subject:(FRACTURE FRACTURE MECHANICS MATERIALS TESTING )

Hong Kong University of Science and Technology

1. Xie, Tao. Effect of electrostatic tractions on the fracture behavior of a dielectric/piezoelectric material under mechanical and/or electric loading.

Degree: 2013, Hong Kong University of Science and Technology

URL: http://repository.ust.hk/ir/Record/1783.1-62370 ; https://doi.org/10.14711/thesis-b1255097 ; http://repository.ust.hk/ir/bitstream/1783.1-62370/1/th_redirect.html

► The effect of electrostatic tractions on the fracture behavior of a dielectric material under mechanical and/or electric loading is analyzed first by studying a pre-cracked… (more)

▼ The effect of electrostatic tractions on the fracture behavior of a dielectric material under mechanical and/or electric loading is analyzed first by studying a pre-cracked parallel-plate capacitor and illustrated by plots. The research is then extended into the case of piezoelectric materials considering the anisotropic material properties and the piezoelectric effect. The results are illustrated by plots based on a specific lead zirconate titanate (PZT-5H) sample, and also for another piezoelectric material with even higher dielectric/piezoelectric constants. The results are presented in terms of electrostatic tractions, crack opening/closing, and energy release rate. For dielectric materials, electrostatic tractions on the electrodes compress the material in front of the crack tip and stretch the material behind the crack tip, having the tendency to close the crack. Mechanical load is the driving force to propagate the crack, while applied electric field retards crack propagation due to the electrostatic tractions. As a direct consequence, the fracture criterion is composed of two parts: the energy release rate must exceed a critical value and the mechanical load must be higher than the critical value for crack opening. The investigation into piezoelectric materials indicates that influence of electrostatic tractions depends on the direction of applied electric field due to the piezoelectric effect. Under a positive electric field (aligned with the poling direction), the electrostatic tractions stretch the material behind the crack tip and have the tendency to close the crack. While under a negative electric field (opposite to the poling direction), the electrostatic tractions compress the material behind the crack tip and promotes crack opening process. Mechanical load is always the driving force to propagate the crack, while the effect of electric loading on the crack propagation due to the electrostatic tractions depends on applied electric field direction. The fracture criterion is composed of two parts: the energy release rate must exceed a critical value and the mechanical load must be higher than the critical value for crack opening. Special attention has to be paid to the loading condition under negative electric field due to its contribution to assisting in the crack opening process.

Subjects/Keywords: Piezoelectric materials ; Fracture ; Dielectrics ; Fracture mechanics

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APA (6^th Edition):

Xie, T. (2013). Effect of electrostatic tractions on the fracture behavior of a dielectric/piezoelectric material under mechanical and/or electric loading. (Thesis). Hong Kong University of Science and Technology. Retrieved from http://repository.ust.hk/ir/Record/1783.1-62370 ; https://doi.org/10.14711/thesis-b1255097 ; http://repository.ust.hk/ir/bitstream/1783.1-62370/1/th_redirect.html

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Xie, Tao. “Effect of electrostatic tractions on the fracture behavior of a dielectric/piezoelectric material under mechanical and/or electric loading.” 2013. Thesis, Hong Kong University of Science and Technology. Accessed March 07, 2021. http://repository.ust.hk/ir/Record/1783.1-62370 ; https://doi.org/10.14711/thesis-b1255097 ; http://repository.ust.hk/ir/bitstream/1783.1-62370/1/th_redirect.html.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Xie, Tao. “Effect of electrostatic tractions on the fracture behavior of a dielectric/piezoelectric material under mechanical and/or electric loading.” 2013. Web. 07 Mar 2021.

Vancouver:

Xie T. Effect of electrostatic tractions on the fracture behavior of a dielectric/piezoelectric material under mechanical and/or electric loading. [Internet] [Thesis]. Hong Kong University of Science and Technology; 2013. [cited 2021 Mar 07]. Available from: http://repository.ust.hk/ir/Record/1783.1-62370 ; https://doi.org/10.14711/thesis-b1255097 ; http://repository.ust.hk/ir/bitstream/1783.1-62370/1/th_redirect.html.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Xie T. Effect of electrostatic tractions on the fracture behavior of a dielectric/piezoelectric material under mechanical and/or electric loading. [Thesis]. Hong Kong University of Science and Technology; 2013. Available from: http://repository.ust.hk/ir/Record/1783.1-62370 ; https://doi.org/10.14711/thesis-b1255097 ; http://repository.ust.hk/ir/bitstream/1783.1-62370/1/th_redirect.html

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Ryerson University

2. Hossain, KM M. Fiber Bragg Grating Sensors For The Detection Of Metal Crack Initiation By Low Cycle Fatigue Test.

Degree: 2012, Ryerson University

URL: https://digital.library.ryerson.ca/islandora/object/RULA%3A1879

► Structural integrity is always an important issue for the service life time of any structure. Therefore, joint of the metal is also a vital point… (more)

Subjects/Keywords: Materials – Fatigue – Testing; Diffraction gratings; Optical fiber detectors; Fracture mechanics

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APA (6^th Edition):

Hossain, K. M. (2012). Fiber Bragg Grating Sensors For The Detection Of Metal Crack Initiation By Low Cycle Fatigue Test. (Thesis). Ryerson University. Retrieved from https://digital.library.ryerson.ca/islandora/object/RULA%3A1879

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Hossain, KM M. “Fiber Bragg Grating Sensors For The Detection Of Metal Crack Initiation By Low Cycle Fatigue Test.” 2012. Thesis, Ryerson University. Accessed March 07, 2021. https://digital.library.ryerson.ca/islandora/object/RULA%3A1879.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Hossain, KM M. “Fiber Bragg Grating Sensors For The Detection Of Metal Crack Initiation By Low Cycle Fatigue Test.” 2012. Web. 07 Mar 2021.

Vancouver:

Hossain KM. Fiber Bragg Grating Sensors For The Detection Of Metal Crack Initiation By Low Cycle Fatigue Test. [Internet] [Thesis]. Ryerson University; 2012. [cited 2021 Mar 07]. Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A1879.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Hossain KM. Fiber Bragg Grating Sensors For The Detection Of Metal Crack Initiation By Low Cycle Fatigue Test. [Thesis]. Ryerson University; 2012. Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A1879

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Michigan State University

3. Paleebut, Somnuek. CTOD and COD measurements on compact tension specimens of different thicknesses.

Degree: MS, 1978, Michigan State University

URL: http://etd.lib.msu.edu/islandora/object/etd:35003

Subjects/Keywords: Materials – Fatigue; Materials – Testing; Fracture mechanics

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APA (6^th Edition):

Paleebut, S. (1978). CTOD and COD measurements on compact tension specimens of different thicknesses. (Masters Thesis). Michigan State University. Retrieved from http://etd.lib.msu.edu/islandora/object/etd:35003

Chicago Manual of Style (16^th Edition):

Paleebut, Somnuek. “CTOD and COD measurements on compact tension specimens of different thicknesses.” 1978. Masters Thesis, Michigan State University. Accessed March 07, 2021. http://etd.lib.msu.edu/islandora/object/etd:35003.

MLA Handbook (7^th Edition):

Paleebut, Somnuek. “CTOD and COD measurements on compact tension specimens of different thicknesses.” 1978. Web. 07 Mar 2021.

Vancouver:

Paleebut S. CTOD and COD measurements on compact tension specimens of different thicknesses. [Internet] [Masters thesis]. Michigan State University; 1978. [cited 2021 Mar 07]. Available from: http://etd.lib.msu.edu/islandora/object/etd:35003.

Council of Science Editors:

Paleebut S. CTOD and COD measurements on compact tension specimens of different thicknesses. [Masters Thesis]. Michigan State University; 1978. Available from: http://etd.lib.msu.edu/islandora/object/etd:35003

Hong Kong University of Science and Technology

4. Leung, Chun Hang. Fractal simulation and characterisation : novel methods for analysing crack and fracture surface.

Degree: 2014, Hong Kong University of Science and Technology

URL: http://repository.ust.hk/ir/Record/1783.1-63078 ; https://doi.org/10.14711/thesis-b1302195 ; http://repository.ust.hk/ir/bitstream/1783.1-63078/1/th_redirect.html

► The visual characteristics of crack trajectories and fracture surfaces of common construction materials, such as concrete and rocks, are tortuous and irregular, owing to their… (more)

Subjects/Keywords: Fracture mechanics ; Mathematical models ; Analysis ; Building materials ; Surfaces ; Fracture ; Cracking

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APA (6^th Edition):

Leung, C. H. (2014). Fractal simulation and characterisation : novel methods for analysing crack and fracture surface. (Thesis). Hong Kong University of Science and Technology. Retrieved from http://repository.ust.hk/ir/Record/1783.1-63078 ; https://doi.org/10.14711/thesis-b1302195 ; http://repository.ust.hk/ir/bitstream/1783.1-63078/1/th_redirect.html

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Leung, Chun Hang. “Fractal simulation and characterisation : novel methods for analysing crack and fracture surface.” 2014. Thesis, Hong Kong University of Science and Technology. Accessed March 07, 2021. http://repository.ust.hk/ir/Record/1783.1-63078 ; https://doi.org/10.14711/thesis-b1302195 ; http://repository.ust.hk/ir/bitstream/1783.1-63078/1/th_redirect.html.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Leung, Chun Hang. “Fractal simulation and characterisation : novel methods for analysing crack and fracture surface.” 2014. Web. 07 Mar 2021.

Vancouver:

Leung CH. Fractal simulation and characterisation : novel methods for analysing crack and fracture surface. [Internet] [Thesis]. Hong Kong University of Science and Technology; 2014. [cited 2021 Mar 07]. Available from: http://repository.ust.hk/ir/Record/1783.1-63078 ; https://doi.org/10.14711/thesis-b1302195 ; http://repository.ust.hk/ir/bitstream/1783.1-63078/1/th_redirect.html.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Leung CH. Fractal simulation and characterisation : novel methods for analysing crack and fracture surface. [Thesis]. Hong Kong University of Science and Technology; 2014. Available from: http://repository.ust.hk/ir/Record/1783.1-63078 ; https://doi.org/10.14711/thesis-b1302195 ; http://repository.ust.hk/ir/bitstream/1783.1-63078/1/th_redirect.html

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Oregon State University

5. Addison, Dylan, A. Time-Dependent Crack Growth Mechanisms in Alloy 617 at 800°C in Air.

Degree: MS, 2017, Oregon State University

URL: http://hdl.handle.net/1957/61609

► Time-dependent crack growth mechanisms in Alloy 617 at 800°C in air were studied using compact tension samples machined in the L-T direction, cracked at temperature… (more)

Subjects/Keywords: Fracture Mechanics

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APA (6^th Edition):

Addison, Dylan, A. (2017). Time-Dependent Crack Growth Mechanisms in Alloy 617 at 800°C in Air. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/61609

Chicago Manual of Style (16^th Edition):

Addison, Dylan, A. “Time-Dependent Crack Growth Mechanisms in Alloy 617 at 800°C in Air.” 2017. Masters Thesis, Oregon State University. Accessed March 07, 2021. http://hdl.handle.net/1957/61609.

MLA Handbook (7^th Edition):

Addison, Dylan, A. “Time-Dependent Crack Growth Mechanisms in Alloy 617 at 800°C in Air.” 2017. Web. 07 Mar 2021.

Vancouver:

Addison, Dylan A. Time-Dependent Crack Growth Mechanisms in Alloy 617 at 800°C in Air. [Internet] [Masters thesis]. Oregon State University; 2017. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/1957/61609.

Council of Science Editors:

Addison, Dylan A. Time-Dependent Crack Growth Mechanisms in Alloy 617 at 800°C in Air. [Masters Thesis]. Oregon State University; 2017. Available from: http://hdl.handle.net/1957/61609

University of Adelaide

6. Khanna, Aditya. A new solution for an edge dislocation with applications to the stress and fracture analysis of multilayered media.

Degree: 2015, University of Adelaide

URL: http://hdl.handle.net/2440/100862

► The stress and fracture analysis of multilayered materials and structures containing crack-like defects is of interest in many research areas, such as composites, bio-mechanics, and… (more)

▼ The stress and fracture analysis of multilayered materials and structures containing crack-like defects is of interest in many research areas, such as composites, bio-mechanics, and geomechanics, and engineering applications, such as coatings, electronics, and adhesive joints. The main objective of this thesis is to further develop a general methodology and utilise it for the examination of fracture problems in multilayered materials. The general methodology is based upon the distributed dislocation technique and edge dislocation solutions obtained within the framework of plane theory of linear elasticity. This methodology has been shaped by the seminal contributions of many researchers over the past fifty years and currently represents a powerful tool for the analysis of crack problems. New theoretical models and techniques are developed in the present thesis for a range of multi-disciplinary problems utilising the adopted methodology. The research gaps and objectives are formulated specifically for each problem and discussed in separate chapters of this thesis. The solution of each of these problems represents an original and substantial contribution towards the respective area of research. The significant outcomes of this thesis include: a new approach for the analysis of reinforced cracks in layered media, a new mechanism for height control of hydraulic fractures in layered hydrocarbon reservoirs, and a new predictive model for skier-triggered avalanches. The original contributions of this thesis also include a new fundamental solution for an interfacial edge dislocation, which recovers all previously published solutions for edge dislocations in isotropic multilayered media. The obtained solution can be utilised to derive the governing integral equations for a wide variety of quasi-static crack problems in linearly elastic and isotropic multilayered materials, without any restrictions on the crack orientation or number of elastic layers. Therefore, the newly obtained solution further extends the general methodology to effectively solve a wide class of fracture problems in multilayered materials and structures. This thesis is presented in the form of a compendium of publications in high impact specialist journals. The main body of the thesis contains four articles which are united by the above mentioned theme and methodology. Three appendices are also included, which represent a compilation of the candidate’s publications on related topics. A complete publication list is provided in the forthcoming pages. Advisors/Committee Members: Kotousov, Andrei Georgievich (advisor), School of Mechanical Engineering (school).

Subjects/Keywords: fracture mechanics; multilayered materials; distributed dislocation technique

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APA (6^th Edition):

Khanna, A. (2015). A new solution for an edge dislocation with applications to the stress and fracture analysis of multilayered media. (Thesis). University of Adelaide. Retrieved from http://hdl.handle.net/2440/100862

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Khanna, Aditya. “A new solution for an edge dislocation with applications to the stress and fracture analysis of multilayered media.” 2015. Thesis, University of Adelaide. Accessed March 07, 2021. http://hdl.handle.net/2440/100862.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Khanna, Aditya. “A new solution for an edge dislocation with applications to the stress and fracture analysis of multilayered media.” 2015. Web. 07 Mar 2021.

Vancouver:

Khanna A. A new solution for an edge dislocation with applications to the stress and fracture analysis of multilayered media. [Internet] [Thesis]. University of Adelaide; 2015. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/2440/100862.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Khanna A. A new solution for an edge dislocation with applications to the stress and fracture analysis of multilayered media. [Thesis]. University of Adelaide; 2015. Available from: http://hdl.handle.net/2440/100862

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Delft University of Technology

7. Opraus, Thomas (author). Determining the suitability and application of CNT test specimens for failure assesment of welded high strength steels: Are Circumferentially Notched Tensile test specimens suitable and applicable for failure assessment of (welded) S690QT steel?.

Degree: 2017, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:03435526-a66f-478f-b177-eaef0938e108

► Research has shown the Circumferentially Notched Tensile (CNT) Specimen to potentially be a size-independent fracture toughness specimen. This research focusses on expanding the practical applicability… (more)

▼ Research has shown the Circumferentially Notched Tensile (CNT) Specimen to potentially be a size-independent fracture toughness specimen. This research focusses on expanding the practical applicability of the CNT specimen as well as using it to perform fracture toughness tests on S690QT steel and simulated CGHAZ material in S690. Based on literature research the research goals of the research were to investigate different pre-cracking methods with the focus of creating cracks with little or no eccentricity, improve the accuracy of CTOD measurements, determine the equivalency between CNT and conventional fracture toughness, determine the size of the plastic zone at the crack tip specimen and find alternative methods of microstructure simulation. In order to improve pre-cracking rotational bending (RB) and standalone compression – compression (C-C) fatigue were used, both lead to low eccentricity cracks, where the length of the crack could be influenced by changing the process parameters or specimen geometry. Room temperature CTOD measurements were performed on both, where RB specimen showed an average CTOD of 0.12 mm and C-C specimen of 0.18 mm. This difference is believed to be caused by the unique stress free situation at the crack tip of the C-C specimen. By using digital image correlation (DIC) and optical microscopy, the most accurate approximation of the CTOD was determined by comparing extensometer data to optical measurements. Influence of the eccentricity of the ligament was on the fracture toughness was found to increase for brittle material. Equivalency between CNT and conventional specimen was determined by comparing both RB and C-C specimen’s CTOD at low temperature (-100 °C). C-C specimen were found to show comparable fracture toughness, while RB showed an increased value. The size of the plastic zone was measured using EBSD, measurements on annealed S690 and low carbon steel failed to show distinctive plasticity, possibly caused by insufficient plastic strain. Inductive heating was tested as a replacement for Gleeble heat treatment with promising results, however the Gleeble was used for producing all S690 CGHAZ samples. C-C was found to be the only viable pre-fatiguing method, creating average crack length extensions of 0.49mm and an eccentricity of 0.18 mm. CNT results showed a slightly lower room temperature CTOD compared to conventional specimen (0.12 mm vs 0.08 mm), low temperature results showed comparable CTOD values. More research is recommended in further development of the new standalone C-C pre-fatiguing method, improving the inductive heating and cooling setup, expanding the DIC test setup, determining the plastic zone size by performing more EBSD measurements or by performing nanoindentation measurements and using CNT specimen on very brittle materials. Advisors/Committee Members: Riemslag, Ton (graduation committee), Popovich, Vera (mentor), Delft University of Technology (degree granting institution).

Subjects/Keywords: Fracture mechanics; Materials science; CNT specimen

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APA (6^th Edition):

Opraus, T. (. (2017). Determining the suitability and application of CNT test specimens for failure assesment of welded high strength steels: Are Circumferentially Notched Tensile test specimens suitable and applicable for failure assessment of (welded) S690QT steel?. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:03435526-a66f-478f-b177-eaef0938e108

Chicago Manual of Style (16^th Edition):

Opraus, Thomas (author). “Determining the suitability and application of CNT test specimens for failure assesment of welded high strength steels: Are Circumferentially Notched Tensile test specimens suitable and applicable for failure assessment of (welded) S690QT steel?.” 2017. Masters Thesis, Delft University of Technology. Accessed March 07, 2021. http://resolver.tudelft.nl/uuid:03435526-a66f-478f-b177-eaef0938e108.

MLA Handbook (7^th Edition):

Opraus, Thomas (author). “Determining the suitability and application of CNT test specimens for failure assesment of welded high strength steels: Are Circumferentially Notched Tensile test specimens suitable and applicable for failure assessment of (welded) S690QT steel?.” 2017. Web. 07 Mar 2021.

Vancouver:

Opraus T(. Determining the suitability and application of CNT test specimens for failure assesment of welded high strength steels: Are Circumferentially Notched Tensile test specimens suitable and applicable for failure assessment of (welded) S690QT steel?. [Internet] [Masters thesis]. Delft University of Technology; 2017. [cited 2021 Mar 07]. Available from: http://resolver.tudelft.nl/uuid:03435526-a66f-478f-b177-eaef0938e108.

Council of Science Editors:

Opraus T(. Determining the suitability and application of CNT test specimens for failure assesment of welded high strength steels: Are Circumferentially Notched Tensile test specimens suitable and applicable for failure assessment of (welded) S690QT steel?. [Masters Thesis]. Delft University of Technology; 2017. Available from: http://resolver.tudelft.nl/uuid:03435526-a66f-478f-b177-eaef0938e108

Rutgers University

8. Wang, Jian, 1987-. Fracture modeling of asphalt concrete with heterogeneous microstructure.

Degree: MS, Civil and Environmental Engineering, 2015, Rutgers University

URL: https://rucore.libraries.rutgers.edu/rutgers-lib/46453/

► Understanding fracture resistance of asphalt concrete is of great importance in designing pavements with long service life. This thesis focused on studying the micro and… (more)

▼ Understanding fracture resistance of asphalt concrete is of great importance in designing pavements with long service life. This thesis focused on studying the micro and global fracture behavior of heterogeneous asphalt concrete with a numerical analysis approach. Finite element (FE) models were built with the capacity of taking heterogeneity into consideration. The asphalt concrete was modeled as a multi-phase material with coarse aggregates and fine aggregate matrix (FAM). Viscoelastic properties were assigned to the FAM. Different damage models were incorporated to study fracture at two length scales: micro-fracture within FAM and coarse aggregate-FAM interface under small displacement and global fracture resistance in the semi-circular bending (SCB) test. For micro-fracture simulation, asphalt mixture was modeled with both adhesive and cohesive failure potential. Two different fracture models, cohesive zone model (CZM) and extended finite element model (XFEM), were adopted to simulate fracture damage within the FAM (cohesive failure) and at the FAM-aggregate interface (adhesive failure), respectively. For global fracture properties, the SCB test was simulated to predict the crack propagation pattern and the load-crack mouth opening displacement (CMOD) curve of asphalt concrete. Parametric studies with different material properties of FAM and coarse aggregates-FAM interface, morphological characteristics of coarse aggregates, and testing conditions (loading rate and temperature) were carried out to study their effects on fracture behavior of asphalt concrete. The numerical models provide an effective method to study fracture mechanism of heterogeneous asphalt concrete and generates meaningful findings. The development of cracking shows that the damage in the FAM material would initiate first at a small displacement and then interconnect with the damage developed at the FAM-aggregate interface. The higher angularity and larger aggregate size induces the greater damage level; while the orientation angle along with aspect ratio has influence on the anisotropic behavior of asphalt concrete. On the other hand, the SCB test simulations show good agreements with experimental results in the literature. Increasing fracture strength and energy of FAM significantly improves fracture resistance of asphalt concrete. The spatial distribution and angularity of coarse aggregate affect crack path; while the gradation and size of coarse aggregate affect fracture strength of asphalt concrete. Advisors/Committee Members: WANG, HAO (chair), Gucunski, Nenad (internal member), Yong, Yook-Kong (internal member).

Subjects/Keywords: Asphalt concrete; Aggregates (Building materials); Fracture mechanics

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APA (6^th Edition):

Wang, Jian, 1. (2015). Fracture modeling of asphalt concrete with heterogeneous microstructure. (Masters Thesis). Rutgers University. Retrieved from https://rucore.libraries.rutgers.edu/rutgers-lib/46453/

Chicago Manual of Style (16^th Edition):

Wang, Jian, 1987-. “Fracture modeling of asphalt concrete with heterogeneous microstructure.” 2015. Masters Thesis, Rutgers University. Accessed March 07, 2021. https://rucore.libraries.rutgers.edu/rutgers-lib/46453/.

MLA Handbook (7^th Edition):

Wang, Jian, 1987-. “Fracture modeling of asphalt concrete with heterogeneous microstructure.” 2015. Web. 07 Mar 2021.

Vancouver:

Wang, Jian 1. Fracture modeling of asphalt concrete with heterogeneous microstructure. [Internet] [Masters thesis]. Rutgers University; 2015. [cited 2021 Mar 07]. Available from: https://rucore.libraries.rutgers.edu/rutgers-lib/46453/.

Council of Science Editors:

Wang, Jian 1. Fracture modeling of asphalt concrete with heterogeneous microstructure. [Masters Thesis]. Rutgers University; 2015. Available from: https://rucore.libraries.rutgers.edu/rutgers-lib/46453/

University of North Texas

9. Dean, Andrew W. Feasibility of a New Technique to Determine Dynamic Tensile Behavior of Brittle Materials.

Degree: 2016, University of North Texas

URL: https://digital.library.unt.edu/ark:/67531/metadc849768/

► Dynamic tensile characterization of geo-materials is critical to the modeling and design of protective structures that are often made of concrete. One of the most… (more)

Subjects/Keywords: spall; dynamic; Kolsky; Split Hopkinson; brittle materials; tensile; technique; mechanical engineering; Materials – Dynamic testing.; Materials – Mechanical properties.; Fracture mechanics.

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APA (6^th Edition):

Dean, A. W. (2016). Feasibility of a New Technique to Determine Dynamic Tensile Behavior of Brittle Materials. (Thesis). University of North Texas. Retrieved from https://digital.library.unt.edu/ark:/67531/metadc849768/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Dean, Andrew W. “Feasibility of a New Technique to Determine Dynamic Tensile Behavior of Brittle Materials.” 2016. Thesis, University of North Texas. Accessed March 07, 2021. https://digital.library.unt.edu/ark:/67531/metadc849768/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Dean, Andrew W. “Feasibility of a New Technique to Determine Dynamic Tensile Behavior of Brittle Materials.” 2016. Web. 07 Mar 2021.

Vancouver:

Dean AW. Feasibility of a New Technique to Determine Dynamic Tensile Behavior of Brittle Materials. [Internet] [Thesis]. University of North Texas; 2016. [cited 2021 Mar 07]. Available from: https://digital.library.unt.edu/ark:/67531/metadc849768/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Dean AW. Feasibility of a New Technique to Determine Dynamic Tensile Behavior of Brittle Materials. [Thesis]. University of North Texas; 2016. Available from: https://digital.library.unt.edu/ark:/67531/metadc849768/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

10. Moilanen, Pekka. Pneumatic Servo-Controlled Material Testing Device Capable of Operating at High Temperature Water and Irradiation Conditions.

Degree: 2004, VTT Technical Research Centre of Finland

URL: http://lib.tkk.fi/Diss/2004/isbn9513863859/

► Special requirements set for the constructional materials used in energy production have strongly influenced the challenges in the component design work. Many material parameters such… (more)

▼ Special requirements set for the constructional materials used in energy production have strongly influenced the challenges in the component design work. Many material parameters such as corrosion, fracture mechanics, fatigue and oxide films are needed as input data for such work. The generation of reliable data calls also for more sophisticated testing systems. The newly developed pneumatic loading technology (patented in Finland and international patents pending) provides important potential benefits and has already been successfully applied to testing many kinds of materials in different test environments. As the moving parts that penetrate the pressure boundary are not needed, the friction force at the sealing element location is avoided. Therefore the load control with pneumatic loading unit is more accurate than with the conventional servo-hydraulic devices. This enables testing of small size samples which is an advantage e.g. when testing irradiated materials or testing materials inside the reactor core of a nuclear power plant and especially in determining environmentally assisted crack growth rates of structural materials. Furthermore, the new design enables simultaneous testing of several samples, which helps produce more reliable statistical data in a more economical way. This thesis summarizes my work done at the Technical Research Centre of Finland over the past 9 years to increase the knowledge of factors affecting material testing devices and material properties in gas and aqueous coolants at high temperatures. The developed pneumatic servo-controlled material testing device has been used to perform crack growth rate tests as a function of stress intensity factor K for AISI 316 stainless steel and Inconel 182 weld metal in Boiling Water Reactor (BWR) coolant by using small size (10x10x55 mm) three point bending specimens. The load and displacement were controlled during these tests by the pneumatic servo-controlled fracture measuring device (PSCFM device) and based on test results crack growth rates for Inconel weld metal and AISI 316 have been calculated. During the tests, accuracy with very slow constant displacement rates of 1.2 10-5 mm/min and 1.2 10-6 mm/min and long term stability of the pneumatic material testing system under high temperature water environment, has been verified. Furthermore, the crack growth rate for Inconel 182 weld metal as a function of sulphate content (10, 20, 30 ppb) of BWR coolant has been determined. These results shows that the crack growth rate of Inconel 182 weld material is strongly affected by the sulphate content of BWR coolant. Furthermore, prototypes of pneumatically powered fatigue (PSCFAT-device), controlled distance electrode (PSCCDE-device) and tensile (PSCINCORE-device) devices have been designed and tested. The units, which were based on proven technology, operated well and gave reliable test results for the material design parameters. The PSCFAT device was tested at room temperature and the degree of specimen bending and general system performance were… Advisors/Committee Members: Helsinki University of Technology, Department of Materials Science and Rock Engineering, VTT Industrial Systems.

Subjects/Keywords: constructional materials; material testing; fracture mechanics; fatigue damage; pneumatic loading; reactor cores; crack growth rate; servo-controlled testing system; high temperatures

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

APA (6^th Edition):

Moilanen, P. (2004). Pneumatic Servo-Controlled Material Testing Device Capable of Operating at High Temperature Water and Irradiation Conditions. (Thesis). VTT Technical Research Centre of Finland. Retrieved from http://lib.tkk.fi/Diss/2004/isbn9513863859/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Moilanen, Pekka. “Pneumatic Servo-Controlled Material Testing Device Capable of Operating at High Temperature Water and Irradiation Conditions.” 2004. Thesis, VTT Technical Research Centre of Finland. Accessed March 07, 2021. http://lib.tkk.fi/Diss/2004/isbn9513863859/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Moilanen, Pekka. “Pneumatic Servo-Controlled Material Testing Device Capable of Operating at High Temperature Water and Irradiation Conditions.” 2004. Web. 07 Mar 2021.

Vancouver:

Moilanen P. Pneumatic Servo-Controlled Material Testing Device Capable of Operating at High Temperature Water and Irradiation Conditions. [Internet] [Thesis]. VTT Technical Research Centre of Finland; 2004. [cited 2021 Mar 07]. Available from: http://lib.tkk.fi/Diss/2004/isbn9513863859/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Moilanen P. Pneumatic Servo-Controlled Material Testing Device Capable of Operating at High Temperature Water and Irradiation Conditions. [Thesis]. VTT Technical Research Centre of Finland; 2004. Available from: http://lib.tkk.fi/Diss/2004/isbn9513863859/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Virginia Tech

11. Gregory, M. A. Prediction of crack extension direction in unidirectional composites.

Degree: MS, Engineering Mechanics, 1984, Virginia Tech

URL: http://hdl.handle.net/10919/74504

► The purpose of this study was to gain a better understanding of the parameters affecting crack growth direction in unidirectional comµosite materials. To achieve this,… (more)

Subjects/Keywords: LD5655.V855 1984.G733; Composite materials – Defects – Testing; Composite materials – Fracture; Fracture mechanics

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APA (6^th Edition):

Gregory, M. A. (1984). Prediction of crack extension direction in unidirectional composites. (Masters Thesis). Virginia Tech. Retrieved from http://hdl.handle.net/10919/74504

Chicago Manual of Style (16^th Edition):

Gregory, M A. “Prediction of crack extension direction in unidirectional composites.” 1984. Masters Thesis, Virginia Tech. Accessed March 07, 2021. http://hdl.handle.net/10919/74504.

MLA Handbook (7^th Edition):

Gregory, M A. “Prediction of crack extension direction in unidirectional composites.” 1984. Web. 07 Mar 2021.

Vancouver:

Gregory MA. Prediction of crack extension direction in unidirectional composites. [Internet] [Masters thesis]. Virginia Tech; 1984. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/10919/74504.

Council of Science Editors:

Gregory MA. Prediction of crack extension direction in unidirectional composites. [Masters Thesis]. Virginia Tech; 1984. Available from: http://hdl.handle.net/10919/74504

Florida Atlantic University

12. Browning, Grant. Interlaminar mode III fracture ECT method - testing and analysis.

Degree: M.S.C.S., 2009, Florida Atlantic University

URL: http://purl.flvc.org/FAU/187206

►

Summary: In an effort to obtain an improved mode III fracture toughness test suitable for a testing standard, mechanics analysis, experimental testing, and finite element… (more)

Subjects/Keywords: Laminated materials – Testing; Fracture mechanics; Strength of materials – Testing; Composite materials – Testing

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APA (6^th Edition):

Browning, G. (2009). Interlaminar mode III fracture ECT method - testing and analysis. (Masters Thesis). Florida Atlantic University. Retrieved from http://purl.flvc.org/FAU/187206

Chicago Manual of Style (16^th Edition):

Browning, Grant. “Interlaminar mode III fracture ECT method - testing and analysis.” 2009. Masters Thesis, Florida Atlantic University. Accessed March 07, 2021. http://purl.flvc.org/FAU/187206.

MLA Handbook (7^th Edition):

Browning, Grant. “Interlaminar mode III fracture ECT method - testing and analysis.” 2009. Web. 07 Mar 2021.

Vancouver:

Browning G. Interlaminar mode III fracture ECT method - testing and analysis. [Internet] [Masters thesis]. Florida Atlantic University; 2009. [cited 2021 Mar 07]. Available from: http://purl.flvc.org/FAU/187206.

Council of Science Editors:

Browning G. Interlaminar mode III fracture ECT method - testing and analysis. [Masters Thesis]. Florida Atlantic University; 2009. Available from: http://purl.flvc.org/FAU/187206

Brunel University

13. Khor, WeeLiam. Crack tip opening displacement (CTOD) in single edge notched bend (SEN(B)).

Degree: PhD, 2018, Brunel University

URL: http://bura.brunel.ac.uk/handle/2438/16198 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.764968

► This thesis investigates the quantity Crack Tip Opening Displacement (CTOD) as a means to assess fracture toughness when measured in the Single Edge Notched Bend… (more)

▼ This thesis investigates the quantity Crack Tip Opening Displacement (CTOD) as a means to assess fracture toughness when measured in the Single Edge Notched Bend (SENB) specimen setup. A particular objective is to assess the effectiveness of the test when used for high strain-hardening materials (e.g. stainless steels). This has been an increasing concern as the current available methods were generally designed for lower strain hardening structural steel. Experimental work on CTOD tests included silicone casting of the crack, and constant displacement tests were also performed. The silicone castings enable physical measurement of the crack under an optical microscope. Results from a series of Finite Element (FE) models were validated from the experiments. δ5 surface measurements were obtained using Digital Image Correlation (DIC) as a courtesy of TWI, which were compared to surface CTOD measurements from the silicone castings. In addition to the experiments and Finite Element modelling, archived test data from TWI was processed, showing analytical differences between current Standard CTOD equations. CTOD calculations from BS 7448, ISO 12135, ASTM E1820 and WES 1108 were compared to the experimental and FE modelling results. For high strain hardening material, CTOD predicted by Standard equations (apart from those in BS 7448 and single point CTOD from ISO 12135) were lower than the values determined from silicone measurements and modelling. This potentially leads to over conservative values to be used in Engineering Critical Assessments (ECA) or material approval. Based on a series of different strain hardening property models, a relationship between strain hardening and the specimen rotational factor, rp was established. An improved equation for the calculation of CTOD is proposed, which gave good estimation of the experimental and Finite Element modelling results. The improved equation will be proposed for future amendments of the ISO 12135 standard. The results of this research enable the accurate fracture characterisation of a range of engineering alloys, with both low and high strain hardening behaviour in both the brittle and ductile fracture regime.

Subjects/Keywords: 620.1; Fracture mechanics; Fracture toughness testing; Material strain hardening; R-curves; Delta-5, d5

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APA (6^th Edition):

Khor, W. (2018). Crack tip opening displacement (CTOD) in single edge notched bend (SEN(B)). (Doctoral Dissertation). Brunel University. Retrieved from http://bura.brunel.ac.uk/handle/2438/16198 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.764968

Chicago Manual of Style (16^th Edition):

Khor, WeeLiam. “Crack tip opening displacement (CTOD) in single edge notched bend (SEN(B)).” 2018. Doctoral Dissertation, Brunel University. Accessed March 07, 2021. http://bura.brunel.ac.uk/handle/2438/16198 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.764968.

MLA Handbook (7^th Edition):

Khor, WeeLiam. “Crack tip opening displacement (CTOD) in single edge notched bend (SEN(B)).” 2018. Web. 07 Mar 2021.

Vancouver:

Khor W. Crack tip opening displacement (CTOD) in single edge notched bend (SEN(B)). [Internet] [Doctoral dissertation]. Brunel University; 2018. [cited 2021 Mar 07]. Available from: http://bura.brunel.ac.uk/handle/2438/16198 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.764968.

Council of Science Editors:

Khor W. Crack tip opening displacement (CTOD) in single edge notched bend (SEN(B)). [Doctoral Dissertation]. Brunel University; 2018. Available from: http://bura.brunel.ac.uk/handle/2438/16198 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.764968

14. Lafilé, Vincent. Comportement et déchirure de matériaux métalliques : développement d’essais expérimentaux pour l’étude de l’influence de la vitesse de déformation et de l’historique de chargement : Behavior and ductile fracture of two metals : new experimental techniques for the study of the strain rate and the load path effects.

Degree: Docteur es, Génie mécanique, 2018, Lorient

URL: http://www.theses.fr/2018LORIS501

►

La compréhension du comportement des matériaux minces sous différentes sollicitations est un enjeu en matière de sécurité. Les modèles de comportement mécanique et de rupture… (more)

▼

La compréhension du comportement des matériaux minces sous différentes sollicitations est un enjeu en matière de sécurité. Les modèles de comportement mécanique et de rupture ont évolué pour prendre en compte l’état de contrainte et la vitesse de déformation qui peuvent avoir une influence majeure sur la réponse du matériau. L’identification de ces modèles passe par la caractérisation expérimentale du matériau. Les essais mécaniques représentent donc toujours une étape indispensable au développement des outils numériques. L’objectif de ces travaux est donc de contribuer à l’apport de techniques expérimentales de caractérisation des matériaux. L’ensemble des travaux est illustré par l’étude de deux matériaux : un alliage d’aluminium AA- 2024-T3 et un acier dual phase DP450. L’effet de la vitesse de déformation sur le comportement en traction équi-biaxiale, ainsi que la déformation à rupture en traction équi-biaxiale et en traction en déformation plane sont étudiés. Pour cela, le dépouillement de l’essai de gonflement hydraulique (bulge test) est amélioré et un nouveau dispositif est utilisé pour atteindre des vitesses de déformation intermédiaires de 100 s-1. L’essai de poinçonnement hémisphérique et un nouvel essai de poinçonnement pour la traction en déformation plane sont effectués jusqu’à des vitesses de déformation intermédiaires. L’effet du trajet de chargement sur la déformation à rupture est également étudié. Une méthode de traction uni-axiale sur éprouvettes de grandes dimensions est développée pour appliquer un premier chargement. Ensuite un second chargement en traction équi-biaxiale ou en traction en déformation plane est appliqué jusqu’à rupture.

The understanding of thin materials behavior under various stress state is a current issue for security matters. Constitutive models and failure models evolved to take into account stress state and strain rate effect on material behavior. Experimental characterization of materials is necessary to identify models. Mechanical tests are mandatory for the development of numerical tools. The aim of this thesis is the development of experimental techniques for material characterization. This work is performed on two materials, a AA-2024-T3 aluminum alloy and DP450 dual phase steel. Strain rate effect on the equi-biaxial tension behavior and the failure, and on the plane strain tension failure is studied. For this purpose, we improved the analysis of bulge test and a new device is proposed ion order to attain strain rates up to 100 s-1. Hemispheric punch test and a new punch test dedicated to plane strain tension are proposed at high strain rates. Effect of loading path on failure strain is also studied. A new device for uniaxial tension on large specimens is use to apply the first load, a second loading under equi-biaxial tension or plane strain tension is then applied up to failure.

Advisors/Committee Members: Grolleau, Vincent (thesis director), Mahéo, Laurent (thesis director).

Subjects/Keywords: Traction en contraintes planes; Trajets de chargement; Metals – Mechanical properties; Fracture mechanics; Materials – Dynamic testing; 620.16

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APA (6^th Edition):

Lafilé, V. (2018). Comportement et déchirure de matériaux métalliques : développement d’essais expérimentaux pour l’étude de l’influence de la vitesse de déformation et de l’historique de chargement : Behavior and ductile fracture of two metals : new experimental techniques for the study of the strain rate and the load path effects. (Doctoral Dissertation). Lorient. Retrieved from http://www.theses.fr/2018LORIS501

Chicago Manual of Style (16^th Edition):

Lafilé, Vincent. “Comportement et déchirure de matériaux métalliques : développement d’essais expérimentaux pour l’étude de l’influence de la vitesse de déformation et de l’historique de chargement : Behavior and ductile fracture of two metals : new experimental techniques for the study of the strain rate and the load path effects.” 2018. Doctoral Dissertation, Lorient. Accessed March 07, 2021. http://www.theses.fr/2018LORIS501.

MLA Handbook (7^th Edition):

Lafilé, Vincent. “Comportement et déchirure de matériaux métalliques : développement d’essais expérimentaux pour l’étude de l’influence de la vitesse de déformation et de l’historique de chargement : Behavior and ductile fracture of two metals : new experimental techniques for the study of the strain rate and the load path effects.” 2018. Web. 07 Mar 2021.

Vancouver:

Lafilé V. Comportement et déchirure de matériaux métalliques : développement d’essais expérimentaux pour l’étude de l’influence de la vitesse de déformation et de l’historique de chargement : Behavior and ductile fracture of two metals : new experimental techniques for the study of the strain rate and the load path effects. [Internet] [Doctoral dissertation]. Lorient; 2018. [cited 2021 Mar 07]. Available from: http://www.theses.fr/2018LORIS501.

Council of Science Editors:

Lafilé V. Comportement et déchirure de matériaux métalliques : développement d’essais expérimentaux pour l’étude de l’influence de la vitesse de déformation et de l’historique de chargement : Behavior and ductile fracture of two metals : new experimental techniques for the study of the strain rate and the load path effects. [Doctoral Dissertation]. Lorient; 2018. Available from: http://www.theses.fr/2018LORIS501

University of Colorado

15. Wakeel, Shahlaa Al. Theoretical and Experimental Investigation of Matrix Inclusions on the Fracture Toughness of Composite Material.

Degree: PhD, 2017, University of Colorado

URL: https://scholar.colorado.edu/cven_gradetds/382

► This dissertation studies the impact of microstructure on macro-scale fracture parameters. Experimental and theoretical investigations of fracture toughness are carried out on a representative particulate… (more)

Subjects/Keywords: composite materials; fracture mechanics; jamming; order and disorder arrangement; scratch testing; three-point bending; Nanotechnology; Polymer Chemistry

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

APA (6^th Edition):

Wakeel, S. A. (2017). Theoretical and Experimental Investigation of Matrix Inclusions on the Fracture Toughness of Composite Material. (Doctoral Dissertation). University of Colorado. Retrieved from https://scholar.colorado.edu/cven_gradetds/382

Chicago Manual of Style (16^th Edition):

Wakeel, Shahlaa Al. “Theoretical and Experimental Investigation of Matrix Inclusions on the Fracture Toughness of Composite Material.” 2017. Doctoral Dissertation, University of Colorado. Accessed March 07, 2021. https://scholar.colorado.edu/cven_gradetds/382.

MLA Handbook (7^th Edition):

Wakeel, Shahlaa Al. “Theoretical and Experimental Investigation of Matrix Inclusions on the Fracture Toughness of Composite Material.” 2017. Web. 07 Mar 2021.

Vancouver:

Wakeel SA. Theoretical and Experimental Investigation of Matrix Inclusions on the Fracture Toughness of Composite Material. [Internet] [Doctoral dissertation]. University of Colorado; 2017. [cited 2021 Mar 07]. Available from: https://scholar.colorado.edu/cven_gradetds/382.

Council of Science Editors:

Wakeel SA. Theoretical and Experimental Investigation of Matrix Inclusions on the Fracture Toughness of Composite Material. [Doctoral Dissertation]. University of Colorado; 2017. Available from: https://scholar.colorado.edu/cven_gradetds/382

University of Colorado

16. Wakeel, Shahlaa Al. Theoretical and Experimental Investigation of Matrix Inclusions on the Fracture Toughness of Composite Material.

Degree: PhD, Civil, Environmental & Architectural Engineering, 2017, University of Colorado

URL: https://scholar.colorado.edu/cven_gradetds/83

► This dissertation studies the impact of microstructure on macro-scale fracture parameters. Experimental and theoretical investigations of fracture toughness are carried out on a representative particulate… (more)

Subjects/Keywords: Composite materials; Fracture mechanics; Jamming; Order and disorder arrangement; Scratch testing; Three-point bending; Nanotechnology; Polymer Chemistry

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

APA (6^th Edition):

Wakeel, S. A. (2017). Theoretical and Experimental Investigation of Matrix Inclusions on the Fracture Toughness of Composite Material. (Doctoral Dissertation). University of Colorado. Retrieved from https://scholar.colorado.edu/cven_gradetds/83

Chicago Manual of Style (16^th Edition):

Wakeel, Shahlaa Al. “Theoretical and Experimental Investigation of Matrix Inclusions on the Fracture Toughness of Composite Material.” 2017. Doctoral Dissertation, University of Colorado. Accessed March 07, 2021. https://scholar.colorado.edu/cven_gradetds/83.

MLA Handbook (7^th Edition):

Wakeel, Shahlaa Al. “Theoretical and Experimental Investigation of Matrix Inclusions on the Fracture Toughness of Composite Material.” 2017. Web. 07 Mar 2021.

Vancouver:

Wakeel SA. Theoretical and Experimental Investigation of Matrix Inclusions on the Fracture Toughness of Composite Material. [Internet] [Doctoral dissertation]. University of Colorado; 2017. [cited 2021 Mar 07]. Available from: https://scholar.colorado.edu/cven_gradetds/83.

Council of Science Editors:

Wakeel SA. Theoretical and Experimental Investigation of Matrix Inclusions on the Fracture Toughness of Composite Material. [Doctoral Dissertation]. University of Colorado; 2017. Available from: https://scholar.colorado.edu/cven_gradetds/83

University of Oxford

17. Mines, R. A. W. An experimental study of the dynamic response of notched bars.

Degree: PhD, 1984, University of Oxford

URL: http://ora.ox.ac.uk/objects/uuid:d0caf38d-7c0e-4793-bafb-1fd587dee501 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.353110

► A survey is made of analytic, experimental and numerical techniques in the field of the dynamic initiation, and early propagation, of cracks. As no closed… (more)

Subjects/Keywords: 624.1; Notched bar testing : Fracture mechanics : Strength of materials

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

APA (6^th Edition):

Mines, R. A. W. (1984). An experimental study of the dynamic response of notched bars. (Doctoral Dissertation). University of Oxford. Retrieved from http://ora.ox.ac.uk/objects/uuid:d0caf38d-7c0e-4793-bafb-1fd587dee501 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.353110

Chicago Manual of Style (16^th Edition):

Mines, R A W. “An experimental study of the dynamic response of notched bars.” 1984. Doctoral Dissertation, University of Oxford. Accessed March 07, 2021. http://ora.ox.ac.uk/objects/uuid:d0caf38d-7c0e-4793-bafb-1fd587dee501 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.353110.

MLA Handbook (7^th Edition):

Mines, R A W. “An experimental study of the dynamic response of notched bars.” 1984. Web. 07 Mar 2021.

Vancouver:

Mines RAW. An experimental study of the dynamic response of notched bars. [Internet] [Doctoral dissertation]. University of Oxford; 1984. [cited 2021 Mar 07]. Available from: http://ora.ox.ac.uk/objects/uuid:d0caf38d-7c0e-4793-bafb-1fd587dee501 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.353110.

Council of Science Editors:

Mines RAW. An experimental study of the dynamic response of notched bars. [Doctoral Dissertation]. University of Oxford; 1984. Available from: http://ora.ox.ac.uk/objects/uuid:d0caf38d-7c0e-4793-bafb-1fd587dee501 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.353110

University of Oxford

18. Parrinello, Antonino. A rate-pressure-dependent thermodynamically-consistent phase field model for the description of failure patterns in dynamic brittle fracture.

Degree: PhD, 2017, University of Oxford

URL: https://ora.ox.ac.uk/objects/uuid:c6590f4f-f4e2-40e3-ada1-49ba35c2a594 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.736113

► The investigation of failure in brittle materials, subjected to dynamic transient loading conditions, represents one of the ongoing challenges in the mechanics community. Progresses on… (more)

Subjects/Keywords: 620.1; Fracture Mechanics; Computational Mechanics; Engineering; Impact dynamics; Materials; Damage Mechanics; Continuum Mechanics; Micro-inertia; Impact; Rate-dependent fracture; Strain-softnening; High inertia fracture; Failure mode transition; Phase field models; Explicit finite element; Pressure-dependent fracture; Semi-brittle materials; Dynamic Fracture; Brittle fracture; Damage mechanics; Finite element

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

APA (6^th Edition):

Parrinello, A. (2017). A rate-pressure-dependent thermodynamically-consistent phase field model for the description of failure patterns in dynamic brittle fracture. (Doctoral Dissertation). University of Oxford. Retrieved from https://ora.ox.ac.uk/objects/uuid:c6590f4f-f4e2-40e3-ada1-49ba35c2a594 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.736113

Chicago Manual of Style (16^th Edition):

Parrinello, Antonino. “A rate-pressure-dependent thermodynamically-consistent phase field model for the description of failure patterns in dynamic brittle fracture.” 2017. Doctoral Dissertation, University of Oxford. Accessed March 07, 2021. https://ora.ox.ac.uk/objects/uuid:c6590f4f-f4e2-40e3-ada1-49ba35c2a594 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.736113.

MLA Handbook (7^th Edition):

Parrinello, Antonino. “A rate-pressure-dependent thermodynamically-consistent phase field model for the description of failure patterns in dynamic brittle fracture.” 2017. Web. 07 Mar 2021.

Vancouver:

Parrinello A. A rate-pressure-dependent thermodynamically-consistent phase field model for the description of failure patterns in dynamic brittle fracture. [Internet] [Doctoral dissertation]. University of Oxford; 2017. [cited 2021 Mar 07]. Available from: https://ora.ox.ac.uk/objects/uuid:c6590f4f-f4e2-40e3-ada1-49ba35c2a594 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.736113.

Council of Science Editors:

Parrinello A. A rate-pressure-dependent thermodynamically-consistent phase field model for the description of failure patterns in dynamic brittle fracture. [Doctoral Dissertation]. University of Oxford; 2017. Available from: https://ora.ox.ac.uk/objects/uuid:c6590f4f-f4e2-40e3-ada1-49ba35c2a594 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.736113

19. Muñiz Calvente, Miguel. The generalized local model: A methodology for probabilistic assessment of fracture under different failure criteria .

Degree: 2017, Universidad de Oviedo

URL: http://hdl.handle.net/10651/40748

► When designing structural and mechanical components, the criteria of structural integrity must be accomplished. Such criteria consist in assuring that the component will perform its… (more)

▼ When designing structural and mechanical components, the criteria of structural integrity must be accomplished. Such criteria consist in assuring that the component will perform its designed function of supporting loads or any kind of actions causing stress and strains in the material without catastrophic failure. This implies, from the point of view of fracture mechanics, safe prediction of static, dynamic and fatigue failure what requires previous knowledge of the loads, but also the mechanical properties of the component material such as density, hardness, strength and toughness and the dimensions (shape, size and thickness) which should be suitable to withstand the actions operating on it. Moreover, this concept requires performing an experimental program and its statistical analysis, as well as the interpretation of the results obtained, in order to achieve the mechanical characterization of the material. The latter consists in the probabilistic definition of the critical values of the reference parameter, denoted generalized parameter (GP), that will be used as a property related to the material to predict failure of the components made of such material. In this doctoral thesis, an approach is presented aiming at providing an objective definition of the material characterization in order to guarantee transferability from the experimental results obtained, irrespective of the test chosen and the shape and size of the specimen, to the component design. This methodology, which is denoted Generalized Local Model (GLM) because it represents a general solution without restrictions of former particular local models, provides the statistical information related to the distribution of the reference parameter considered, i.e. the primary failure cumulative distribution (PFCDF), which is identified as a characteristic property of the material under study. Moreover, this allows a possible assessment and eventual selection of the generalized parameter (GP) to be made as a result of the evaluation of its suitability. After the GLM is introduced and justified, some of its extensions are presented in order to overcome some usual situations arising during the evaluation of experimental results. First, the GLM is applied to the joint evaluation of experimental data from different programs, using different specimen or even test types, as they were a unique sample. In this way, higher reliability in the derivation of the primary failure cumulative distribution function (PFCDF) is achieved. Second, a methodology is developed and applied to solve the assessment of the so-called confounded data case (concurrent flaw populations) as an extension of the GLM. This allows the PFCDF to be obtained independently of the failure type involved. Third, the extension of the GLM to the fatigue lifetime analysis is justified as a result of the conjunction of the GLM and the fatigue Weibull model developed by Castillo and Canteli. The application of the models proposed in this doctoral thesis is illustrated using practical examples, such as: a)… Advisors/Committee Members: Fernández Canteli, Alfonso Carlos (advisor).

Subjects/Keywords: Probabilistic fracture mechanics

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APA (6^th Edition):

Muñiz Calvente, M. (2017). The generalized local model: A methodology for probabilistic assessment of fracture under different failure criteria . (Doctoral Dissertation). Universidad de Oviedo. Retrieved from http://hdl.handle.net/10651/40748

Chicago Manual of Style (16^th Edition):

Muñiz Calvente, Miguel. “The generalized local model: A methodology for probabilistic assessment of fracture under different failure criteria .” 2017. Doctoral Dissertation, Universidad de Oviedo. Accessed March 07, 2021. http://hdl.handle.net/10651/40748.

MLA Handbook (7^th Edition):

Muñiz Calvente, Miguel. “The generalized local model: A methodology for probabilistic assessment of fracture under different failure criteria .” 2017. Web. 07 Mar 2021.

Vancouver:

Muñiz Calvente M. The generalized local model: A methodology for probabilistic assessment of fracture under different failure criteria . [Internet] [Doctoral dissertation]. Universidad de Oviedo; 2017. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/10651/40748.

Council of Science Editors:

Muñiz Calvente M. The generalized local model: A methodology for probabilistic assessment of fracture under different failure criteria . [Doctoral Dissertation]. Universidad de Oviedo; 2017. Available from: http://hdl.handle.net/10651/40748

University of Texas – Austin

20. -7106-8163. The transition from subsonic to supersonic cracks.

Degree: PhD, Physics, 2016, University of Texas – Austin

URL: http://hdl.handle.net/2152/46608

► We present the full analytical solution for steady-state in-plane crack motion in a brittle triangular lattice. This allows quick numerical evaluation of solutions for very… (more)

▼ We present the full analytical solution for steady-state in-plane crack motion in a brittle triangular lattice. This allows quick numerical evaluation of solutions for very large systems, facilitating comparisons with continuum fracture theory. Cracks that propagate faster than the Rayleigh wave speed have been thought to be forbidden in the continuum theory, but clearly exist in lattice systems. Using our analytical methods, we examine in detail the motion of atoms around a crack tip as crack speed changes from subsonic to supersonic. Subsonic cracks feature displacement fields consistent with a stress intensity factor. For supersonic cracks, the stress intensity factor disappears. Subsonic cracks are characterized by small-amplitude, high-frequency oscillations in the vertical displacement of an atom along the crack line, while supersonic cracks have large-amplitude, low-frequency oscillations. Thus, while supersonic cracks are no less physical than subsonic cracks, the connection between microscopic and macroscopic behavior must be made in a different way. This is one reason supersonic cracks in tension had been thought not to exist. In continuum fracture theory, the energy flowing into the crack tip becomes negative or imaginary for crack speeds faster than the Rayleigh wave speed. This would suggest that supersonic cracks are not physically allowed. In response to this, we study the energy flow in our supersonic solutions in the lattice. First, we construct an energy flux vector in the lattice analogous to the Poynting vector in electromagnetism. This allows us to calculate the energy flow at each atom in the lattice. We find that there is positive energy flux into the crack tip for both subsonic and supersonic solutions in the lattice. Advisors/Committee Members: Marder, Michael P., 1960- (advisor), Hazeltine, Richard (committee member), Matzner, Richard (committee member), Morrison, Philip (committee member), Ravi-Chandar, Krishnaswamy (committee member).

Subjects/Keywords: Fracture; Crack; Mechanics

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APA (6^th Edition):

-7106-8163. (2016). The transition from subsonic to supersonic cracks. (Doctoral Dissertation). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/46608

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Chicago Manual of Style (16^th Edition):

-7106-8163. “The transition from subsonic to supersonic cracks.” 2016. Doctoral Dissertation, University of Texas – Austin. Accessed March 07, 2021. http://hdl.handle.net/2152/46608.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

MLA Handbook (7^th Edition):

-7106-8163. “The transition from subsonic to supersonic cracks.” 2016. Web. 07 Mar 2021.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Vancouver:

-7106-8163. The transition from subsonic to supersonic cracks. [Internet] [Doctoral dissertation]. University of Texas – Austin; 2016. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/2152/46608.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Council of Science Editors:

-7106-8163. The transition from subsonic to supersonic cracks. [Doctoral Dissertation]. University of Texas – Austin; 2016. Available from: http://hdl.handle.net/2152/46608

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

University of Hong Kong

21. Yang, Fan. An anisotropic model of damage mechanics for inelastic behaviors of fiber reinforced composite laminates.

Degree: 1992, University of Hong Kong

URL: http://hdl.handle.net/10722/34344

Subjects/Keywords: Fibrous composites - Fracture.; Fracture mechanics.; Laminated materials - Fracture.; Anisotropy.

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APA (6^th Edition):

Yang, F. (1992). An anisotropic model of damage mechanics for inelastic behaviors of fiber reinforced composite laminates. (Thesis). University of Hong Kong. Retrieved from http://hdl.handle.net/10722/34344

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Yang, Fan. “An anisotropic model of damage mechanics for inelastic behaviors of fiber reinforced composite laminates.” 1992. Thesis, University of Hong Kong. Accessed March 07, 2021. http://hdl.handle.net/10722/34344.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Yang, Fan. “An anisotropic model of damage mechanics for inelastic behaviors of fiber reinforced composite laminates.” 1992. Web. 07 Mar 2021.

Vancouver:

Yang F. An anisotropic model of damage mechanics for inelastic behaviors of fiber reinforced composite laminates. [Internet] [Thesis]. University of Hong Kong; 1992. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/10722/34344.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Yang F. An anisotropic model of damage mechanics for inelastic behaviors of fiber reinforced composite laminates. [Thesis]. University of Hong Kong; 1992. Available from: http://hdl.handle.net/10722/34344

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Columbia University

22. He, Xin. Fracture Mechanics and Failure of Multilayered Materials and Structures.

Degree: 2018, Columbia University

URL: https://doi.org/10.7916/D8WW8W70

► Multilayered materials and structures are of special interest to both academic researchers and industrial engineers as they have been used in an increasing number of… (more)

▼ Multilayered materials and structures are of special interest to both academic researchers and industrial engineers as they have been used in an increasing number of applications, such as micro- electromechanical system (MEMS) on polymer substrate, protective coating on metal structure for anti-corrosion, ceramic coating on metal substrate for abrasion resistance, thermal barrier coatings, metal or metal oxide coating on metal-coated polymer for reflectance tuning and protection, as well as laminated composites and structures, etc. However, the surface layer and joint interface are commonly prone to premature failures because of cracking and delamination due to their different thermal and mechanical properties. In return, the premature failures will affect the performance and structural integrity of the device and eventually cause the failure of the multilayered structures to perform their functions. Therefore, it is essential to understand the mechanical behavior and corresponding failure mechanisms of the multilayered systems. This Ph.D. dissertation focuses on the study of opening-mode fracture (OMF) behavior and interfacial delamination in different types of multilayered structures, such as the aluminum plate or wire with alumina protective coating, multilayered advanced polymeric reflectors, and asphalt pavements. In addition, another failure mechanism, i.e. the material degradation and aging, is also studied. Firstly, a two-dimensional (2D) elasoplastic fracture model in Cartesian coordinates is developed to study the OMF in the thin alumina film fully bonded to an aluminum plate undergoing large- scale yielding. The stress field in the coating layer is described by one section between two adjacent cracks. The 2D plane strain formulations are employed to analyze the elastic field in the thin film, while a one-dimensional (1D) linear hardening plastic model is applied to account for the large plastic deformations in the substrate under substantial yielding. An elastoplastic shear lag model is established to transfer the tensile stress in the substrate to the thin film. General formulations and explicit expressions of the elastic/elastoplastic solutions of the thin film/substrate system under different loading stages have been presented. The elastic field in the thin film is then verified with the finite element (FE) results. The fracture energy release rate (ERR) is calculated and corresponding elastoplastic fracture analysis is conducted. Experimental characterization is further conducted to validate the present model; the results show that this fracture modle can capture the fracture initiation, infilling, and saturation in the thin film successfully. This model has been extended to cylindrical coordinates, where the alumina coating is fully bonded to an aluminum wire/rod. Due to the axial symmetry, the proposed 2D elasoplastic fracture model has been reproduced in polar coordinates and be used to study the OMF behavior of alumina coating fully bonded to an aluminum wire. For the case where…

Subjects/Keywords: Composite materials – Delamination; Materials – Mechanical properties; Fracture mechanics; Layer structure (Solids)

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APA (6^th Edition):

He, X. (2018). Fracture Mechanics and Failure of Multilayered Materials and Structures. (Doctoral Dissertation). Columbia University. Retrieved from https://doi.org/10.7916/D8WW8W70

Chicago Manual of Style (16^th Edition):

He, Xin. “Fracture Mechanics and Failure of Multilayered Materials and Structures.” 2018. Doctoral Dissertation, Columbia University. Accessed March 07, 2021. https://doi.org/10.7916/D8WW8W70.

MLA Handbook (7^th Edition):

He, Xin. “Fracture Mechanics and Failure of Multilayered Materials and Structures.” 2018. Web. 07 Mar 2021.

Vancouver:

He X. Fracture Mechanics and Failure of Multilayered Materials and Structures. [Internet] [Doctoral dissertation]. Columbia University; 2018. [cited 2021 Mar 07]. Available from: https://doi.org/10.7916/D8WW8W70.

Council of Science Editors:

He X. Fracture Mechanics and Failure of Multilayered Materials and Structures. [Doctoral Dissertation]. Columbia University; 2018. Available from: https://doi.org/10.7916/D8WW8W70

Hong Kong University of Science and Technology

23. Uddin, Md. Nizam. Fracture properties of thin papers made from graphene oxide and carbon nanotubes.

Degree: 2013, Hong Kong University of Science and Technology

URL: http://repository.ust.hk/ir/Record/1783.1-92653 ; https://doi.org/10.14711/thesis-b1255124 ; http://repository.ust.hk/ir/bitstream/1783.1-92653/1/th_redirect.html

► Graphene - one atom thick sp² bonded carbon atoms arranged in a honeycomb lattice structure having exceptionally high in-plane electronic mobility, mechanical strength, and thermal… (more)

▼ Graphene - one atom thick sp² bonded carbon atoms arranged in a honeycomb lattice structure having exceptionally high in-plane electronic mobility, mechanical strength, and thermal conductivity - has attracted significant attention since its first discovery in 2004. Graphene oxides (GO), consisting of oxygen containing functional groups on its basal planes and edges and comprising of sp² and sp³ hybridized carbon atoms, provides well dispersed individual sheet in water and organic solvents. It is widely used as a building block in composites, mechanical actuators, nano-robots and paper-like materials. In recent years, GO-based paper materials have attracted much interest because of their outstanding strength, stiffness and high degree of flexibility. This paper-like material may be used as sealants, actuators, and bio-compatible substrates, flexible substrates with high chemical and thermal stability. The lateral dimensions of GO sheets have significant impact in controlling their properties and applications. The mechanical properties of GO papers have been extensively studied mostly in uni-axial tensile mode. However, no study has been carried out in other modes of deformation, such as shear. It is also important to differentiate the fracture mode or the conditions under which fracture occurs. When paper-like carbon materials are used in engineering applications, proper understanding their fracture toughness becomes essential. Like GO papers, papers made from carbon nanotubes (CNTs), or bucky papers, is a viable engineering material due to their useful mechanical, electrical and thermal and many other properties. The GO sheets in an aqueous media act as a surfactant because of their high aspect ratio and amphiphilic nature. This surfactant-like effect helps CNTs to be easily dispersed and absorbed onto the GO sheets in water and stable GO/CNT hybrid dispersions can be easily produced. This research focuses on the fracture behavior of GO papers, bucky papers and their hybrid papers in mode-I and mode-III loading. The effect of GO sheet size and CNT content on fracture and tearing toughness of the papers are evaluated using double-edge-notch tension (DENT) and trouser tear specimens, respectively. The tear studies of all paper specimens under the mode-III loading exhibited stick-slip tearing. The concept of linear elastic fracture mechanics (LEFM) is applied to measure the fracture toughness of GO papers. GO papers made from large sheets give higher fracture and tearing toughness than those made from small GO sheets. About 66% enhancement of fracture toughness and 70 % enhancement of tearing toughness are observed. Hybridization also enhances these two properties. Fracture and tearing toughness increased by 22% and 15% after hybridization with 5 wt% CNTs, compared to the unsorted GO papers. The failure mechanisms taking place during the fracture toughness and trouser tearing tests are identified from the microscopic examination of the fracture surfaces. Cleavage failure and CNT pullout…

Subjects/Keywords: Graphene ; Nanostructured materials ; Fracture mechanics ; Strength of materials

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APA (6^th Edition):

Uddin, M. N. (2013). Fracture properties of thin papers made from graphene oxide and carbon nanotubes. (Thesis). Hong Kong University of Science and Technology. Retrieved from http://repository.ust.hk/ir/Record/1783.1-92653 ; https://doi.org/10.14711/thesis-b1255124 ; http://repository.ust.hk/ir/bitstream/1783.1-92653/1/th_redirect.html

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Uddin, Md Nizam. “Fracture properties of thin papers made from graphene oxide and carbon nanotubes.” 2013. Thesis, Hong Kong University of Science and Technology. Accessed March 07, 2021. http://repository.ust.hk/ir/Record/1783.1-92653 ; https://doi.org/10.14711/thesis-b1255124 ; http://repository.ust.hk/ir/bitstream/1783.1-92653/1/th_redirect.html.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Uddin, Md Nizam. “Fracture properties of thin papers made from graphene oxide and carbon nanotubes.” 2013. Web. 07 Mar 2021.

Vancouver:

Uddin MN. Fracture properties of thin papers made from graphene oxide and carbon nanotubes. [Internet] [Thesis]. Hong Kong University of Science and Technology; 2013. [cited 2021 Mar 07]. Available from: http://repository.ust.hk/ir/Record/1783.1-92653 ; https://doi.org/10.14711/thesis-b1255124 ; http://repository.ust.hk/ir/bitstream/1783.1-92653/1/th_redirect.html.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Uddin MN. Fracture properties of thin papers made from graphene oxide and carbon nanotubes. [Thesis]. Hong Kong University of Science and Technology; 2013. Available from: http://repository.ust.hk/ir/Record/1783.1-92653 ; https://doi.org/10.14711/thesis-b1255124 ; http://repository.ust.hk/ir/bitstream/1783.1-92653/1/th_redirect.html

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Florida Atlantic University

24. Tauhiduzzaman, Mohammad. FACE/CORE DISBONDING FRACTURE OF HONEYCOMB CORE SANDWICH PANELS.

Degree: 2019, Florida Atlantic University

URL: http://fau.digital.flvc.org/islandora/object/fau:42217

►

The objective of the research presented in this thesis is to develop analysis and test procedures for the characterization of disbonding crack growth in a… (more)

Subjects/Keywords: Honeycomb structures; Fracture mechanics; Strength of materials; Airframes – Materials

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APA (6^th Edition):

Tauhiduzzaman, M. (2019). FACE/CORE DISBONDING FRACTURE OF HONEYCOMB CORE SANDWICH PANELS. (Thesis). Florida Atlantic University. Retrieved from http://fau.digital.flvc.org/islandora/object/fau:42217

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Tauhiduzzaman, Mohammad. “FACE/CORE DISBONDING FRACTURE OF HONEYCOMB CORE SANDWICH PANELS.” 2019. Thesis, Florida Atlantic University. Accessed March 07, 2021. http://fau.digital.flvc.org/islandora/object/fau:42217.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Tauhiduzzaman, Mohammad. “FACE/CORE DISBONDING FRACTURE OF HONEYCOMB CORE SANDWICH PANELS.” 2019. Web. 07 Mar 2021.

Vancouver:

Tauhiduzzaman M. FACE/CORE DISBONDING FRACTURE OF HONEYCOMB CORE SANDWICH PANELS. [Internet] [Thesis]. Florida Atlantic University; 2019. [cited 2021 Mar 07]. Available from: http://fau.digital.flvc.org/islandora/object/fau:42217.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Tauhiduzzaman M. FACE/CORE DISBONDING FRACTURE OF HONEYCOMB CORE SANDWICH PANELS. [Thesis]. Florida Atlantic University; 2019. Available from: http://fau.digital.flvc.org/islandora/object/fau:42217

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Michigan State University

25. Dutta, Abhishek. Exploiting design principles in nature to synthetic composites.

Degree: 2013, Michigan State University

URL: http://etd.lib.msu.edu/islandora/object/etd:1844

►

Thesis Ph. D. Michigan State University. Mechanical Engineering 2013.

The current need of technology demands the generation of light-weight, durable and energy efficient structural materials.… (more)

Subjects/Keywords: Composite materials – Fatigue; Composite materials – Fracture; Mechanical engineering; Mechanics

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APA (6^th Edition):

Dutta, A. (2013). Exploiting design principles in nature to synthetic composites. (Thesis). Michigan State University. Retrieved from http://etd.lib.msu.edu/islandora/object/etd:1844

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Dutta, Abhishek. “Exploiting design principles in nature to synthetic composites.” 2013. Thesis, Michigan State University. Accessed March 07, 2021. http://etd.lib.msu.edu/islandora/object/etd:1844.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Dutta, Abhishek. “Exploiting design principles in nature to synthetic composites.” 2013. Web. 07 Mar 2021.

Vancouver:

Dutta A. Exploiting design principles in nature to synthetic composites. [Internet] [Thesis]. Michigan State University; 2013. [cited 2021 Mar 07]. Available from: http://etd.lib.msu.edu/islandora/object/etd:1844.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Dutta A. Exploiting design principles in nature to synthetic composites. [Thesis]. Michigan State University; 2013. Available from: http://etd.lib.msu.edu/islandora/object/etd:1844

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Texas A&M University

26. Bafrali, Ruhi. Compressive response of impact-damaged composite tubes.

Degree: MS, civil engineering, 2012, Texas A&M University

URL: http://hdl.handle.net/1969.1/ETD-TAMU-1990-THESIS-B143

Subjects/Keywords: civil engineering.; Major civil engineering.; Materials - Compression testing.; Fracture mechanics.; Composite materials - Testing.

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APA (6^th Edition):

Bafrali, R. (2012). Compressive response of impact-damaged composite tubes. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/ETD-TAMU-1990-THESIS-B143

Chicago Manual of Style (16^th Edition):

Bafrali, Ruhi. “Compressive response of impact-damaged composite tubes.” 2012. Masters Thesis, Texas A&M University. Accessed March 07, 2021. http://hdl.handle.net/1969.1/ETD-TAMU-1990-THESIS-B143.

MLA Handbook (7^th Edition):

Bafrali, Ruhi. “Compressive response of impact-damaged composite tubes.” 2012. Web. 07 Mar 2021.

Vancouver:

Bafrali R. Compressive response of impact-damaged composite tubes. [Internet] [Masters thesis]. Texas A&M University; 2012. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-1990-THESIS-B143.

Council of Science Editors:

Bafrali R. Compressive response of impact-damaged composite tubes. [Masters Thesis]. Texas A&M University; 2012. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-1990-THESIS-B143

University of New Mexico

27. Chapman, Scott. Clarification of the notched beam Level II Testing Procedures of ACI 446 Committee Report 5.

Degree: Civil Engineering, 2012, University of New Mexico

URL: http://hdl.handle.net/1928/17420

► Concrete under tension exhibits a great degree of post-peak non-linearity. Current design codes assume the tensile strength of concrete to be negligible, which is not… (more)

Subjects/Keywords: Concrete beams – Testing; Concrete beams – Fatigue; Fracture mechanics.

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APA (6^th Edition):

Chapman, S. (2012). Clarification of the notched beam Level II Testing Procedures of ACI 446 Committee Report 5. (Masters Thesis). University of New Mexico. Retrieved from http://hdl.handle.net/1928/17420

Chicago Manual of Style (16^th Edition):

Chapman, Scott. “Clarification of the notched beam Level II Testing Procedures of ACI 446 Committee Report 5.” 2012. Masters Thesis, University of New Mexico. Accessed March 07, 2021. http://hdl.handle.net/1928/17420.

MLA Handbook (7^th Edition):

Chapman, Scott. “Clarification of the notched beam Level II Testing Procedures of ACI 446 Committee Report 5.” 2012. Web. 07 Mar 2021.

Vancouver:

Chapman S. Clarification of the notched beam Level II Testing Procedures of ACI 446 Committee Report 5. [Internet] [Masters thesis]. University of New Mexico; 2012. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/1928/17420.

Council of Science Editors:

Chapman S. Clarification of the notched beam Level II Testing Procedures of ACI 446 Committee Report 5. [Masters Thesis]. University of New Mexico; 2012. Available from: http://hdl.handle.net/1928/17420

University of Arizona

28. Glancy, John James, 1941-. A study of the fracture mechanism of concrete .

Degree: 1966, University of Arizona

URL: http://hdl.handle.net/10150/347580

Subjects/Keywords: Concrete – Testing.; Fracture mechanics.

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APA (6^th Edition):

Glancy, John James, 1. (1966). A study of the fracture mechanism of concrete . (Masters Thesis). University of Arizona. Retrieved from http://hdl.handle.net/10150/347580

Chicago Manual of Style (16^th Edition):

Glancy, John James, 1941-. “A study of the fracture mechanism of concrete .” 1966. Masters Thesis, University of Arizona. Accessed March 07, 2021. http://hdl.handle.net/10150/347580.

MLA Handbook (7^th Edition):

Glancy, John James, 1941-. “A study of the fracture mechanism of concrete .” 1966. Web. 07 Mar 2021.

Vancouver:

Glancy, John James 1. A study of the fracture mechanism of concrete . [Internet] [Masters thesis]. University of Arizona; 1966. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/10150/347580.

Council of Science Editors:

Glancy, John James 1. A study of the fracture mechanism of concrete . [Masters Thesis]. University of Arizona; 1966. Available from: http://hdl.handle.net/10150/347580

University of British Columbia

29. Adams, Roy Douglas. Fracture development in wood resulting from bending stresses and detected using the acoustic emission phenomenon.

Degree: Master of Forestry - MF, Forestry, 1969, University of British Columbia

URL: http://hdl.handle.net/2429/35534

► A new approach to the problem of failure prediction of wood components and structures is that of fracture mechanics. In order to implement this approach… (more)

▼ A new approach to the problem of failure prediction of wood components and structures is that of fracture mechanics. In order to implement this approach knowledge of flaw growth (or crack propagation) in wood subjected to various stress systems and environmental conditions is required. The extension of flaws is accompanied by the release of energy in the form of acoustic or stress wave emissions, which can be detected and have been found to be reliable indicators of crack growth. Using acoustic emissions as a measure, flaw growth was investigated in stressed bending specimens of three species. The test pieces contained a variety of knot configurations, seasoning checks and resin pockets. Three wood moisture contents were used; specimen size was 2-by-4-inch (nominal) cross section and 50-inch length. A detailed description of the system used for detecting, measuring and recording acoustic emissions is given. Emission activity was measured using an electronic counter. Simultaneous count, load and deflection measurements were recorded and count-deflection and load-deflection curves plotted. The association between acoustic emissions and crack growth is discussed. Four types of integrated count- deflection patterns were found, which generally exhibited two common features. Firstly, a rate change point, where the count rate increased rapidly, and secondly a count increase just prior to failure. The rate change point was approximately coincident with the proportional limit in the load-deflection curve, suggesting an association between elastic behaviour and microfailure development. Several qualitative relationships between the count and load curves are presented. A correlation between stable crack growth and the entire load-deflection curve is postulated. The presence of checks and resin pockets affected the microfailure pattern, shown by increased acoustical activity, without appreciably influencing modulus of rupture. Green specimens for the most part produced lower counts than drier ones. Also clear or essentially clear boards exhibited lower emission counts. Species differences were not apparent. The estimation of modulus of rupture employing parameters from the count-deflection curves is discussed and compared to that using modulus of elasticity. Precision of the prediction was not improved using count parameters. A method for determining the direction of crack propagation in a fractured bending member is described.

Subjects/Keywords: Fracture mechanics; Wood – Testing

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APA (6^th Edition):

Adams, R. D. (1969). Fracture development in wood resulting from bending stresses and detected using the acoustic emission phenomenon. (Masters Thesis). University of British Columbia. Retrieved from http://hdl.handle.net/2429/35534

Chicago Manual of Style (16^th Edition):

Adams, Roy Douglas. “Fracture development in wood resulting from bending stresses and detected using the acoustic emission phenomenon.” 1969. Masters Thesis, University of British Columbia. Accessed March 07, 2021. http://hdl.handle.net/2429/35534.

MLA Handbook (7^th Edition):

Adams, Roy Douglas. “Fracture development in wood resulting from bending stresses and detected using the acoustic emission phenomenon.” 1969. Web. 07 Mar 2021.

Vancouver:

Adams RD. Fracture development in wood resulting from bending stresses and detected using the acoustic emission phenomenon. [Internet] [Masters thesis]. University of British Columbia; 1969. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/2429/35534.

Council of Science Editors:

Adams RD. Fracture development in wood resulting from bending stresses and detected using the acoustic emission phenomenon. [Masters Thesis]. University of British Columbia; 1969. Available from: http://hdl.handle.net/2429/35534

Hong Kong University of Science and Technology

30. Chen, E. Study on concrete strength under uniaxial and biaxial loadings from the view of fracture mechanics.

Degree: 2011, Hong Kong University of Science and Technology

URL: http://repository.ust.hk/ir/Record/1783.1-7386 ; https://doi.org/10.14711/thesis-b1154860 ; http://repository.ust.hk/ir/bitstream/1783.1-7386/1/th_redirect.html

► Biaxial compression tests on cubic concrete specimens were performed on a newly designed triaxial machine. Specially designed steel brush platens were adopted in biaxial experiments… (more)

▼ Biaxial compression tests on cubic concrete specimens were performed on a newly designed triaxial machine. Specially designed steel brush platens were adopted in biaxial experiments to reduce the end friction in order to obtain real uniform compression state in the specimens. Concrete with different maximum aggregate sizes were tested for their biaxial compressive strength, with fracture energy and characteristic length examined at the same time. It was found that the biaxial compressive strength of concrete was intrinsically dependent on the fracture energy and characteristic length rather than the uniaxial strength. Therefore, by introducing the fracture parameters, a trend of biaxial failure envelope can be more accurately described than previous research in which the uniaxial strength was always taken as the basis for deriving the envelope. This finding may provide a more accurate design criterion based on fracture parameters in multiaxial problems. On the other hand, numerical simulation of concrete behavior under uniaxial tension, uniaxial compression and combined compression-tension was carried out based on a proposed local softening model by the nonlinear finite element software ATENA. Pure mode I crack was assumed under uniaxial tension and the equivalent wing crack system was employed for uniaxial compression and biaxial compression-tension. The local softening behavior was simulated by means of the interface material model in ATENA. The relationships among the uniaxial compressive strength, tensile strength and the fracture energy under tension were well reproduced compared with the empirical relations. This implies that the local softening law can be viewed as the linkage of these macroscopic properties. Numerical biaxial compressive-tensile strengths based on the local softening model also showed good agreement with available experimental results. Therefore, non-linear fracture mechanics with the local softening law at the sub-macro-scale seems to be suitable for analyzing concrete behaviors at the macro-scale.

Subjects/Keywords: Concrete – Fracture – Mathematical models ; Fracture mechanics

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

APA (6^th Edition):

Chen, E. (2011). Study on concrete strength under uniaxial and biaxial loadings from the view of fracture mechanics. (Thesis). Hong Kong University of Science and Technology. Retrieved from http://repository.ust.hk/ir/Record/1783.1-7386 ; https://doi.org/10.14711/thesis-b1154860 ; http://repository.ust.hk/ir/bitstream/1783.1-7386/1/th_redirect.html

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Chen, E. “Study on concrete strength under uniaxial and biaxial loadings from the view of fracture mechanics.” 2011. Thesis, Hong Kong University of Science and Technology. Accessed March 07, 2021. http://repository.ust.hk/ir/Record/1783.1-7386 ; https://doi.org/10.14711/thesis-b1154860 ; http://repository.ust.hk/ir/bitstream/1783.1-7386/1/th_redirect.html.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Chen, E. “Study on concrete strength under uniaxial and biaxial loadings from the view of fracture mechanics.” 2011. Web. 07 Mar 2021.

Vancouver:

Chen E. Study on concrete strength under uniaxial and biaxial loadings from the view of fracture mechanics. [Internet] [Thesis]. Hong Kong University of Science and Technology; 2011. [cited 2021 Mar 07]. Available from: http://repository.ust.hk/ir/Record/1783.1-7386 ; https://doi.org/10.14711/thesis-b1154860 ; http://repository.ust.hk/ir/bitstream/1783.1-7386/1/th_redirect.html.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Chen E. Study on concrete strength under uniaxial and biaxial loadings from the view of fracture mechanics. [Thesis]. Hong Kong University of Science and Technology; 2011. Available from: http://repository.ust.hk/ir/Record/1783.1-7386 ; https://doi.org/10.14711/thesis-b1154860 ; http://repository.ust.hk/ir/bitstream/1783.1-7386/1/th_redirect.html

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

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