (Functionally Graded). This concept of functional grading is used to tailor the coating selection to the conditions that exist on a tool face. Moreover, the issue of restricted chip contact was modelled and clarified in terms of its impact on heat partition. This chip breaker design is of particular importance to inserts used for machining ductile materials. Thus the PhD has applied research methods to industrial cutting tools and helped elucidate the important aspects relating to the design, layout and selection of multilayer coatings. The heat partition was quantified by using a combined Finite Element (FE) and experimental approach. This methodology was applied by taking into consideration the appropriate friction phenomena during HSM i.e. sticking and sliding. A restricted contact length with groove profile geometry was considered for the application of heat load in the FE model. Orthogonal and external turning of AISI/SAE 4140 medium carbon alloy steel was conducted over a wide range of cutting speeds. An infrared thermal imaging camera was used to measure cutting temperatures. The results show that the layout of the coating can significantly affect the heat distribution into the cutting tool, specifically; the top coat can alter the friction conditions between the tool-chip contact. The distribution of heat (heat partition) into the cutting tool insert with the thickest layer of Al2O3 as a top coating is the lowest in the entire range of cutting speeds tested i.e. 10.5% at lower cutting speed and reduced to 3.4% at highest cutting speed. Investigations were also conducted to quantify the contribution of heat from the primary and secondary deformation zones…

Subjects/Keywords: 671.35; Multilayer coated tools; Finite Element Modelling; Restricted contact length; Functionally Graded Coated tools

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Fahad, M. (2012). A heat partition investigation of multilayer coated carbide tools for high speed machining through experimental studies and finite element modelling. (Doctoral Dissertation). University of Manchester. Retrieved from https://www.research.manchester.ac.uk/portal/en/theses/a-heat-partition-investigation-of-multilayer-coated-carbide-tools-for-high-speed-machining-through-experimental-studies-and-finite-element-modelling(dfa40f00-df30-403f-80ae-7533b41bedbd).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.553500

Chicago Manual of Style (16^th Edition):

Fahad, Muhammad. “A heat partition investigation of multilayer coated carbide tools for high speed machining through experimental studies and finite element modelling.” 2012. Doctoral Dissertation, University of Manchester. Accessed December 14, 2019. https://www.research.manchester.ac.uk/portal/en/theses/a-heat-partition-investigation-of-multilayer-coated-carbide-tools-for-high-speed-machining-through-experimental-studies-and-finite-element-modelling(dfa40f00-df30-403f-80ae-7533b41bedbd).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.553500.

MLA Handbook (7^th Edition):

Fahad, Muhammad. “A heat partition investigation of multilayer coated carbide tools for high speed machining through experimental studies and finite element modelling.” 2012. Web. 14 Dec 2019.

Vancouver:

Fahad M. A heat partition investigation of multilayer coated carbide tools for high speed machining through experimental studies and finite element modelling. [Internet] [Doctoral dissertation]. University of Manchester; 2012. [cited 2019 Dec 14]. Available from: https://www.research.manchester.ac.uk/portal/en/theses/a-heat-partition-investigation-of-multilayer-coated-carbide-tools-for-high-speed-machining-through-experimental-studies-and-finite-element-modelling(dfa40f00-df30-403f-80ae-7533b41bedbd).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.553500.

Council of Science Editors:

Fahad M. A heat partition investigation of multilayer coated carbide tools for high speed machining through experimental studies and finite element modelling. [Doctoral Dissertation]. University of Manchester; 2012. Available from: https://www.research.manchester.ac.uk/portal/en/theses/a-heat-partition-investigation-of-multilayer-coated-carbide-tools-for-high-speed-machining-through-experimental-studies-and-finite-element-modelling(dfa40f00-df30-403f-80ae-7533b41bedbd).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.553500

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Open Access Theses and Dissertations