subject:(Failure Mechanism Based Failure Criterion)

Indian Institute of Science

1. Naik, G Narayana. Development And Design Optimization Of Laminated Composite Structures Using Failure Mechanism Based Failure Criterion.

Degree: PhD, Faculty of Enginering, 2009, Indian Institute of Science

URL: http://etd.iisc.ac.in/handle/2005/469

► In recent years, use of composites is increasing in most fields of engineering such as aerospace, automotive, civil construction, marine, prosthetics, etc., because of its… (more)

Subjects/Keywords: Structural Analysis; Laminated Composites; Composites - Design Optimization; Failure Mechanism Based Failure Criterion; Composite Laminates - Failure Mechanism Based Design; Vector Evaluated Particle Swarm Optimization; Genetic Algorithms; Composite Laminates; Composite Laminae; Composite Structures; Design Optimization; Failure Criterion; Structural Engineering

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APA (6^th Edition):

Naik, G. N. (2009). Development And Design Optimization Of Laminated Composite Structures Using Failure Mechanism Based Failure Criterion. (Doctoral Dissertation). Indian Institute of Science. Retrieved from http://etd.iisc.ac.in/handle/2005/469

Chicago Manual of Style (16^th Edition):

Naik, G Narayana. “Development And Design Optimization Of Laminated Composite Structures Using Failure Mechanism Based Failure Criterion.” 2009. Doctoral Dissertation, Indian Institute of Science. Accessed March 07, 2021. http://etd.iisc.ac.in/handle/2005/469.

MLA Handbook (7^th Edition):

Naik, G Narayana. “Development And Design Optimization Of Laminated Composite Structures Using Failure Mechanism Based Failure Criterion.” 2009. Web. 07 Mar 2021.

Vancouver:

Naik GN. Development And Design Optimization Of Laminated Composite Structures Using Failure Mechanism Based Failure Criterion. [Internet] [Doctoral dissertation]. Indian Institute of Science; 2009. [cited 2021 Mar 07]. Available from: http://etd.iisc.ac.in/handle/2005/469.

Council of Science Editors:

Naik GN. Development And Design Optimization Of Laminated Composite Structures Using Failure Mechanism Based Failure Criterion. [Doctoral Dissertation]. Indian Institute of Science; 2009. Available from: http://etd.iisc.ac.in/handle/2005/469

Delft University of Technology

2. Van Loon, P.S.P. (author). A cost optimal design of a sea dike: Using probabilistic methods and flexibility in the distribution of the total failure probability over the various failure mechanisms.

Degree: 2014, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:e8d86c94-e2fd-4a4e-bf48-eb4e07060c0a

►

During this research a method is developed for finding the cost optimal design of a sea dike when a probabilistic method is being applied and… (more)

Subjects/Keywords: probabilistic; failure mechanism; sea dike

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APA (6^th Edition):

Van Loon, P. S. P. (. (2014). A cost optimal design of a sea dike: Using probabilistic methods and flexibility in the distribution of the total failure probability over the various failure mechanisms. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:e8d86c94-e2fd-4a4e-bf48-eb4e07060c0a

Chicago Manual of Style (16^th Edition):

Van Loon, P S P (author). “A cost optimal design of a sea dike: Using probabilistic methods and flexibility in the distribution of the total failure probability over the various failure mechanisms.” 2014. Masters Thesis, Delft University of Technology. Accessed March 07, 2021. http://resolver.tudelft.nl/uuid:e8d86c94-e2fd-4a4e-bf48-eb4e07060c0a.

MLA Handbook (7^th Edition):

Van Loon, P S P (author). “A cost optimal design of a sea dike: Using probabilistic methods and flexibility in the distribution of the total failure probability over the various failure mechanisms.” 2014. Web. 07 Mar 2021.

Vancouver:

Van Loon PSP(. A cost optimal design of a sea dike: Using probabilistic methods and flexibility in the distribution of the total failure probability over the various failure mechanisms. [Internet] [Masters thesis]. Delft University of Technology; 2014. [cited 2021 Mar 07]. Available from: http://resolver.tudelft.nl/uuid:e8d86c94-e2fd-4a4e-bf48-eb4e07060c0a.

Council of Science Editors:

Van Loon PSP(. A cost optimal design of a sea dike: Using probabilistic methods and flexibility in the distribution of the total failure probability over the various failure mechanisms. [Masters Thesis]. Delft University of Technology; 2014. Available from: http://resolver.tudelft.nl/uuid:e8d86c94-e2fd-4a4e-bf48-eb4e07060c0a

Addis Ababa University

3. Yosef, Bekele. ailure analysis of signaling Failure analysis of signalingFailure analysis of signaling Failure analysis of signaling system of Addis Ababa system of Addis Ababasystem of Addis Ababa system of Addis Ababa – Light Rail Transit Light Rail TransitLight Rail Transit Light Rail Transit .

Degree: 2015, Addis Ababa University

URL: http://etd.aau.edu.et/dspace/handle/123456789/7455

► Railway signaling system is one of the most important parts of the many which make up the railway system. It is the vital control system… (more)

Subjects/Keywords: Failure modes; Failure propagation; Model based failure analysis; HiP-HOPS

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APA (6^th Edition):

Yosef, B. (2015). ailure analysis of signaling Failure analysis of signalingFailure analysis of signaling Failure analysis of signaling system of Addis Ababa system of Addis Ababasystem of Addis Ababa system of Addis Ababa – Light Rail Transit Light Rail TransitLight Rail Transit Light Rail Transit . (Thesis). Addis Ababa University. Retrieved from http://etd.aau.edu.et/dspace/handle/123456789/7455

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):

Yosef, Bekele. “ailure analysis of signaling Failure analysis of signalingFailure analysis of signaling Failure analysis of signaling system of Addis Ababa system of Addis Ababasystem of Addis Ababa system of Addis Ababa – Light Rail Transit Light Rail TransitLight Rail Transit Light Rail Transit .” 2015. Thesis, Addis Ababa University. Accessed March 07, 2021. http://etd.aau.edu.et/dspace/handle/123456789/7455.

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

MLA Handbook (7^th Edition):

Yosef, Bekele. “ailure analysis of signaling Failure analysis of signalingFailure analysis of signaling Failure analysis of signaling system of Addis Ababa system of Addis Ababasystem of Addis Ababa system of Addis Ababa – Light Rail Transit Light Rail TransitLight Rail Transit Light Rail Transit .” 2015. Web. 07 Mar 2021.

Vancouver:

Yosef B. ailure analysis of signaling Failure analysis of signalingFailure analysis of signaling Failure analysis of signaling system of Addis Ababa system of Addis Ababasystem of Addis Ababa system of Addis Ababa – Light Rail Transit Light Rail TransitLight Rail Transit Light Rail Transit . [Internet] [Thesis]. Addis Ababa University; 2015. [cited 2021 Mar 07]. Available from: http://etd.aau.edu.et/dspace/handle/123456789/7455.

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

Council of Science Editors:

Yosef B. ailure analysis of signaling Failure analysis of signalingFailure analysis of signaling Failure analysis of signaling system of Addis Ababa system of Addis Ababasystem of Addis Ababa system of Addis Ababa – Light Rail Transit Light Rail TransitLight Rail Transit Light Rail Transit . [Thesis]. Addis Ababa University; 2015. Available from: http://etd.aau.edu.et/dspace/handle/123456789/7455

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

4. Mattila, Toni. Reliability of High-Density Lead-Free Solder Interconnections under Thermal Cycling and Mechanical Shock Loading.

Degree: 2005, Helsinki University of Technology

URL: http://lib.tkk.fi/Diss/2005/isbn9512279843/

►

The reliability of portable electronic devices was studied by applying standardized test procedures for test vehicles that represent the technologies and lead-free materials typically used… (more)

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The reliability of portable electronic devices was studied by applying standardized test procedures for test vehicles that represent the technologies and lead-free materials typically used in novel portable products. Thermal cycling and drop testing are commonly used because they reveal the failure modes and mechanisms that portable devices experience in operational environments. A large number of component boards were assembled in a full-scale production line to enable proper statistical and fractographic analyses. The test boards were assembled with different printed wiring board protective coatings, component under bump metallizations, and solder pad structures. The component boards were tested and the times-to-failure of the various combinations were statistically analyzed. The reliability data were also analyzed by the Weibull method, and the characteristic lifetimes and shape parameters were calculated. The failure modes under the thermal cycling, where solder interconnections fail by cracking through the bulk solder, were different from those observed in the drop tests, where cracks propagate along the intermetallic layers on either side of the interconnections. Under the thermomechanical loading the as-soldered microstructure, which is composed of only a few large eutectic colonies, undergoes local recrystallization that produces networks of grain boundaries along which the intergranular cracks damage solder interconnections. Under the mechanical shock loading, in turn, the strain–rate hardening of the solder material forces cracks to propagate in the intermetallic layers instead of the bulk solder. It was found that the reliability of solder interconnections can improve when the component boards have undergone thermal cycles before drop testing. The high-angle boundaries between the recrystallized grains generated during thermal cycling provide paths along which cracks can propagate but the propagation through the bulk solder consumes more energy than the propagation through brittle intermetallic layers. On the other hand, prolonged lifetime at elevated temperatures can reduce the drop test reliability considerably due to the formation of Kirkendall voids in the Cu3Sn intermetallic layers.

Report series / Helsinki University of Technology, Laboratory of Electronics Production Technology, ISSN 1457-0440; 13

Advisors/Committee Members: Helsinki University of Technology, Department of Electrical and Communications Engineering, Laboratory of Electronics Production Technology.

Subjects/Keywords: drop testing; failure mechanism; failure mode; chip-scale package; lead-free

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APA (6^th Edition):

Mattila, T. (2005). Reliability of High-Density Lead-Free Solder Interconnections under Thermal Cycling and Mechanical Shock Loading. (Thesis). Helsinki University of Technology. Retrieved from http://lib.tkk.fi/Diss/2005/isbn9512279843/

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):

Mattila, Toni. “Reliability of High-Density Lead-Free Solder Interconnections under Thermal Cycling and Mechanical Shock Loading.” 2005. Thesis, Helsinki University of Technology. Accessed March 07, 2021. http://lib.tkk.fi/Diss/2005/isbn9512279843/.

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

MLA Handbook (7^th Edition):

Mattila, Toni. “Reliability of High-Density Lead-Free Solder Interconnections under Thermal Cycling and Mechanical Shock Loading.” 2005. Web. 07 Mar 2021.

Vancouver:

Mattila T. Reliability of High-Density Lead-Free Solder Interconnections under Thermal Cycling and Mechanical Shock Loading. [Internet] [Thesis]. Helsinki University of Technology; 2005. [cited 2021 Mar 07]. Available from: http://lib.tkk.fi/Diss/2005/isbn9512279843/.

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

Council of Science Editors:

Mattila T. Reliability of High-Density Lead-Free Solder Interconnections under Thermal Cycling and Mechanical Shock Loading. [Thesis]. Helsinki University of Technology; 2005. Available from: http://lib.tkk.fi/Diss/2005/isbn9512279843/

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

University of Michigan

5. Yerramalli, Chandra Sekher. A mechanism based modeling approach to failure in fiber reinforced composites.

Degree: PhD, Mechanical engineering, 2003, University of Michigan

URL: http://hdl.handle.net/2027.42/123500

► The increasing use of fiber reinforced polymer composites (FRPC) in civil and military applications has made it imperative that the behavior of FRPC be understood… (more)

▼ The increasing use of fiber reinforced polymer composites (FRPC) in civil and military applications has made it imperative that the behavior of FRPC be understood under a variety of loading conditions. It is known that the compressive load carrying capacity of FRPC is low compared to its tensile load carrying capacity. Thus, the compressive behavior of FRPC has been a limiting factor in the design of FRPC structures. In the current work, the compressive behavior of FRPC has been studied with an aim to identify and understand the important parameters affecting the compressive strength and failure mechanisms in FRPC, particularly under combined stress states. The purpose is to establish compressive strength degradation (or enhancement) in the presence of combined stress states. Results from experiments have led to the development of a mechanism based failure model, based on the principles of fracture mechanics for the splitting failure of FRPC. A mechanics model has been developed for both pure compression and combined compression-torsion loading. The predictions of the model were found to compare favorably with experimental data obtained from glass and carbon FRPC under pure compression and combined compression-torsion loading. A 3D finite element simulation of a representative cylindrical section of the composite was performed. The results indicated the importance of fiber diameter on the predicted compressive response of the composite. It also indicated the possibilities of fiber breakage under axial loading as a cause for the initiation of kinking in case of small diameter fiber reinforced composites. Pure compression tests were also conducted on hybrid (glass/carbon) composites under static and dynamic loading conditions. The static compressive strength of hybrid composites shows a non-monotonic behavior with respect to the hybrid ratio. The compressive strength first decreases and then increases as we approach either pure carbon or pure glass composites. The hybrid composites tested show an increase in strength with strain rate at all hybrid ratios. Based on the above experiments/analysis a non-dimensional number has been derived to a priori identify the composite failure mechanism, and thus aid the accurate prediction of composite compressive strength. Advisors/Committee Members: Waas, Anthony M. (advisor).

Subjects/Keywords: Approach; Based; Compression; Failure; Fiber-reinforced Composites; Mechanism; Modeling

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APA (6^th Edition):

Yerramalli, C. S. (2003). A mechanism based modeling approach to failure in fiber reinforced composites. (Doctoral Dissertation). University of Michigan. Retrieved from http://hdl.handle.net/2027.42/123500

Chicago Manual of Style (16^th Edition):

Yerramalli, Chandra Sekher. “A mechanism based modeling approach to failure in fiber reinforced composites.” 2003. Doctoral Dissertation, University of Michigan. Accessed March 07, 2021. http://hdl.handle.net/2027.42/123500.

MLA Handbook (7^th Edition):

Yerramalli, Chandra Sekher. “A mechanism based modeling approach to failure in fiber reinforced composites.” 2003. Web. 07 Mar 2021.

Vancouver:

Yerramalli CS. A mechanism based modeling approach to failure in fiber reinforced composites. [Internet] [Doctoral dissertation]. University of Michigan; 2003. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/2027.42/123500.

Council of Science Editors:

Yerramalli CS. A mechanism based modeling approach to failure in fiber reinforced composites. [Doctoral Dissertation]. University of Michigan; 2003. Available from: http://hdl.handle.net/2027.42/123500

Cranfield University

6. Xu, Rongxin. Optimal design of a composite wing structure for a flying-wing aircraft subject to multi-constraint.

Degree: MSc by Research, 2012, Cranfield University

URL: http://dspace.lib.cranfield.ac.uk/handle/1826/7290

► This thesis presents a research project and results of design and optimization of a composite wing structure for a large aircraft in flying wing configuration.… (more)

Subjects/Keywords: Structural Design; Multidisciplinary Optimization; Finite Element; Aeroelasticity; Flutter; Failure Criterion; NASTRAN

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

APA (6^th Edition):

Xu, R. (2012). Optimal design of a composite wing structure for a flying-wing aircraft subject to multi-constraint. (Masters Thesis). Cranfield University. Retrieved from http://dspace.lib.cranfield.ac.uk/handle/1826/7290

Chicago Manual of Style (16^th Edition):

Xu, Rongxin. “Optimal design of a composite wing structure for a flying-wing aircraft subject to multi-constraint.” 2012. Masters Thesis, Cranfield University. Accessed March 07, 2021. http://dspace.lib.cranfield.ac.uk/handle/1826/7290.

MLA Handbook (7^th Edition):

Xu, Rongxin. “Optimal design of a composite wing structure for a flying-wing aircraft subject to multi-constraint.” 2012. Web. 07 Mar 2021.

Vancouver:

Xu R. Optimal design of a composite wing structure for a flying-wing aircraft subject to multi-constraint. [Internet] [Masters thesis]. Cranfield University; 2012. [cited 2021 Mar 07]. Available from: http://dspace.lib.cranfield.ac.uk/handle/1826/7290.

Council of Science Editors:

Xu R. Optimal design of a composite wing structure for a flying-wing aircraft subject to multi-constraint. [Masters Thesis]. Cranfield University; 2012. Available from: http://dspace.lib.cranfield.ac.uk/handle/1826/7290

Delft University of Technology

7. Van Hoorn, N. (author). Multiscale Fracture Simulations for Composite Materials.

Degree: 2016, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:fdfd2c25-049c-4c67-a5dc-bad4b8ed1be2

►

For failure in composite materials the fracture mechanisms at the microscopic scale, such as matrix cracking, fiber cracking, fiber-matrix debonding or combinations thereof determine the… (more)

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For failure in composite materials the fracture mechanisms at the microscopic scale, such as matrix cracking, fiber cracking, fiber-matrix debonding or combinations thereof determine the growth of crack at the macroscopic scale. The goal is to develop a simple failure criterion in terms of a bilinear Traction-Separation Law (TSL) for unidirectional Carbon-Fiber Reinforced Plastic (CFRP) that represents the crack nucleation and evolution at the macroscopic scale. The microscopic fracture mechanisms are incorporated by calibrating this bilinear TSL for arbitrary loading conditions and material properties. The calibration is performed by an extensive parametric study on 2D a Representative Volume Element (RVE) in ABAQUS. For the parametric study five load cases are studied: uni-axial extension (pure mode I), simple shear (pure mode II) and three mixed loading cases. Fracture is simulated inserting cohesive elements along the boundaries of all bulk elements. The effect of five variables was studied: interface cohesive strength, fiber cohesive strength, interface fracture energy, fiber fracture energy and fiber volume fraction. An average of four realizations, i.e. fiber distributions, resulted in an effective TSL that represents the fracture behavior of the RVE. The resulting effective TSL is approximated by a bilinear TSL that has three parameters: initial slope, cohesive strength (peak) and fracture energy (area). Using the results of the parametric study a correlation is performed for these three parameters. First, the mode I and II parameters are correlated using the results of the uni-axial extension and simple shear load case. Secondly, the three bilinear TSL parameters dependence on the mode mixity is correlated using one of the mixed loading cases. As a result of this procedure simple closed-form expressions are established that can determine the macroscopic fracture mechanism, in terms of a bilinear TSL, as a function of the microscopic properties.

Aerospace Structures and Computational Mechanics

Aerospace Engineering

Advisors/Committee Members: Turteltaub, S.R. (mentor).

Subjects/Keywords: fracture; multiscale; failure criterion; representative volume element; ABAQUS; cohesive elements

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APA (6^th Edition):

Van Hoorn, N. (. (2016). Multiscale Fracture Simulations for Composite Materials. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:fdfd2c25-049c-4c67-a5dc-bad4b8ed1be2

Chicago Manual of Style (16^th Edition):

Van Hoorn, N (author). “Multiscale Fracture Simulations for Composite Materials.” 2016. Masters Thesis, Delft University of Technology. Accessed March 07, 2021. http://resolver.tudelft.nl/uuid:fdfd2c25-049c-4c67-a5dc-bad4b8ed1be2.

MLA Handbook (7^th Edition):

Van Hoorn, N (author). “Multiscale Fracture Simulations for Composite Materials.” 2016. Web. 07 Mar 2021.

Vancouver:

Van Hoorn N(. Multiscale Fracture Simulations for Composite Materials. [Internet] [Masters thesis]. Delft University of Technology; 2016. [cited 2021 Mar 07]. Available from: http://resolver.tudelft.nl/uuid:fdfd2c25-049c-4c67-a5dc-bad4b8ed1be2.

Council of Science Editors:

Van Hoorn N(. Multiscale Fracture Simulations for Composite Materials. [Masters Thesis]. Delft University of Technology; 2016. Available from: http://resolver.tudelft.nl/uuid:fdfd2c25-049c-4c67-a5dc-bad4b8ed1be2

University of Waterloo

8. Bardelcik, Alexander. Effect of Pre-Bending and Hydroforming Parameters on the Formability of Advanced High Strength Steel Tube.

Degree: 2006, University of Waterloo

URL: http://hdl.handle.net/10012/2829

► With increasing fuel costs and the current drive to reduce greenhouse gas emissions and fuel consumption, a need to reduce vehicle weight is apparent. Weight… (more)

▼ With increasing fuel costs and the current drive to reduce greenhouse gas emissions and fuel consumption, a need to reduce vehicle weight is apparent. Weight reduction can be achieved by replacing conventionally stamped structural members with hydroformed parts. The weight reduction can be further enhanced by reducing the thickness of the hydroformed members through the use of advanced high strength steel (AHSS). A primary limitation in hydroforming AHSS, is the limited ductility or formability of these materials. This limitation becomes acute in multi-stage forming operations in which strain path changes become large making it difficult to predict formability. Thus, the focus of the current work is to study the effects of pre-bending on the subsequent hydroformability of Dual-Phase DP600 steel tubes. As part of this effort, the effect of key bending and hydroforming process parameters, bending boost and hydroforming end-feed, have been studied in a parametric fashion. Multi-step pre-bending and hydroforming experiments were performed on 76. 2 mm (3. 0") OD tubes with a wall-thickness of 1. 85mm (DP600). Experiments were also performed on 1. 74mm Interstitial Free (IF) steel tube, which provided a low strength, high formability baseline material for comparison purposes. A fully instrumented servo-hydraulic mandrel-rotary draw tube bender was used in the pre-bending experiments in which various levels of boost were applied. The results showed that increased boost reduced the major (tensile) strain and thinning at the outside of the bend. At the inside of the bend, the compressive minor strain became larger and thickening increased. Hydroforming of the straight and pre-bent tubes was conducted using various levels of load-control end-feed (EF). For both straight and pre-bend tube hydroforming, an increase in hydroforming EF resulted in increased burst pressure and corner-fill expansion (CFE). The effect of bending boost on CFE was also measured. For a given hydroforming EF case, a tube bent with greater boost achieved a higher burst pressure and consequently a greater CFE which increased the hydroformability of the material. Pre-bending was shown to consume a considerable amount of the formability of the tube in the hydroforming experiments. For the same EF case, the pre-bent tubes could only achieve a fraction of the straight tube CFE at burst. The pre-bending and hydroforming experiments were complimented by finite element simulation in the hope of providing additional insight into these processes. The finite element (FE) models were able to accurately predict the strain and thickness changes imposed during pre-bending. The models were able to accurately predict the CFE, EF displacement, and strain and thickness distributions after hydroforming. The extended stress-based forming limit curve (XSFLC) failure criterion was applied to predict failure (onset of necking) during hydroforming, which was…

Subjects/Keywords: Mechanical Engineering; hydroforming; formability; high strength steel; dual phase steel; interstitial free steel; finite element; friction; twist compression test; tube bending; end-feed; failure criterion; stress-based failure criterion; extended stress-based failure criterion

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

APA (6^th Edition):

Bardelcik, A. (2006). Effect of Pre-Bending and Hydroforming Parameters on the Formability of Advanced High Strength Steel Tube. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/2829

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):

Bardelcik, Alexander. “Effect of Pre-Bending and Hydroforming Parameters on the Formability of Advanced High Strength Steel Tube.” 2006. Thesis, University of Waterloo. Accessed March 07, 2021. http://hdl.handle.net/10012/2829.

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

MLA Handbook (7^th Edition):

Bardelcik, Alexander. “Effect of Pre-Bending and Hydroforming Parameters on the Formability of Advanced High Strength Steel Tube.” 2006. Web. 07 Mar 2021.

Vancouver:

Bardelcik A. Effect of Pre-Bending and Hydroforming Parameters on the Formability of Advanced High Strength Steel Tube. [Internet] [Thesis]. University of Waterloo; 2006. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/10012/2829.

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

Council of Science Editors:

Bardelcik A. Effect of Pre-Bending and Hydroforming Parameters on the Formability of Advanced High Strength Steel Tube. [Thesis]. University of Waterloo; 2006. Available from: http://hdl.handle.net/10012/2829

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

9. Krishnaveni A. Probabilistic fracture mechanics studies in the reliable design of pressure vessels;.

Degree: Reliable design of pressure vessels, 2014, Anna University

URL: http://shodhganga.inflibnet.ac.in/handle/10603/17167

►

In recent years, Probabilistic Fracture Mechanics (PFM) has becoming newlinean increasingly popular for realistic evaluation of fracture response and newlinereliability of cracked structures. The traditional… (more)

▼

In recent years, Probabilistic Fracture Mechanics (PFM) has becoming newlinean increasingly popular for realistic evaluation of fracture response and newlinereliability of cracked structures. The traditional approach to safety assessment newlineand design lies in a deterministic model in which safety factors are usually newlineassigned from heuristic and arbitrary decisions to handle the uncertainties. newlineUntil now, there is no straight-forward universal method to appropriately newlinedefine the safety factor. Use of the arbitrary safety factor is prone to reach newlinesolutions which are too conservative and over redundant that results in newlineadditional weight of the component and costs penalty. Hence there is need to newlinedevelop analytical methods to tackle the uncertainties systematically and newlinerationally during design. PFM provides a more rational way of describing the newlineactual behaviour and reliability of the structures than the traditional deterministic models. Using PFM, one can incorporate statistical uncertainties newlinein engineering design and evaluation. A realistic evaluation of structural newlineperformance can be achieved only if the uncertainty in structural loads, flaw newlinesizes and material properties are considered. newlineThe PFM analysis of an engineering system is concerned with newlinefinding a design such that safe operating condition is obtained while ensuring newlinethat the system reliability is within an acceptable limit. From the detailed newlineliterature review, it is found that the probabilistic failure assessment of newlineunflawed and flawed cylindrical pressure vessel containing axial through and newlinesurface cracks in the aerospace applications are scarcely reported. In this study, the probabilistic failure assessment methodology has been proposed newlineand implemented for the prediction of safe operating pressure for the newlineunflawed high strength steel pressure vessel using various failure pressure newlineprediction equations.

References p.157-169

Advisors/Committee Members: Christopher T.

Subjects/Keywords: Mechanical Engineering; Modified Two Parameter Fracture Criterion; Monte-Carlo Simulation; Probabilistic Design System; Probabilistic Failure Analysis; Probabilistic Fracture Mechanics; Reliability-Based Design

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APA (6^th Edition):

A, K. (2014). Probabilistic fracture mechanics studies in the reliable design of pressure vessels;. (Thesis). Anna University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/17167

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):

A, Krishnaveni. “Probabilistic fracture mechanics studies in the reliable design of pressure vessels;.” 2014. Thesis, Anna University. Accessed March 07, 2021. http://shodhganga.inflibnet.ac.in/handle/10603/17167.

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

MLA Handbook (7^th Edition):

A, Krishnaveni. “Probabilistic fracture mechanics studies in the reliable design of pressure vessels;.” 2014. Web. 07 Mar 2021.

Vancouver:

A K. Probabilistic fracture mechanics studies in the reliable design of pressure vessels;. [Internet] [Thesis]. Anna University; 2014. [cited 2021 Mar 07]. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/17167.

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

Council of Science Editors:

A K. Probabilistic fracture mechanics studies in the reliable design of pressure vessels;. [Thesis]. Anna University; 2014. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/17167

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

Macquarie University

10. Karami, Md. Jamil Hasan. An extension of model selection curves framework to accelerated failure time models.

Degree: 2017, Macquarie University

URL: http://hdl.handle.net/1959.14/1261436

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Empirical thesis.

Bibliography: pages 147-154.

1. Introduction – 2. Accelerated failure time models for survival analysis – 3. Model selection framework – 4. Simulation study… (more)

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Empirical thesis.

Bibliography: pages 147-154.

1. Introduction – 2. Accelerated failure time models for survival analysis – 3. Model selection framework – 4. Simulation study – 5. A tool in R for AFT model selection – 6. A case study using the model selection framework – 7. Conclusion – Appendices – Bibliography.

In most existing model selection criteria, a constant penalty multiplier is usually paired with a penalty function. A model selection criterion based on a single value of penalty multiplier, such as Akaike information criterion (AIC) and Bayesian information criterion (BIC), can be "unstable" as a different model may be selected if the penalty multiplier changes even by a small arbitrary amount. This thesis extends a recently developed model selection approach for (generalised) linear models, known as model selection curves (MSC), to accelerated failure time (AFT) models for survival data. In this approach, penalty multiplier in a predetermined range, instead of a single value, is considered. Model selection criteria based on this approach are thus considered more stable as the selected model is the least likely not to be selected even when the penalty multiplier changes. In addition to the two recently introduced longest cathetus criterion and longest hypotenuse criterion, a new criterion, called the triangle area criterion, is proposed in this thesis. Under some conditions, these three criteria are consistent in selecting a specified AFT model, similar to BIC. It is shown that the consistency result seems to hold even when sample size is only reasonably large using simulations. A model selection framework including these three MSC based criteria, as well as BIC and AIC, is proposed for AFT models of survival data.

The framework was investigated through simulations considering survival data of various sizes and censoring proportions from different specified models. Moreover, the performance of those model selection criteria based on the MSC was examined in comparison to AIC and BIC. The results indicate that those criteria have the potential to outperform AIC and BIC in selecting the correct model. The model selection framework has also been applied to several real world survival data. A tool in R program is developed to visualise the results from applying the framework.

1 online resource (xviii, 154 pages) graphs, tables

Advisors/Committee Members: Macquarie University. Department of Statistics.

Subjects/Keywords: Stochastic models; Failure time data analysis; model selection curves; triangle area criterion; longest cathetus criterion; longest hypotenuse criterion; accelerated failure time model; survival analysis

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APA (6^th Edition):

Karami, M. J. H. (2017). An extension of model selection curves framework to accelerated failure time models. (Doctoral Dissertation). Macquarie University. Retrieved from http://hdl.handle.net/1959.14/1261436

Chicago Manual of Style (16^th Edition):

Karami, Md Jamil Hasan. “An extension of model selection curves framework to accelerated failure time models.” 2017. Doctoral Dissertation, Macquarie University. Accessed March 07, 2021. http://hdl.handle.net/1959.14/1261436.

MLA Handbook (7^th Edition):

Karami, Md Jamil Hasan. “An extension of model selection curves framework to accelerated failure time models.” 2017. Web. 07 Mar 2021.

Vancouver:

Karami MJH. An extension of model selection curves framework to accelerated failure time models. [Internet] [Doctoral dissertation]. Macquarie University; 2017. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/1959.14/1261436.

Council of Science Editors:

Karami MJH. An extension of model selection curves framework to accelerated failure time models. [Doctoral Dissertation]. Macquarie University; 2017. Available from: http://hdl.handle.net/1959.14/1261436

University of Canterbury

11. Lo, Reuben Bing Quan. A multidisciplinary engineering geological investigation of cliff collapse at Redcliffs in the 22nd February and 13 June 2011 earthquakes.

Degree: MS, Engineering Geology, 2013, University of Canterbury

URL: http://dx.doi.org/10.26021/7917

► The collapse of Redcliffs’ cliff in the 22 February 2011 and 13 June 2011 earthquakes were the first times ever a major failure incident occurred… (more)

▼ The collapse of Redcliffs’ cliff in the 22 February 2011 and 13 June 2011 earthquakes were the first times ever a major failure incident occurred at Redcliffs in approximately 6000 years. This master’s thesis is a multidisciplinary engineering geological investigation sought to study these particular failure incidents, focusing on collecting the data necessary to explain the cause and effect of the cliff collapsing in the event of two major earthquakes. This study provides quantitative and qualitative data about the geotechnical attributes and engineering geological nature of the sea-cut cliff located at Redcliffs. Results from surveying the geology of Redcliffs show that the exposed lithology of the cliff face is a variably jointed rock body of welded and (relatively intact) unwelded ignimbrite, a predominantly massive unit of brecciated tuff, and a covering of wind-blown loess and soil deposit (commonly found throughout Canterbury) on top of the cliff. Moreover, detailing the external component of the slope profile shows that Redcliffs’ cliff is a 40 – 80 m cliff with two intersecting (NE and SE facing) slope aspects. The (remotely) measured geometry of the cliff face comprises of multiple outstanding gradients, averaging a slope angle of ~67 degrees (post-13 June 2011), where the steepest components are ~80 degrees, whereas the gentle sloping sections are ~44 degrees. The physical structure of Redcliffs’ cliff drastically changed after each collapse, whereby seismically induced alterations to the slope geometry resulted in material deposited on the talus at the base of the cliff. Prior to the first collapse, the variance of the gradient down the slope was minimal, with the SE Face being the most variable with up to three major gradients on one cross section. However, after each major collapse, the variability increased with more parts of the cliff face having more than one major gradient that is steeper or gentler than the remainder of the slope. The estimated volume of material lost as a result of the gradient changes was 28,267 m³ in February and 11,360 m³ in June 2011. In addition, surveys of the cliff top after the failure incidents revealed the development of fissures along the cliff edge. Monitoring 10 fissures over three months indicated that fissured by the cliff edge respond to intense seismicity (generally ≥ Mw 4) by widening. Redcliffs’ cliff collapsed on two separate occasions as a result of an accumulated amount of damage of the rock masses in the cliff (caused by weathering and erosion over time), and two Mw 6.2 trigger earthquakes which shook the Redcliffs and the surrounding area at a Peak Ground Acceleration (PGA) estimated to be around 2 g. The results of the theoretical study suggests that PGA levels felt on-site during both instances of failure are the result of three major factors: source of the quake and the site affected; topographic amplification of the ground movement; the short distance between the source and the cliff for both fault ruptures; the focus of seismic energy in…

Subjects/Keywords: geological; geotechnical; modelling; post-failure; Redcliffs; mechanism; mechanics; failure; earthquakes; model; cause; behaviour

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APA (6^th Edition):

Lo, R. B. Q. (2013). A multidisciplinary engineering geological investigation of cliff collapse at Redcliffs in the 22nd February and 13 June 2011 earthquakes. (Masters Thesis). University of Canterbury. Retrieved from http://dx.doi.org/10.26021/7917

Chicago Manual of Style (16^th Edition):

Lo, Reuben Bing Quan. “A multidisciplinary engineering geological investigation of cliff collapse at Redcliffs in the 22nd February and 13 June 2011 earthquakes.” 2013. Masters Thesis, University of Canterbury. Accessed March 07, 2021. http://dx.doi.org/10.26021/7917.

MLA Handbook (7^th Edition):

Lo, Reuben Bing Quan. “A multidisciplinary engineering geological investigation of cliff collapse at Redcliffs in the 22nd February and 13 June 2011 earthquakes.” 2013. Web. 07 Mar 2021.

Vancouver:

Lo RBQ. A multidisciplinary engineering geological investigation of cliff collapse at Redcliffs in the 22nd February and 13 June 2011 earthquakes. [Internet] [Masters thesis]. University of Canterbury; 2013. [cited 2021 Mar 07]. Available from: http://dx.doi.org/10.26021/7917.

Council of Science Editors:

Lo RBQ. A multidisciplinary engineering geological investigation of cliff collapse at Redcliffs in the 22nd February and 13 June 2011 earthquakes. [Masters Thesis]. University of Canterbury; 2013. Available from: http://dx.doi.org/10.26021/7917

Univerzitet u Beogradu

12. Ilić, Ivana D. 1976-. Нумеричко моделирање делова структуре летелице од вишеслојних композитних материјала у подручју геометријске нелинеарности.

Degree: Mašinski fakultet, 2016, Univerzitet u Beogradu

URL: https://fedorabg.bg.ac.rs/fedora/get/o:13817/bdef:Content/get

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Машинство - Ваздухопловство / Mechanical engineering - Aeronautical engineering

Циљ истраживања је успостављање погодне нумеричке процедуре за одређивање чврстоће и крутости главног стајног трапа Тактичке… (more)

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Машинство - Ваздухопловство / Mechanical engineering - Aeronautical engineering

Циљ истраживања је успостављање погодне нумеричке процедуре за одређивање чврстоће и крутости главног стајног трапа Тактичке беспилотне летелице Пегаз. Главни стајни трап је типа гибња израђеног од вишеслојних композитних материјала, карбона и стакла, и представља један од најосетљивијих делова летелице. За одређивање померања и расподеле напона у гибњу је коришћена метода коначних елемената (МКЕ). Понашање гибња, под дејством оптерећења, залази у област геометријски нелинеарних проблема и при моделирању је коришћен нелинеарни тип анализе. Механичке карактеристике материјала који су коришћени за израду гибња су одређене експериментално. Ради верификације резултата добијених нумеричким путем гибањ је испитан експериментално. Резултати померања као и чврстоћа добијени експерименталним путем су упоређени са нумерички добијеним резултатима и постигнуто је добро слагање. Радом је успостављен поуздан и ефикасан нумерички приступ прорачуна структуралних елемената израђених од композита чије понашање улази у подручје геометријске нелинеарности.

Advisors/Committee Members: Petrović, Zlatko, 1951-.

Subjects/Keywords: Layered composite; Leaf spring; Geometrical nonlinear analysis; Finite element method; Tactical UAV; Failure index; Tsai-Wu failure criterion

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APA (6^th Edition):

Ilić, I. D. 1. (2016). Нумеричко моделирање делова структуре летелице од вишеслојних композитних материјала у подручју геометријске нелинеарности. (Thesis). Univerzitet u Beogradu. Retrieved from https://fedorabg.bg.ac.rs/fedora/get/o:13817/bdef:Content/get

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):

Ilić, Ivana D 1976-. “Нумеричко моделирање делова структуре летелице од вишеслојних композитних материјала у подручју геометријске нелинеарности.” 2016. Thesis, Univerzitet u Beogradu. Accessed March 07, 2021. https://fedorabg.bg.ac.rs/fedora/get/o:13817/bdef:Content/get.

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

MLA Handbook (7^th Edition):

Ilić, Ivana D 1976-. “Нумеричко моделирање делова структуре летелице од вишеслојних композитних материјала у подручју геометријске нелинеарности.” 2016. Web. 07 Mar 2021.

Vancouver:

Ilić ID1. Нумеричко моделирање делова структуре летелице од вишеслојних композитних материјала у подручју геометријске нелинеарности. [Internet] [Thesis]. Univerzitet u Beogradu; 2016. [cited 2021 Mar 07]. Available from: https://fedorabg.bg.ac.rs/fedora/get/o:13817/bdef:Content/get.

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

Council of Science Editors:

Ilić ID1. Нумеричко моделирање делова структуре летелице од вишеслојних композитних материјала у подручју геометријске нелинеарности. [Thesis]. Univerzitet u Beogradu; 2016. Available from: https://fedorabg.bg.ac.rs/fedora/get/o:13817/bdef:Content/get

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

University of Minnesota

13. Makhnenko, Roman Yuryevich. Deformation of fluid-saturated porous rock.

Degree: PhD, Civil Engineering, 2013, University of Minnesota

URL: http://purl.umn.edu/158804

► In-situ rock is often fully saturated or at least has a high fluid content. The presence of pore fluid can affect both the elastic response… (more)

Subjects/Keywords: Dilatancy; Failure criterion; Novel experimental methods; Plane strain testing; Poroelasticity; Porous rock

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APA (6^th Edition):

Makhnenko, R. Y. (2013). Deformation of fluid-saturated porous rock. (Doctoral Dissertation). University of Minnesota. Retrieved from http://purl.umn.edu/158804

Chicago Manual of Style (16^th Edition):

Makhnenko, Roman Yuryevich. “Deformation of fluid-saturated porous rock.” 2013. Doctoral Dissertation, University of Minnesota. Accessed March 07, 2021. http://purl.umn.edu/158804.

MLA Handbook (7^th Edition):

Makhnenko, Roman Yuryevich. “Deformation of fluid-saturated porous rock.” 2013. Web. 07 Mar 2021.

Vancouver:

Makhnenko RY. Deformation of fluid-saturated porous rock. [Internet] [Doctoral dissertation]. University of Minnesota; 2013. [cited 2021 Mar 07]. Available from: http://purl.umn.edu/158804.

Council of Science Editors:

Makhnenko RY. Deformation of fluid-saturated porous rock. [Doctoral Dissertation]. University of Minnesota; 2013. Available from: http://purl.umn.edu/158804

Colorado School of Mines

14. Van Hall, Stephen N. Improving self-pierce rivet performance through processing and alloy development.

Degree: PhD, Metallurgical and Materials Engineering, 2017, Colorado School of Mines

URL: http://hdl.handle.net/11124/171137

► Spot welding has been used to join steel sheet material in the past during automotive manufacturing. The increasing use of aluminum and mixed materials to… (more)

▼ Spot welding has been used to join steel sheet material in the past during automotive manufacturing. The increasing use of aluminum and mixed materials to achieve continually increasing fuel economy standards requires mechanical joining methods to provide adequate impact performance. One such mechanical joining process is self-pierce riveting (SPR). Self-pierce riveting has grown in popularity in recent years due to fast cycle times, high static strength and fatigue performance as well as the ability to join many different sheet material combinations. Self-pierce rivet utilization has become limited due to the material properties of the rivet in two main areas: the joining of high-strength sheet material and joining of multiple sheet material combinations using a single rivet geometry, referred to as commonization. Two specific case studies have been developed to assess the failures that occur and evaluate potential solutions: joining of press-hardened steel (PHS) to Al6111 and improved commonization ability using a two layer aluminum joint that is currently joined with a specialized rivet. Riveting trials have been performed on each of the two case studies using cold forged rivets produced from 10B37 steel that has been heat-treated through a quench and temper process to a range of hardness levels to evaluate the failures that occur within the rivet. The failures occur with two different modes: buckling of the rivet at hardness values below 550 HV when joining PHS and Al6111 and fractures that occur in the rivet tail at hardness values above 550 HV during joining in each of the case studies under evaluation. The fractures have been attributed to a high degree of hoop strain that forms when the rivets are flared beyond the design specifications. A method to replicate the rivet flaring procedure under laboratory conditions has been developed by flaring the rivets through various strain paths to induce a hoop strain and the resultant fractures. The flaring method shows the ability to replicate the types of fractures that were observed during joining attempts while monitoring applied force, crosshead displacement and strain at the point of fracture at the rivet tail using digital image correlation. Alternative alloys including 4130, 4340 and 5160 were evaluated alongside 10B37 for improved performance after quenching and tempering, austempering and after being intentionally decarburized to varying degrees. The heat-treatments were evaluated through microscopy, fractography, rivet flaring and joining attempts for each case study and alloy under investigation. All of the alternative alloys showed no significant performance gains after being quenched and tempered or austempered. However, hoop strain to failure during flaring was increased between 2-4x after the rivets had been intentionally decarburized. The intentionally decarburized rivets were evaluated through joining trials and provided successful joining for each of the case studies under investigation using 10B37 rivets. Rivets produced from 4340 and 5160 also… Advisors/Committee Members: Findley, Kip Owen (advisor), Speer, J. G. (committee member), Van Tyne, C. J. (committee member), Stebner, Aaron P. (committee member), Cryderman, Robert (committee member).

Subjects/Keywords: failure criterion; joining; self-pierce rivet; finite element analysis; decarburization; press-hardened steel

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

APA (6^th Edition):

Van Hall, S. N. (2017). Improving self-pierce rivet performance through processing and alloy development. (Doctoral Dissertation). Colorado School of Mines. Retrieved from http://hdl.handle.net/11124/171137

Chicago Manual of Style (16^th Edition):

Van Hall, Stephen N. “Improving self-pierce rivet performance through processing and alloy development.” 2017. Doctoral Dissertation, Colorado School of Mines. Accessed March 07, 2021. http://hdl.handle.net/11124/171137.

MLA Handbook (7^th Edition):

Van Hall, Stephen N. “Improving self-pierce rivet performance through processing and alloy development.” 2017. Web. 07 Mar 2021.

Vancouver:

Van Hall SN. Improving self-pierce rivet performance through processing and alloy development. [Internet] [Doctoral dissertation]. Colorado School of Mines; 2017. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/11124/171137.

Council of Science Editors:

Van Hall SN. Improving self-pierce rivet performance through processing and alloy development. [Doctoral Dissertation]. Colorado School of Mines; 2017. Available from: http://hdl.handle.net/11124/171137

NSYSU

15. HSU, CHUNG-HSIEN. The study of barrier mechanisms of tantalum nitride diffusion barrier layer between SiGe and Cu.

Degree: Master, Materials Science and Engineering, 2000, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0716100-174737

► The failure mechanisms of the tantalum-based nitride diffusion barrier using between copper metal and the SiGe/Si layers grown with UHV/CVD have been studied. The TaN… (more)

Subjects/Keywords: diffusion barrier; copper metal; tantalum-based nitride; SiGe; failure mechanism

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APA (6^th Edition):

HSU, C. (2000). The study of barrier mechanisms of tantalum nitride diffusion barrier layer between SiGe and Cu. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0716100-174737

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):

HSU, CHUNG-HSIEN. “The study of barrier mechanisms of tantalum nitride diffusion barrier layer between SiGe and Cu.” 2000. Thesis, NSYSU. Accessed March 07, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0716100-174737.

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

MLA Handbook (7^th Edition):

HSU, CHUNG-HSIEN. “The study of barrier mechanisms of tantalum nitride diffusion barrier layer between SiGe and Cu.” 2000. Web. 07 Mar 2021.

Vancouver:

HSU C. The study of barrier mechanisms of tantalum nitride diffusion barrier layer between SiGe and Cu. [Internet] [Thesis]. NSYSU; 2000. [cited 2021 Mar 07]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0716100-174737.

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

Council of Science Editors:

HSU C. The study of barrier mechanisms of tantalum nitride diffusion barrier layer between SiGe and Cu. [Thesis]. NSYSU; 2000. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0716100-174737

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

Brno University of Technology

16. Smékalová, Jana. Mechanismy únavového poškození niklové superslitiny Inconel 713LC za teploty 800°C: Fatigue failure mechanism of nickel-based superalloy Inconel 713LC under 800°C.

Degree: 2019, Brno University of Technology

URL: http://hdl.handle.net/11012/14361

► Nickel superalloys are used for high-temperature application in energetic and aerospace industry. They are exposed to aggressive environment at high temperatures with the interactions between… (more)

Subjects/Keywords: niklová superslitina; Inconel 713LC; mechanismus únavového poškození; povrchová Al-Si vrstva; rychlost šíření únavové trhliny; nickel based superalloy; Inconel 713LC; fatigue failure mechanism; Al-Si coating; fatigue crack growth rate

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APA (6^th Edition):

Smékalová, J. (2019). Mechanismy únavového poškození niklové superslitiny Inconel 713LC za teploty 800°C: Fatigue failure mechanism of nickel-based superalloy Inconel 713LC under 800°C. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/14361

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):

Smékalová, Jana. “Mechanismy únavového poškození niklové superslitiny Inconel 713LC za teploty 800°C: Fatigue failure mechanism of nickel-based superalloy Inconel 713LC under 800°C.” 2019. Thesis, Brno University of Technology. Accessed March 07, 2021. http://hdl.handle.net/11012/14361.

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

MLA Handbook (7^th Edition):

Smékalová, Jana. “Mechanismy únavového poškození niklové superslitiny Inconel 713LC za teploty 800°C: Fatigue failure mechanism of nickel-based superalloy Inconel 713LC under 800°C.” 2019. Web. 07 Mar 2021.

Vancouver:

Smékalová J. Mechanismy únavového poškození niklové superslitiny Inconel 713LC za teploty 800°C: Fatigue failure mechanism of nickel-based superalloy Inconel 713LC under 800°C. [Internet] [Thesis]. Brno University of Technology; 2019. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/11012/14361.

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

Council of Science Editors:

Smékalová J. Mechanismy únavového poškození niklové superslitiny Inconel 713LC za teploty 800°C: Fatigue failure mechanism of nickel-based superalloy Inconel 713LC under 800°C. [Thesis]. Brno University of Technology; 2019. Available from: http://hdl.handle.net/11012/14361

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

Colorado School of Mines

17. Wang, Fei. Numerical study of rockburst damage around excavations induced by fault-slip, A.

Degree: PhD, Mining Engineering, 2019, Colorado School of Mines

URL: http://hdl.handle.net/11124/173374

► The increasing depths of mining and associated in-situ stresses have made rockburst a serious risk for underground mining and tunneling. Therefore, it is important to… (more)

▼ The increasing depths of mining and associated in-situ stresses have made rockburst a serious risk for underground mining and tunneling. Therefore, it is important to understand the energy mechanisms of unstable rock failure to reduce rockburst hazards. In this dissertation, an energy approach is developed by integrating energy equations into UDEC software where energy components including elastic strain energy, plastic strain work, and joint friction work can be tracked in each individual zone or contact of the numerical model at every time step. Rapid and large changes in energy components were used to identify unstable rock failure modes, and the magnitudes of these changes were used to quantify the unstable rock failure intensity. Simulation of compression testing confirmed that unstable rock failure tends to occur in stiff and brittle rock loaded with a soft loading system, resulting from the fact that a small loading system stiffness (LSS) and rock stiffness will increase the amount of stored elastic strain energy in the model, while a brittle rock will require less amount of elastic strain energy for plastic strain work during the rock damage process. Direct shear test modeling results show that unstable slip failure at the same peak shear stress is less likely to occur in discontinuities with smaller shear stiffness, larger roughness, and/or that are embedded in a rock matrix with smaller stiffness. A stiff rock matrix surrounding the discontinuity can store less elastic strain energy to be transferred to the joint during failure, while smaller shear stiffness represents a larger slip-weakening distance and requires more elastic strain energy for the slip failure. Rockburst damage induced by fault slip at the excavation scale was investigated with a circular excavation model with a nearby discontinuity, and a critical discontinuity distance parameter was proposed to quantify the rockburst potentials for this type of rockburst. The critical discontinuity distance refers to the minimum normal distance between the excavation and discontinuity plane for the excavation to stay stable; therefore, a larger critical discontinuity distance represents a higher rockburst potential. The influence of the in-situ stress, discontinuity dip angle, excavation radius, and fault length, are analyzed with the hypothetical base model. Finally, a rockburst event from the drainage tunnel at Jinping II hydropower station is simulated to validate the numerical results with the measured released energy and the estimated normal fault distance. Advisors/Committee Members: Kaunda, Rennie (advisor), Brune, Jürgen F. (committee member), Nakagawa, Masami (committee member), Walton, Gabriel (committee member).

Subjects/Keywords: energy transfer; rockburst mechanism; unstable rock failure; fault slip; energy mechanism; rock mechanics

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APA (6^th Edition):

Wang, F. (2019). Numerical study of rockburst damage around excavations induced by fault-slip, A. (Doctoral Dissertation). Colorado School of Mines. Retrieved from http://hdl.handle.net/11124/173374

Chicago Manual of Style (16^th Edition):

Wang, Fei. “Numerical study of rockburst damage around excavations induced by fault-slip, A.” 2019. Doctoral Dissertation, Colorado School of Mines. Accessed March 07, 2021. http://hdl.handle.net/11124/173374.

MLA Handbook (7^th Edition):

Wang, Fei. “Numerical study of rockburst damage around excavations induced by fault-slip, A.” 2019. Web. 07 Mar 2021.

Vancouver:

Wang F. Numerical study of rockburst damage around excavations induced by fault-slip, A. [Internet] [Doctoral dissertation]. Colorado School of Mines; 2019. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/11124/173374.

Council of Science Editors:

Wang F. Numerical study of rockburst damage around excavations induced by fault-slip, A. [Doctoral Dissertation]. Colorado School of Mines; 2019. Available from: http://hdl.handle.net/11124/173374

University of Windsor

18. Chen, Ying. Failure mechanism of coated biomaterials under high impact-sliding contact stresses.

Degree: PhD, Mechanical, Automotive, and Materials Engineering, 2014, University of Windsor

URL: http://scholar.uwindsor.ca/etd/5099

► This study uses a newly developed testing method – inclined cyclic impact-sliding test to investigate the failure behaviors of different types of biomaterials, (SS316L, Ti6Al4V… (more)

▼ This study uses a newly developed testing method – inclined cyclic impact-sliding test to investigate the failure behaviors of different types of biomaterials, (SS316L, Ti6Al4V and CoCr) coated by different coatings (TiN, DLC and PEO), under extremely high dynamic contact stress conditions. This test method can simulate the combined impact and sliding/rolling loading conditions, which is very practical in many aspects of commercial usages. During the tests, fatigue cracking, chipping, peeling and material transferring were observed in damaged area. This research is mainly focused on the failure behaviors of load-bearing materials which cyclic impacting and sliding are always involved. This purpose was accomplished in the three stages: First, impact-sliding test was carried out on TiN coated unhardened M2. It was found that soft substrate can cause early failure of coating due to the considerable plastic deformation in the substrate. In this case, stronger substrate is required to support coating better when tested under high contact stresses. Second, PEO coated Ti-6Al-4V was tested under pure sliding and impact-sliding wear conditions. PEO coating was found not strong enough to afford the high contact pressure under cyclic impact-sliding wear test due to its porous surface structure. However, the wear performance of PEO coating was enhanced due to the sub-stoichiometric oxide. To sum up, for load-bearing biomedical implants involved in high impacting movement, PEO coating may not be a promising surface protection. Third, the dense, smooth PVD/CVD bio-inert coatings were reconsidered. DLC and TiN coatings, combined by different substrates together with different interface materials were tested under the cyclic impact-sliding test using a set of proper loading. The results show that to choose a proper combination of coating, interface and substrate based on their mechanical properties is of great importance under the test condition. Hard substrates provide support to coating better and a ductile and adhesive interface layer can delay the cracked coating from peeled-off. Advisors/Committee Members: Nie, X..

Subjects/Keywords: Pure sciences; Applied sciences; Biomaterial; Coating; Failure mechanism; Fatigue wear

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

APA (6^th Edition):

Chen, Y. (2014). Failure mechanism of coated biomaterials under high impact-sliding contact stresses. (Doctoral Dissertation). University of Windsor. Retrieved from http://scholar.uwindsor.ca/etd/5099

Chicago Manual of Style (16^th Edition):

Chen, Ying. “Failure mechanism of coated biomaterials under high impact-sliding contact stresses.” 2014. Doctoral Dissertation, University of Windsor. Accessed March 07, 2021. http://scholar.uwindsor.ca/etd/5099.

MLA Handbook (7^th Edition):

Chen, Ying. “Failure mechanism of coated biomaterials under high impact-sliding contact stresses.” 2014. Web. 07 Mar 2021.

Vancouver:

Chen Y. Failure mechanism of coated biomaterials under high impact-sliding contact stresses. [Internet] [Doctoral dissertation]. University of Windsor; 2014. [cited 2021 Mar 07]. Available from: http://scholar.uwindsor.ca/etd/5099.

Council of Science Editors:

Chen Y. Failure mechanism of coated biomaterials under high impact-sliding contact stresses. [Doctoral Dissertation]. University of Windsor; 2014. Available from: http://scholar.uwindsor.ca/etd/5099

Texas A&M University

19. Zhang, Yanbei. Probabilistic Calibration of a Discrete Particle Model.

Degree: MS, Civil Engineering, 2011, Texas A&M University

URL: http://hdl.handle.net/1969.1/ETD-TAMU-2010-08-8110

► A discrete element model (DEM) capable of reproducing the mechanistic behavior of a triaxial compressive test performed on a Vosges sandstone specimen is presented considering… (more)

Subjects/Keywords: Probabilistic calibration; discrete element modeling; triaxial test; failure mechanism; Vosges sandstone

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APA (6^th Edition):

Zhang, Y. (2011). Probabilistic Calibration of a Discrete Particle Model. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/ETD-TAMU-2010-08-8110

Chicago Manual of Style (16^th Edition):

Zhang, Yanbei. “Probabilistic Calibration of a Discrete Particle Model.” 2011. Masters Thesis, Texas A&M University. Accessed March 07, 2021. http://hdl.handle.net/1969.1/ETD-TAMU-2010-08-8110.

MLA Handbook (7^th Edition):

Zhang, Yanbei. “Probabilistic Calibration of a Discrete Particle Model.” 2011. Web. 07 Mar 2021.

Vancouver:

Zhang Y. Probabilistic Calibration of a Discrete Particle Model. [Internet] [Masters thesis]. Texas A&M University; 2011. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2010-08-8110.

Council of Science Editors:

Zhang Y. Probabilistic Calibration of a Discrete Particle Model. [Masters Thesis]. Texas A&M University; 2011. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2010-08-8110

University of Plymouth

20. Meng, Maozhou. Effects of marine environment exposure on the static and fatigue mechanical properties of carbon fibre-epoxy composite.

Degree: PhD, 2016, University of Plymouth

URL: http://hdl.handle.net/10026.1/5341

► This thesis studies the static and fatigue failure of carbon fibre-epoxy composite for marine use. The primary objective is to investigate the effects of sea… (more)

▼ This thesis studies the static and fatigue failure of carbon fibre-epoxy composite for marine use. The primary objective is to investigate the effects of sea water ingress on the static and cyclic performance of laminated composites, by using the combination of experimental, numerical and analytical approaches. Experiments were carried out to collect evidence, including data and images, for further analysis. Samples were made from autoclave-cured carbon fibre-epoxy pre-preg for the static, moisture diffusion and fatigue tests. Three chambers were used in the diffusion test, containing fresh water (tap water), sea water and sea water at 70 bar hydrostatic pressure respectively. And the chambers were placed in an oven at a constant temperature 50 °C in order to accelerate the water absorption. Optical and scanning electron microscopies (SEM) were employed to inspect for manufacturing defects and to identify the failure modes. Some formulae were derived to predict the material properties of laminated composites, to validate the mechanical tests, and to explain the failure criteria of composites. Finite element analysis (FEA) was employed to study the phenomena that were observed in the experiments. FEA has the aim to simulate the static, diffusion and fatigue behaviour involving multiphysics and multiscale effects. The FEA modelling has revealed details of the stress and moisture distributions, which have helped to understand the failure mechanisms of laminated composites. Classical laminate theory (CLT) was employed to develop an analytical model. The basic principles of CLT were extended to three-dimensions, and the analytical solution was critically compared with the FEA results. Some MATLAB tools based on CLT were developed to predict the properties of laminated composites and to analyse the experimental data. These MATLAB codes are shown in the appendix. This thesis has contributed to an improved knowledge of the failure mechanisms of composite materials in both normal and marine environments, and to optimize structural design of FRP composites.

Subjects/Keywords: 620.1; CFRP; fatigue; failure mechanism; bending; marine environment; moisture; FEA; CLT

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APA (6^th Edition):

Meng, M. (2016). Effects of marine environment exposure on the static and fatigue mechanical properties of carbon fibre-epoxy composite. (Doctoral Dissertation). University of Plymouth. Retrieved from http://hdl.handle.net/10026.1/5341

Chicago Manual of Style (16^th Edition):

Meng, Maozhou. “Effects of marine environment exposure on the static and fatigue mechanical properties of carbon fibre-epoxy composite.” 2016. Doctoral Dissertation, University of Plymouth. Accessed March 07, 2021. http://hdl.handle.net/10026.1/5341.

MLA Handbook (7^th Edition):

Meng, Maozhou. “Effects of marine environment exposure on the static and fatigue mechanical properties of carbon fibre-epoxy composite.” 2016. Web. 07 Mar 2021.

Vancouver:

Meng M. Effects of marine environment exposure on the static and fatigue mechanical properties of carbon fibre-epoxy composite. [Internet] [Doctoral dissertation]. University of Plymouth; 2016. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/10026.1/5341.

Council of Science Editors:

Meng M. Effects of marine environment exposure on the static and fatigue mechanical properties of carbon fibre-epoxy composite. [Doctoral Dissertation]. University of Plymouth; 2016. Available from: http://hdl.handle.net/10026.1/5341

University of Windsor

21. Chen, Ying. Failure mechanism of coated biomaterials under high impact-sliding contact stresses.

Degree: PhD, Mechanical, Automotive, and Materials Engineering, 2014, University of Windsor

URL: https://scholar.uwindsor.ca/etd/5099

► This study uses a newly developed testing method – inclined cyclic impact-sliding test to investigate the failure behaviors of different types of biomaterials, (SS316L, Ti6Al4V… (more)

▼ This study uses a newly developed testing method – inclined cyclic impact-sliding test to investigate the failure behaviors of different types of biomaterials, (SS316L, Ti6Al4V and CoCr) coated by different coatings (TiN, DLC and PEO), under extremely high dynamic contact stress conditions. This test method can simulate the combined impact and sliding/rolling loading conditions, which is very practical in many aspects of commercial usages. During the tests, fatigue cracking, chipping, peeling and material transferring were observed in damaged area. This research is mainly focused on the failure behaviors of load-bearing materials which cyclic impacting and sliding are always involved. This purpose was accomplished in the three stages: First, impact-sliding test was carried out on TiN coated unhardened M2. It was found that soft substrate can cause early failure of coating due to the considerable plastic deformation in the substrate. In this case, stronger substrate is required to support coating better when tested under high contact stresses. Second, PEO coated Ti-6Al-4V was tested under pure sliding and impact-sliding wear conditions. PEO coating was found not strong enough to afford the high contact pressure under cyclic impact-sliding wear test due to its porous surface structure. However, the wear performance of PEO coating was enhanced due to the sub-stoichiometric oxide. To sum up, for load-bearing biomedical implants involved in high impacting movement, PEO coating may not be a promising surface protection. Third, the dense, smooth PVD/CVD bio-inert coatings were reconsidered. DLC and TiN coatings, combined by different substrates together with different interface materials were tested under the cyclic impact-sliding test using a set of proper loading. The results show that to choose a proper combination of coating, interface and substrate based on their mechanical properties is of great importance under the test condition. Hard substrates provide support to coating better and a ductile and adhesive interface layer can delay the cracked coating from peeled-off. Advisors/Committee Members: Nie, X..

Subjects/Keywords: Pure sciences; Applied sciences; Biomaterial; Coating; Failure mechanism; Fatigue wear

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❌

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

APA (6^th Edition):

Chen, Y. (2014). Failure mechanism of coated biomaterials under high impact-sliding contact stresses. (Doctoral Dissertation). University of Windsor. Retrieved from https://scholar.uwindsor.ca/etd/5099

Chicago Manual of Style (16^th Edition):

Chen, Ying. “Failure mechanism of coated biomaterials under high impact-sliding contact stresses.” 2014. Doctoral Dissertation, University of Windsor. Accessed March 07, 2021. https://scholar.uwindsor.ca/etd/5099.

MLA Handbook (7^th Edition):

Chen, Ying. “Failure mechanism of coated biomaterials under high impact-sliding contact stresses.” 2014. Web. 07 Mar 2021.

Vancouver:

Chen Y. Failure mechanism of coated biomaterials under high impact-sliding contact stresses. [Internet] [Doctoral dissertation]. University of Windsor; 2014. [cited 2021 Mar 07]. Available from: https://scholar.uwindsor.ca/etd/5099.

Council of Science Editors:

Chen Y. Failure mechanism of coated biomaterials under high impact-sliding contact stresses. [Doctoral Dissertation]. University of Windsor; 2014. Available from: https://scholar.uwindsor.ca/etd/5099

University of Southern California

22. Zhang, Yuzheng. Mechanical behavior and microstructure optimization of ultrafine-grained aluminum alloys and nanocomposites.

Degree: PhD, Materials Science, 2015, University of Southern California

URL: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/613286/rec/4005

► Nanocrystalline (NC) or ultrafine-grained (UFG) materials exhibit significantly improved strength and hardness compared to the coarse grain (CG) counterpart according to the well-known Hall-Petch effect.… (more)

▼ Nanocrystalline (NC) or ultrafine-grained (UFG) materials exhibit significantly improved strength and hardness compared to the coarse grain (CG) counterpart according to the well-known Hall-Petch effect. In this work, aluminum alloy (AA) 5083 was selected as the target material due to its low density, good weldability and excellent corrosion resistance. Refined grain size was achieved by severe plastic deformation techniques including cryomilling and high pressure torsion (HPT) which both introduced large amount of plastic strain into the materials and thus refined grain sizes down to nano-scale. ❧ Despite enhanced strength and hardness, the NC or UFG AA 5083 is very brittle due to the lack of plasticity mechanisms. This brittleness can cause numerous risks and failures during material service or even during production. The major challenge of this work is to restore ductility of the NC or UFG AA 5083 while maintaining its high strength. Toughening approaches described in this work follow the materials science paradigm which says “microstructure connects fabrication with properties”. The mechanical properties of the end products were tailored by altering the microstructure via different processing routes. We seek an optimized microstructure which can balance the strength with the ductility and maximize the fracture toughness of the NC/UFG AA 5083. ❧ Chapter 1 will discuss the general background, modern synthesis methods, strengthening mechanisms and toughening efforts of the NC/UFG materials. Chapter 2 will introduce the methods and experimental procedures for microstructure characterization and deformation mechanism investigation. Chapter 3 will describe an in situ micro-strain measurement of an UFG Al-Mg alloy at sub-micron scale. Chapter 4 will focus on the microstructural evolution of the cryomilled Al/B4C powder during processing. Chapter 5 will investigate the failure mechanisms and the toughening effect of the ductile regions in a trimodal AA 5083 nanocomposite. Chapter 6 will demonstrate the attempt to enhance the toughness by optimizing the morphology and spacing of the ductile regions in the trimodal nanocomposite. At last, chapter 7 will discuss some historic aspects of this work and the challenges that are lying ahead. Advisors/Committee Members: Nutt, Steven R. (Committee Chair), Kassner, Michael E. (Committee Member), Hodge, Andrea M. (Committee Member).

Subjects/Keywords: metal matrix composite; failure mechanism; ultrafine-grained materials; cryomilling

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APA (6^th Edition):

Zhang, Y. (2015). Mechanical behavior and microstructure optimization of ultrafine-grained aluminum alloys and nanocomposites. (Doctoral Dissertation). University of Southern California. Retrieved from http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/613286/rec/4005

Chicago Manual of Style (16^th Edition):

Zhang, Yuzheng. “Mechanical behavior and microstructure optimization of ultrafine-grained aluminum alloys and nanocomposites.” 2015. Doctoral Dissertation, University of Southern California. Accessed March 07, 2021. http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/613286/rec/4005.

MLA Handbook (7^th Edition):

Zhang, Yuzheng. “Mechanical behavior and microstructure optimization of ultrafine-grained aluminum alloys and nanocomposites.” 2015. Web. 07 Mar 2021.

Vancouver:

Zhang Y. Mechanical behavior and microstructure optimization of ultrafine-grained aluminum alloys and nanocomposites. [Internet] [Doctoral dissertation]. University of Southern California; 2015. [cited 2021 Mar 07]. Available from: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/613286/rec/4005.

Council of Science Editors:

Zhang Y. Mechanical behavior and microstructure optimization of ultrafine-grained aluminum alloys and nanocomposites. [Doctoral Dissertation]. University of Southern California; 2015. Available from: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/613286/rec/4005

University of Sydney

23. Yuan, Chen. Crushing Responses and Design of CF/EP Composite Structures .

Degree: 2018, University of Sydney

URL: http://hdl.handle.net/2123/20581

► By virtue of their excellent properties of specific strength-to-mass and stiffness-to-mass ratios, carbon fibre reinforced epoxy (CF/EP) structures are becoming increasingly important in various transportation… (more)

Subjects/Keywords: Composite structure; Dynamic response; failure mechanism; Modelling; CFRP; Optimisation design

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

APA (6^th Edition):

Yuan, C. (2018). Crushing Responses and Design of CF/EP Composite Structures . (Thesis). University of Sydney. Retrieved from http://hdl.handle.net/2123/20581

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):

Yuan, Chen. “Crushing Responses and Design of CF/EP Composite Structures .” 2018. Thesis, University of Sydney. Accessed March 07, 2021. http://hdl.handle.net/2123/20581.

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

MLA Handbook (7^th Edition):

Yuan, Chen. “Crushing Responses and Design of CF/EP Composite Structures .” 2018. Web. 07 Mar 2021.

Vancouver:

Yuan C. Crushing Responses and Design of CF/EP Composite Structures . [Internet] [Thesis]. University of Sydney; 2018. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/2123/20581.

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

Council of Science Editors:

Yuan C. Crushing Responses and Design of CF/EP Composite Structures . [Thesis]. University of Sydney; 2018. Available from: http://hdl.handle.net/2123/20581

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

University of Maryland

24. Shrivastava, Anshul. Reliability Evaluation of Liquid and Polymer Aluminum Electrolytic Capacitors.

Degree: Mechanical Engineering, 2014, University of Maryland

URL: http://hdl.handle.net/1903/16098

► Liquid aluminum electrolytic capacitors are known for their reliability problems. They are considered as the weakest link in the power electronics system. The liquid electrolyte… (more)

▼ Liquid aluminum electrolytic capacitors are known for their reliability problems. They are considered as the weakest link in the power electronics system. The liquid electrolyte of these capacitors is the single most important component which affects the reliability of these capacitors. The principal ingredients of the liquid electrolyte are solvent, water, solute and additives such as corrosion inhibitors and hydrogen absorbers. Usually, the primary solvent used in liquid electrolyte of aluminum electrolytic capacitors is ethylene glycol or γ-butyrolactone. The effect of liquid electrolyte solvent on the failure mechanisms observed in liquid aluminum electrolytic capacitors is missing. Effect of ripple current on the observed failure mechanisms is unknown. Polymer aluminum (PA) capacitors were introduced as the polymer electrolyte is conductive and solid therefore, it does not evaporate and the equivalent series resistance (ESR) of the PA capacitors is low. Manufacturers advise not to use PA capacitors in elevated temperature-humidity environments. But, the Failure modes and mechanisms of polymer aluminum electrolytic capacitors in elevated temperature-humidity are unknown. In this study, life testing of liquid aluminum electrolytic capacitors chosen based on primary solvent of the electrolyte was performed. For γ-butyrolactone solvent based capacitors, the failure mechanisms observed causing decrease in capacitance were evaporation of electrolyte and decrease in surface area of the aluminum oxide dielectric layer. The observed ESR increase was due to evaporation of electrolyte. For ethylene glycol solvent based capacitors, ESR increase was observed due to ester and amide formation, along with decrease in concentration of the carboxylic acid salts in the electrolyte and evaporation of electrolyte. The failure mechanisms observed in life tests with and without ripple current were the same. PA capacitors were tested at elevated temperature-humidity of 85ºC, 85%RH and Highly Accelerated Stress Test (HAST) condition of 110ºC, 85%RH. PA capacitors failed due to increase in ESR and increase in leakage current. Iron particles in dielectric layer from the manufacturing process of PA capacitors caused the high leakage current failure. This is a new failure mechanism which has not been reported in the literature. Failure modes observed in 85ºC, 85%RH and HAST tests were same therefore, HAST tests can be used as rapid assessment test for PA capacitors in elevated temperature-humidity environment. Advisors/Committee Members: Pecht, Michael (advisor).

Subjects/Keywords: Mechanical engineering; Failure Analysis; Failure Mechanism; Life Testing; Liquid Aluminum Electrolytic Capacitors; Polymer Aluminum Electrolytic Capacitors; Reliability Testing

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

APA (6^th Edition):

Shrivastava, A. (2014). Reliability Evaluation of Liquid and Polymer Aluminum Electrolytic Capacitors. (Thesis). University of Maryland. Retrieved from http://hdl.handle.net/1903/16098

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):

Shrivastava, Anshul. “Reliability Evaluation of Liquid and Polymer Aluminum Electrolytic Capacitors.” 2014. Thesis, University of Maryland. Accessed March 07, 2021. http://hdl.handle.net/1903/16098.

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

MLA Handbook (7^th Edition):

Shrivastava, Anshul. “Reliability Evaluation of Liquid and Polymer Aluminum Electrolytic Capacitors.” 2014. Web. 07 Mar 2021.

Vancouver:

Shrivastava A. Reliability Evaluation of Liquid and Polymer Aluminum Electrolytic Capacitors. [Internet] [Thesis]. University of Maryland; 2014. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/1903/16098.

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

Council of Science Editors:

Shrivastava A. Reliability Evaluation of Liquid and Polymer Aluminum Electrolytic Capacitors. [Thesis]. University of Maryland; 2014. Available from: http://hdl.handle.net/1903/16098

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

West Virginia University

25. Cicek, Sena. Adaptation of Coal Mine Floor Rating (CMFR) to Eastern U.S. Coal Mines.

Degree: MS, Mining Engineering, 2020, West Virginia University

URL: https://doi.org/10.33915/etd.7843 ; https://researchrepository.wvu.edu/etd/7843

► Floor heave—the excessive deformation and failure of floor strata—is a serious problem for many underground coal mining operations in the U.S. There is an… (more)

▼ Floor heave—the excessive deformation and failure of floor strata—is a serious problem for many underground coal mining operations in the U.S. There is an accepted floor heave design methodology developed for the Illinois basin coal mines (Gadde, 2009). However, for Eastern U.S. coal mines in the Appalachian region, there is not any systematic design method to assess floor heave potential. In order to prevent stability problems associated with floor failure and to ensure the safety of the miners in this region, a systematic and proactive method to assess the potential of floor stability that also takes the floor failure mechanisms into consideration is a requirement. In this study, the Coal Mine Floor Rating (CMFR) system, a rock mass classification system recently developed by Mo (2019) in Australia, which provides an indicator for the competence of floor strata is applied to Eastern U.S. coal mines that intermittently experienced floor heave. Exploratory geologic drill log data, overburden maps, and mine plans were gathered in a broad database for this study. Additionally, qualitative data (failure/non-failure) on floor conditions of the mine entries near the core holes were collected and analyzed so that the floor quality, and its relation to entry stability could be estimated by statistical methods. This study found that the original CMFR classification system is not directly applicable in assessing the floor stability of Eastern U.S. coal mines. In order to extend the applicability of the CMFR classification system, the methodology is modified. A calculation procedure of the CMFR classification system’s components, Coal Mine Floor Rating (CMFR) and Horizontal Stress Rating (HSR), is modified; additionally, new parameters were included in the HSR, such as orientation coefficient, horizontal stress magnitude, and elastic modulus of the strong floor layer. The stress distribution around pillars in the vicinity of the floor failure area is further analyzed through boundary element model software LaModel. After modifying the CMFR system, a better separation of failure and non-failure cases from one another is observed and an applicable rock mass classification system capable of predicting potential floor failures in the U.S. is proposed. Advisors/Committee Members: Ihsan Berk Tulu, Christopher Mark.

Subjects/Keywords: Rock mass classification; Coal Mine Floor Rating; CMFR; floor heave; floor failure; buckling failure mechanism; Mining Engineering

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APA (6^th Edition):

Cicek, S. (2020). Adaptation of Coal Mine Floor Rating (CMFR) to Eastern U.S. Coal Mines. (Thesis). West Virginia University. Retrieved from https://doi.org/10.33915/etd.7843 ; https://researchrepository.wvu.edu/etd/7843

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):

Cicek, Sena. “Adaptation of Coal Mine Floor Rating (CMFR) to Eastern U.S. Coal Mines.” 2020. Thesis, West Virginia University. Accessed March 07, 2021. https://doi.org/10.33915/etd.7843 ; https://researchrepository.wvu.edu/etd/7843.

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

MLA Handbook (7^th Edition):

Cicek, Sena. “Adaptation of Coal Mine Floor Rating (CMFR) to Eastern U.S. Coal Mines.” 2020. Web. 07 Mar 2021.

Vancouver:

Cicek S. Adaptation of Coal Mine Floor Rating (CMFR) to Eastern U.S. Coal Mines. [Internet] [Thesis]. West Virginia University; 2020. [cited 2021 Mar 07]. Available from: https://doi.org/10.33915/etd.7843 ; https://researchrepository.wvu.edu/etd/7843.

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

Council of Science Editors:

Cicek S. Adaptation of Coal Mine Floor Rating (CMFR) to Eastern U.S. Coal Mines. [Thesis]. West Virginia University; 2020. Available from: https://doi.org/10.33915/etd.7843 ; https://researchrepository.wvu.edu/etd/7843

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

26. Chabala, Freeman W. Likelihood of development renal dysfunction after one year of treatment with tenofovir(TDF) in HIV/AIDS patients at the UTH: An analytical cross-section study.

Degree: 2015, University of Zimbabwe

URL: http://dspace.unza.zm/handle/123456789/3787

► Studies have suggested that Sub-Sahara Africans are prone to HIV-related renal dysfunction. A study done in Zambia showed increased deaths among HIV/AIDS patients who had… (more)

▼ Studies have suggested that Sub-Sahara Africans are prone to HIV-related renal dysfunction. A study done in Zambia showed increased deaths among HIV/AIDS patients who had renal dysfunction. Tenofovir Disoproxil Fumarate (TDF) one of the first line antiretroviral drugs in Zambia, has been associated with renal tubulopathy and nephrotoxicity in many studies. In Zambia, TDF has been in use since 2007. This study was set out to determine whether TDF had similar Nephrotoxic effects in patients receiving TDF- based regimen at the largest Antiretroviral Therapy (ART) Centre in Lusaka. It aimed at determining the likelihood of patients with no renal dysfunction (CLcr method) at initiation of therapy developing renal dysfunction after 1 year of treatment with TDF- based regimen compared to those on non- TDF- based regimen (these patients were either on Stavudine (D4T)- based regimen or Zidovudine (AZT)- based regimen). An analytical cross- sectional study involved analysis of data obtained from 549 randomly selected HIV/AIDS patient files that were started on ART between September, 2007 and January, 2013. Out of the 549 patients, 275 patients were on TDF- based regimen and 274 patients were on non- TDF- based regimen. Findings showed a significantly larger number of participants on TDF developing renal dysfunction from having no renal dysfunction at baseline compared to those on non- TDF- based regimen; 51 out of 180 verses 8 out of 207, P< 0.001. Upon controlling for age and sex, logistic regression model showed that HIV/AIDS patients on TDF- based regimen were 8.77 times more likely to develop renal dysfunction after one year of therapy from having no renal dysfunction at baseline compared to those on non- TDF- based regimen. It was concluded that treatment with TDF- based regimen was strongly associated with developing renal dysfunction after 1 year of treatment compared to non TDF- based regimen. There is need for follow up of patients on TDF- based regimen or therapy modification to reduce cases of renal dysfunction in patients on treatment thereby allowing them benefit fully by the treatment.

Subjects/Keywords: Renal Failure; Kidney Failure

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

APA (6^th Edition):

Chabala, F. W. (2015). Likelihood of development renal dysfunction after one year of treatment with tenofovir(TDF) in HIV/AIDS patients at the UTH: An analytical cross-section study. (Thesis). University of Zimbabwe. Retrieved from http://dspace.unza.zm/handle/123456789/3787

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):

Chabala, Freeman W. “Likelihood of development renal dysfunction after one year of treatment with tenofovir(TDF) in HIV/AIDS patients at the UTH: An analytical cross-section study.” 2015. Thesis, University of Zimbabwe. Accessed March 07, 2021. http://dspace.unza.zm/handle/123456789/3787.

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

MLA Handbook (7^th Edition):

Chabala, Freeman W. “Likelihood of development renal dysfunction after one year of treatment with tenofovir(TDF) in HIV/AIDS patients at the UTH: An analytical cross-section study.” 2015. Web. 07 Mar 2021.

Vancouver:

Chabala FW. Likelihood of development renal dysfunction after one year of treatment with tenofovir(TDF) in HIV/AIDS patients at the UTH: An analytical cross-section study. [Internet] [Thesis]. University of Zimbabwe; 2015. [cited 2021 Mar 07]. Available from: http://dspace.unza.zm/handle/123456789/3787.

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

Council of Science Editors:

Chabala FW. Likelihood of development renal dysfunction after one year of treatment with tenofovir(TDF) in HIV/AIDS patients at the UTH: An analytical cross-section study. [Thesis]. University of Zimbabwe; 2015. Available from: http://dspace.unza.zm/handle/123456789/3787

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

27. Chekurthi, Shailesh. Fracture criterion to predict strain-rate dependent failure of unidirectional carbon fiber composites under multi-axial state of stress.

Degree: Mechanical Engineering, 2018, University of Manitoba

URL: http://hdl.handle.net/1993/32961

► Advanced polymer matrix composites exhibit time-dependent deformation and fracture owing to the viscoelastic nature of the polymer matrix. Often this rate dependency is characterized under… (more)

▼ Advanced polymer matrix composites exhibit time-dependent deformation and fracture owing to the viscoelastic nature of the polymer matrix. Often this rate dependency is characterized under a single loading mode while the material is simultaneously subjected to multiple loading modes while in service. While the former has been extensively studied, the published research on the latter is very limited. Hence, in the present work, a criterion to predict strain-rate dependent failure of unidirectional continuous carbon fiber polymer matrix composite (Hexcel’s G30-500/F263-7), under multi-axial loading is developed by combining the critical stored elastic energy criterion developed by Raghavan and Meshi [1, 2] for predicting rate-dependent failure under uni-axial loading and Sandhu’s criterion for predicting rate-independent failure for multi-axial loading [3]. Strain-rate dependent critical stored energy for on-axis loading (longitudinal normal, transverse normal, and shear) were determined using the procedure developed by Raghavan and Meshii [1, 2] and tensile testing of [0], [90], and V-notched rail shear test specimens respectively, at three strain rates (10 pwr -3, 10 pwr -4 and 10 pwr -5 per sec), and at various temperatures (24, 80, 120, 160, 200, 245 and 275 C). Using this along with the modified Sandhu’s criterion, the tensile strength of off-axis laminates (10, 15, 30, 45, 60, and 75 degrees), at the strain rates and temperatures identified above, were predicted and compared with the experimental results. Furthermore, the results were plotted as failure envelope in the first stress quadrant (shear stress (τ12) versus tensile transverse normal stress (σ22)) and evaluated. The failure criterion developed in this study resulted in predictions with accuracy (within 8% of experimental results at all strain rates and temperatures) much better than predictions using Tsai-Hill, Hashin-Rotem, and Sandhu’s failure criteria. Advisors/Committee Members: Jayaraman, Raghavan (Mechanical Engineering) (supervisor), Telichev, Igor (Mechanical Engineering).

Subjects/Keywords: Failure Criterion; Strain Rate Dependent Failure; Unidirectional Composites

…literature review of published studies in this area are given in Chapter 2. The failure criterion… …Critical Stored Elastic Energy (WC) criterion, previously used to predict failure… …Fracture Energy (TE) used in Sandhu’s failure criterion [3, 24], the latter… …was modified to develop a fracture criterion to predict rate dependent failure under multi… …thesis off-axis testing has been used to develop the failure criterion for stress quadrant-1…

10 more images…

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

APA (6^th Edition):

Chekurthi, S. (2018). Fracture criterion to predict strain-rate dependent failure of unidirectional carbon fiber composites under multi-axial state of stress. (Masters Thesis). University of Manitoba. Retrieved from http://hdl.handle.net/1993/32961

Chicago Manual of Style (16^th Edition):

Chekurthi, Shailesh. “Fracture criterion to predict strain-rate dependent failure of unidirectional carbon fiber composites under multi-axial state of stress.” 2018. Masters Thesis, University of Manitoba. Accessed March 07, 2021. http://hdl.handle.net/1993/32961.

MLA Handbook (7^th Edition):

Chekurthi, Shailesh. “Fracture criterion to predict strain-rate dependent failure of unidirectional carbon fiber composites under multi-axial state of stress.” 2018. Web. 07 Mar 2021.

Vancouver:

Chekurthi S. Fracture criterion to predict strain-rate dependent failure of unidirectional carbon fiber composites under multi-axial state of stress. [Internet] [Masters thesis]. University of Manitoba; 2018. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/1993/32961.

Council of Science Editors:

Chekurthi S. Fracture criterion to predict strain-rate dependent failure of unidirectional carbon fiber composites under multi-axial state of stress. [Masters Thesis]. University of Manitoba; 2018. Available from: http://hdl.handle.net/1993/32961

28. Liolios, Pantelis. Υπερβολικό μοντέλο αστοχίας υλικών με συνοχή και εσωτερική τριβή.

Degree: 2013, Technical University of Crete (TUC); Πολυτεχνείο Κρήτης

URL: http://hdl.handle.net/10442/hedi/29310

►

In this PhD Dissertation a hyperbolic failure criterion for cohesive, frictional and dilatant materials (rocks, soils, concrete etc.) is proposed. The failure/yield surface is calibrated… (more)

▼

In this PhD Dissertation a hyperbolic failure criterion for cohesive, frictional and dilatant materials (rocks, soils, concrete etc.) is proposed. The failure/yield surface is calibrated by virtue of three free variables which have a clear physical meaning. The criterion predicts well both the tensile and compression regimes of a geomaterial and it takes under consideration the influence of the intermediate principal stress. The meridians of the failure surface are hyperbolas while the trace on the deviatoric plane is described by an elliptic function. The shape on the deviatoric plane evolves from triangular at the tensile regime to circular at high confinement. Thus, the failure surface exhibits brittle behavior at low confinement and ductile at high compression stresses. The calibration results show that the proposed criterion can predict very well the experimental results and it is equivalent or even better than the most widespread used criteria.Based on this hyperbolic criterion, an elastoplastic constitutive model was also elaborated. The calibration of the elastoplastic model requires five additional parameters which are calculated from the uniaxial compression test. For the elastic response of the model, the linear isotropic Hooke law with constant parameters has been considered. For the work hardening behavior, a hardening law is proposed that results in anisotropic hardening of the yield surface. The history of the irreversible plastic deformation, that also drives the hardening law, is the plastic octahedral shear strain. The failure stress is attained when a critical amount of plastic octahedral shear strain has been accumulated into the material. This critical plastic shear strain is considered as a material property. Moreover, a dilatancy rule is proposed that takes under consideration the position of the stress point or in other words the stress inclination. Finally, the damage effect is not considered in this work.Back-analysis results show that the proposed elastoplastic model predicts relatively well the material response a low confinement stresses. The discrepancies observed are mainly due to the assumed constant elastic parameters. The considerations of the hardening law as well as the damage effect also contribute to the observed discrepancies. It was realized that a good elastoplastic model should be based on a robust elasticity model.Finally, in the context of this PhD Dissertation, a relational database for Rock Mechanics tests has been constructed. All the parameters of the elastoplastic model were calibrated on data stored in this database.

Στην παρούσα Διδακτορική Διατριβή προτείνεται ένα υπερβολικό κριτήριο αστοχίας υλικών με συνοχή, εσωτερική τριβή και διαστολικότητα. Η επιφάνεια διαρροής/κριτήριο αστοχίας βαθμονομείται με τρεις παραμέτρους οι οποίες έχουν ξεκάθαρη φυσική έννοια. Το κριτήριο περιγράφει καλά τόσο την περιοχή των εφελκυστικών τάσεων όσο και την περιοχή των θλιπτικών τάσεων ενώ λαμβάνει υπόψη και την επίδραση της ενδιάμεσης κύριας τάσης. Οι μεσημβρινοί του κριτηρίου…

Subjects/Keywords: Αστοχία υλικών; Κριτήριο αστοχίας; Ελαστοπλαστικό μοντέλο; Επιφάνεια διαρροής; ΜΗΧΑΝΙΚΗ ΠΕΤΡΩΜΑΤΩΝ; Σκυρόδεμα; Material failure; Failure criterion; Elastoplastic model; Yield surface; Rock mechanics; Concrete

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

APA (6^th Edition):

Liolios, P. (2013). Υπερβολικό μοντέλο αστοχίας υλικών με συνοχή και εσωτερική τριβή. (Thesis). Technical University of Crete (TUC); Πολυτεχνείο Κρήτης. Retrieved from http://hdl.handle.net/10442/hedi/29310

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):

Liolios, Pantelis. “Υπερβολικό μοντέλο αστοχίας υλικών με συνοχή και εσωτερική τριβή.” 2013. Thesis, Technical University of Crete (TUC); Πολυτεχνείο Κρήτης. Accessed March 07, 2021. http://hdl.handle.net/10442/hedi/29310.

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

MLA Handbook (7^th Edition):

Liolios, Pantelis. “Υπερβολικό μοντέλο αστοχίας υλικών με συνοχή και εσωτερική τριβή.” 2013. Web. 07 Mar 2021.

Vancouver:

Liolios P. Υπερβολικό μοντέλο αστοχίας υλικών με συνοχή και εσωτερική τριβή. [Internet] [Thesis]. Technical University of Crete (TUC); Πολυτεχνείο Κρήτης; 2013. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/10442/hedi/29310.

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

Council of Science Editors:

Liolios P. Υπερβολικό μοντέλο αστοχίας υλικών με συνοχή και εσωτερική τριβή. [Thesis]. Technical University of Crete (TUC); Πολυτεχνείο Κρήτης; 2013. Available from: http://hdl.handle.net/10442/hedi/29310

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

Texas A&M University

29. Yi, Xianjie. Numerical and analytical modeling of sanding onset prediction.

Degree: PhD, Petroleum Engineering, 2004, Texas A&M University

URL: http://hdl.handle.net/1969.1/369

► To provide technical support for sand control decision-making, it is necessary to predict the production condition at which sand production occurs. Sanding onset prediction involves… (more)

▼ To provide technical support for sand control decision-making, it is necessary to predict the production condition at which sand production occurs. Sanding onset prediction involves simulating the stress state on the surface of an oil/gas producing cavity (e.g. borehole, perforation tunnel) and applying appropriate sand production criterion to predict the fluid pressure or pressure gradient at which sand production occurs. In this work, we present numerical and analytical poroelastoplastic stress models describing stress around producing cavity and verify those models against each other. Using those models, we evaluate the stress state on the cavity surface and derive sanding onset prediction models in terms of fluid pressure or pressure gradient based on the given sand production criterion. We then run field case studies and validate the sanding onset prediction models. Rock strength criterion plays important roles in sanding onset prediction. We investigate how the sanding onset prediction results vary with the selection of one or another rock strength criterion. In this work, we present four commonly used rock strength criteria in sanding onset prediction and wellbore stability studies: Mohr-Coulomb, Hoek-Brown, Drucker-Prager, and Modified Lade criteria. In each of the criterion, there are two or more parameters involved. In the literature, a two-step procedure is applied to determine the parameters in the rock strength criterion. First, the Mohr-Coulomb parameters like cohesion So and internal friction angle ff are regressed from the laboratory test data. Then, the parameters in other criteria are calculated using the regressed Mohr-Coulomb parameters. We propose that the best way to evaluate the parameters in a specific rock strength criterion is to perform direct regression of the laboratory test data using that criterion. Using this methodology, we demonstrate that the effect of various rock strength criteria on sanding onset prediction is less dramatic than using the commonly used method. With this methodology, the uncertainties of the effect of rock strength criterion on sanding onset prediction are also reduced. Advisors/Committee Members: Valkó, Peter P. (advisor), Russell, James E. (advisor), Lee, W. John (committee member), Lagoudas, Dimitris C. (committee member).

Subjects/Keywords: Sand Production; Sanding; Sanding Onset Prediction; Failure Criterion

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

APA (6^th Edition):

Yi, X. (2004). Numerical and analytical modeling of sanding onset prediction. (Doctoral Dissertation). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/369

Chicago Manual of Style (16^th Edition):

Yi, Xianjie. “Numerical and analytical modeling of sanding onset prediction.” 2004. Doctoral Dissertation, Texas A&M University. Accessed March 07, 2021. http://hdl.handle.net/1969.1/369.

MLA Handbook (7^th Edition):

Yi, Xianjie. “Numerical and analytical modeling of sanding onset prediction.” 2004. Web. 07 Mar 2021.

Vancouver:

Yi X. Numerical and analytical modeling of sanding onset prediction. [Internet] [Doctoral dissertation]. Texas A&M University; 2004. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/1969.1/369.

Council of Science Editors:

Yi X. Numerical and analytical modeling of sanding onset prediction. [Doctoral Dissertation]. Texas A&M University; 2004. Available from: http://hdl.handle.net/1969.1/369

Universidade Nova

30. Silva, André Alves. Dynamic Analysis of Numerical Mesoscale Models of Composite Materials.

Degree: 2017, Universidade Nova

URL: http://www.rcaap.pt/detail.jsp?id=oai:run.unl.pt:10362/19717

► The role of composites in the industry has been increasing over the past few years. One of the main reasons for this phenomenon is due… (more)

Subjects/Keywords: Delamination; Hourglass; Failure criterion; Explicit dynamic analysis; Mesoscale; Domínio/Área Científica::Engenharia e Tecnologia::Engenharia Mecânica

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

APA (6^th Edition):

Silva, A. A. (2017). Dynamic Analysis of Numerical Mesoscale Models of Composite Materials. (Thesis). Universidade Nova. Retrieved from http://www.rcaap.pt/detail.jsp?id=oai:run.unl.pt:10362/19717

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):

Silva, André Alves. “Dynamic Analysis of Numerical Mesoscale Models of Composite Materials.” 2017. Thesis, Universidade Nova. Accessed March 07, 2021. http://www.rcaap.pt/detail.jsp?id=oai:run.unl.pt:10362/19717.

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

MLA Handbook (7^th Edition):

Silva, André Alves. “Dynamic Analysis of Numerical Mesoscale Models of Composite Materials.” 2017. Web. 07 Mar 2021.

Vancouver:

Silva AA. Dynamic Analysis of Numerical Mesoscale Models of Composite Materials. [Internet] [Thesis]. Universidade Nova; 2017. [cited 2021 Mar 07]. Available from: http://www.rcaap.pt/detail.jsp?id=oai:run.unl.pt:10362/19717.

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

Council of Science Editors:

Silva AA. Dynamic Analysis of Numerical Mesoscale Models of Composite Materials. [Thesis]. Universidade Nova; 2017. Available from: http://www.rcaap.pt/detail.jsp?id=oai:run.unl.pt:10362/19717

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

Open Access Theses and Dissertations