subject:(MECHANICAL MATERIALS TESTING MECHANICAL PROPERTIES OF MATERIALS MATERIALS SCIENCE )

Ryerson University

1. Fereidooni, Alireza. Nonlinear Instability and Reliability Analysis of Composite Laminated Beams.

Degree: 2009, Ryerson University

URL: https://digital.library.ryerson.ca/islandora/object/RULA%3A2285

► The wide range of high performance engineering applications of composite laminated structures demands a proper understanding of their dynamics performance. Due to the complexity and… (more)

▼ The wide range of high performance engineering applications of composite laminated structures demands a proper understanding of their dynamics performance. Due to the complexity and nonlinear behaviour of such structures, developing a mathematical model to determine the dynamic instability boundaries is indispensable and challenging. The aim of this research is to investigate the dynamic behaviour of shear deformable composite laminated beams subjected to varying time conservative and nonconservative loads. The dynamic instability behaviour of non-conservative and conservative system are dissimilar. In case of conservative loading, the instability region intersects the loading axis, but in case of non-conservative loads the region will be increased with loading increases.The extended Hamilton’s principle and the first order shear deformation theory are employed in this investigation to establish the integral form of the equation of motion of the beam. A five node beam model is presented to descritize the integral form of the governing equations. The model has the capability to capture the dynamic effects of the transverse shear stress, warping, and bending-twisting, bending-stretching, and stretching-twisting couplings. Also, the geometric and loading nonlinearities are included in the equation of system. The beam model incorporates, in full form, the non-classical effects of warping on stability and dynamic response of symmetrical and unsymmetrical composite beams. In case of nonlinear elasticity, the resonance curves are bent toward the increasing exciting frequencies.The response of the stable beam is pure periodic and follow the loading frequency. When the beam is asymptotically stable the response of the beam is aperiodic and does not follow the loading frequency. In unstable state of the beam response frequency increases with time and is higher than the loading frequency, also the amplitude of the beam will increases, end to beam failure. The amplitude of the beam subjected to substantial excitation loading parameters increases in a typical nonlinear manner and leads to the beats phenomena.The principal regions of dynamic instability are determined for various loading and boundary conditions using the Floquet’s theory. The beam response in the regions of instability is investigated. Axially loaded beam may be unstable not just in load equal to critical load and/or loading frequency equal to beam natural frequency. In fact there are infinite points in region of instability in plane load vs. frequency that the beam can be unstable. The region of instability of the shear deformable beams is wider compare to non-shear deformable beams. The lower bound of the instability region of the shear deformable beams changes faster than upper bound.Probabilistic stability analysis of the uncertain laminated beams subject to both conservative and nonconservative loads is studied. The effects of material and geometry uncertainties on dynamics instability of the beam, is investigated through a probabilistic finite element… Advisors/Committee Members: Ryerson University (Degree grantor).

Subjects/Keywords: Composite materials – Testing; Composite materials – Mechanical properties; Strength of materials

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APA (6^th Edition):

Fereidooni, A. (2009). Nonlinear Instability and Reliability Analysis of Composite Laminated Beams. (Thesis). Ryerson University. Retrieved from https://digital.library.ryerson.ca/islandora/object/RULA%3A2285

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):

Fereidooni, Alireza. “Nonlinear Instability and Reliability Analysis of Composite Laminated Beams.” 2009. Thesis, Ryerson University. Accessed March 07, 2021. https://digital.library.ryerson.ca/islandora/object/RULA%3A2285.

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

MLA Handbook (7^th Edition):

Fereidooni, Alireza. “Nonlinear Instability and Reliability Analysis of Composite Laminated Beams.” 2009. Web. 07 Mar 2021.

Vancouver:

Fereidooni A. Nonlinear Instability and Reliability Analysis of Composite Laminated Beams. [Internet] [Thesis]. Ryerson University; 2009. [cited 2021 Mar 07]. Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A2285.

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

Council of Science Editors:

Fereidooni A. Nonlinear Instability and Reliability Analysis of Composite Laminated Beams. [Thesis]. Ryerson University; 2009. Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A2285

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

Michigan State University

2. Schmidt, Robert David. Processing and nanostructure influences on mechanical properties of thermoelectric materials.

Degree: 2014, Michigan State University

URL: http://etd.lib.msu.edu/islandora/object/etd:2972

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Thesis Ph. D. Michigan State University. Materials Science and Engineering 2014.

Thermoelectric (TE) materials are materials that can generate an electric current from a thermal… (more)

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Thesis Ph. D. Michigan State University. Materials Science and Engineering 2014.

Thermoelectric (TE) materials are materials that can generate an electric current from a thermal gradient, with possible service in recovery of waste heat such as engine exhaust. Significant progress has been made in improving TE conversion efficiency, typically reported according to the figure of merit, ZT, with several recent papers publishing ZT values above 2. Furthermore, cost reductions may be made by the use of lower cost elements such as Mg, Si, Sn, Pb, Se and S in TE materials, while achieving ZT values between 1.3 and 1.8. To be used in a device, the thermoelectric material must be able to withstand the applied thermal and mechanical forces without failure. However, these materials are brittle, with low fracture toughness typically less than 1.5 MPa-m^1/2, and often less than 0.5 MPa-m^1/2. For comparison, window glass is approximately 0.75 MPa-m^1/2. They have been optimized with nanoprecipitates, nanoparticles, doping, alterations in stoichiometry, powder processing and other techniques, all of which may alter the mechanical properties. In this study, the effect of SiC nanoparticle additions in Mg₂Si, SnTe and Ag nanoparticle additions in the skutterudite Ba_0.3Co₄Sb₁₂ on the elastic moduli, hardness and fracture toughness are measured. Large changes (~20%) in the elastic moduli in SnTe_1+x as a function of x at 0 and 0.016 are shown. The effect on mechanical properties of doping and precipitates of CdS or ZnS in a PbS or PbSe matrix have been reported.Changes in sintering behavior of the skutterudite with the Ag nanoparticle additions were explored. Possible liquid phase sintering, with associated benefits in lower processing temperature, faster densification and lower cost, has been shown. A technique has been proposed for determining additional liquid phase sintering aids in other TE materials.The effects of porosity, grain size, powder processing method, and sintering method were explored with YbAl₃ and Ba_0.3Co₄Sb₁₂, with the porosity dependence of the elastic moduli reported. Only one other TE material has the porosity dependence of the elastic moduli previously reported in the literature, lead-antimony-silver-tellurium (LAST), and the effect of different powder processing and sintering methods has never been reported previously on TE materials.

Description based on online resource; title from PDF t.p. (viewed on August 15, 2017)

Advisors/Committee Members: Case, Eldon D, Hogan, Timothy P, Morelli, Donald T, Sakamoto, Jeffrey S.

Subjects/Keywords: Thermoelectric materials – Mechanical properties; Nanostructures; Materials Science

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APA (6^th Edition):

Schmidt, R. D. (2014). Processing and nanostructure influences on mechanical properties of thermoelectric materials. (Thesis). Michigan State University. Retrieved from http://etd.lib.msu.edu/islandora/object/etd:2972

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):

Schmidt, Robert David. “Processing and nanostructure influences on mechanical properties of thermoelectric materials.” 2014. Thesis, Michigan State University. Accessed March 07, 2021. http://etd.lib.msu.edu/islandora/object/etd:2972.

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

MLA Handbook (7^th Edition):

Schmidt, Robert David. “Processing and nanostructure influences on mechanical properties of thermoelectric materials.” 2014. Web. 07 Mar 2021.

Vancouver:

Schmidt RD. Processing and nanostructure influences on mechanical properties of thermoelectric materials. [Internet] [Thesis]. Michigan State University; 2014. [cited 2021 Mar 07]. Available from: http://etd.lib.msu.edu/islandora/object/etd:2972.

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

Council of Science Editors:

Schmidt RD. Processing and nanostructure influences on mechanical properties of thermoelectric materials. [Thesis]. Michigan State University; 2014. Available from: http://etd.lib.msu.edu/islandora/object/etd:2972

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

Drexel University

3. Watters, Arianna Lubomyra. Synthesis and Characterization of a Well-Dispersed Nanostructured Polymer System.

Degree: 2014, Drexel University

URL: http://hdl.handle.net/1860/idea:6101

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Epoxy resins are an important class of thermosetting polymers widely used in structural composite applications such as adhesives, coatings, and encapsulants for a wide variety… (more)

Subjects/Keywords: Materials science; Composite materials – Mechanical properties; Nanoscience

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APA (6^th Edition):

Watters, A. L. (2014). Synthesis and Characterization of a Well-Dispersed Nanostructured Polymer System. (Thesis). Drexel University. Retrieved from http://hdl.handle.net/1860/idea:6101

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):

Watters, Arianna Lubomyra. “Synthesis and Characterization of a Well-Dispersed Nanostructured Polymer System.” 2014. Thesis, Drexel University. Accessed March 07, 2021. http://hdl.handle.net/1860/idea:6101.

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

MLA Handbook (7^th Edition):

Watters, Arianna Lubomyra. “Synthesis and Characterization of a Well-Dispersed Nanostructured Polymer System.” 2014. Web. 07 Mar 2021.

Vancouver:

Watters AL. Synthesis and Characterization of a Well-Dispersed Nanostructured Polymer System. [Internet] [Thesis]. Drexel University; 2014. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/1860/idea:6101.

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

Council of Science Editors:

Watters AL. Synthesis and Characterization of a Well-Dispersed Nanostructured Polymer System. [Thesis]. Drexel University; 2014. Available from: http://hdl.handle.net/1860/idea:6101

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

Drexel University

4. Bellafatto, Amanda. The Role of Homogeneous and Heterogeneous Toughening Mechanisms on DGEBA Fracture.

Degree: 2018, Drexel University

URL: https://idea.library.drexel.edu/islandora/object/idea%3A8248

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As composite materials become increasingly utilized in engineering applications, it is imperative to understand the role composition has on their fracture and failure behavior. Epoxies,… (more)

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As composite materials become increasingly utilized in engineering applications, it is imperative to understand the role composition has on their fracture and failure behavior. Epoxies, a group of thermosetting polymers, are commonly used in composites as a polymeric binding or matrix material due to their chemical stability and relative material strength. At the same time, their rate-dependent behavior is comparatively unexplored. Moreover, the mechanical properties of all polymers are highly dependent on their chemical makeup, including crosslinking and polymer chain organization. Consequently, this study investigates homogeneous and heterogeneous toughening mechanisms on variants of the epoxy DGEBA under quasi-static and dynamic fracture. Heterogeneous toughening mechanisms were explored via the addition of glass inclusions at three volumes: 5, 15, and 30 percent. Inclusions 7-10 μm in diameter were investigated as this size modifies the polymer structure via crosslinking density and chain organization, and inclusions 30-50 μm in diameter were examined as this size can introduce potential crack bridging and crack path obstacles. Homogeneous toughening mechanisms via diamine hardeners were examined in PACM, D230, and D400. PACM and D230 have similar diamine lengths, but vary in rigidity, and D230 and D400 have the same rigidity and structure, but vary in length. In all cases, quasi-static and dynamic fracture experiments using Single Edge Notch Tensile (SENT) specimens were conducted, and x-ray computed tomography (microCT) was used to investigate samples both pre- and post-mortem. Ultra-high-speed (UHS) imaging along with digital image correlation (DIC), a full-field imaging technique that tracks 2D surface kinematics during loading, were employed to extract fracture behavior. Overall, an increase in fracture loading from quasi-static to dynamic decreased the dependency on bead size for heterogeneous toughening mechanisms, but highlighted the effects of clumping in high volume percent samples; meanwhile homogeneous toughening mechanisms appeared to have higher rate dependency in fracture properties of amines with longer chains and lower rigidity.

M.S., Mechanical Engineering and Mechanics – Drexel University, 2018

Advisors/Committee Members: Lamberson, Leslie, College of Engineering.

Subjects/Keywords: Mechanical engineering; Materials science; Composite materials; Composite materials – Mechanical properties

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

APA (6^th Edition):

Bellafatto, A. (2018). The Role of Homogeneous and Heterogeneous Toughening Mechanisms on DGEBA Fracture. (Thesis). Drexel University. Retrieved from https://idea.library.drexel.edu/islandora/object/idea%3A8248

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):

Bellafatto, Amanda. “The Role of Homogeneous and Heterogeneous Toughening Mechanisms on DGEBA Fracture.” 2018. Thesis, Drexel University. Accessed March 07, 2021. https://idea.library.drexel.edu/islandora/object/idea%3A8248.

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

MLA Handbook (7^th Edition):

Bellafatto, Amanda. “The Role of Homogeneous and Heterogeneous Toughening Mechanisms on DGEBA Fracture.” 2018. Web. 07 Mar 2021.

Vancouver:

Bellafatto A. The Role of Homogeneous and Heterogeneous Toughening Mechanisms on DGEBA Fracture. [Internet] [Thesis]. Drexel University; 2018. [cited 2021 Mar 07]. Available from: https://idea.library.drexel.edu/islandora/object/idea%3A8248.

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

Council of Science Editors:

Bellafatto A. The Role of Homogeneous and Heterogeneous Toughening Mechanisms on DGEBA Fracture. [Thesis]. Drexel University; 2018. Available from: https://idea.library.drexel.edu/islandora/object/idea%3A8248

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

Hong Kong University of Science and Technology

5. Wang, Lu. Design, fabrication and application of micro-fabricated nanomaterials tensile testing device.

Degree: 2015, Hong Kong University of Science and Technology

URL: http://repository.ust.hk/ir/Record/1783.1-74989 ; https://doi.org/10.14711/thesis-b1487517 ; http://repository.ust.hk/ir/bitstream/1783.1-74989/1/th_redirect.html

► Due to their excellent properties of nanomaterials, such as small size, low density, and high strength, they have an extensive usage in micro-electronics, data storage,… (more)

Subjects/Keywords: Nanostructured materials ; Testing ; Mechanical properties ; Microelectromechanical systems

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APA (6^th Edition):

Wang, L. (2015). Design, fabrication and application of micro-fabricated nanomaterials tensile testing device. (Thesis). Hong Kong University of Science and Technology. Retrieved from http://repository.ust.hk/ir/Record/1783.1-74989 ; https://doi.org/10.14711/thesis-b1487517 ; http://repository.ust.hk/ir/bitstream/1783.1-74989/1/th_redirect.html

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

Chicago Manual of Style (16^th Edition):

Wang, Lu. “Design, fabrication and application of micro-fabricated nanomaterials tensile testing device.” 2015. Thesis, Hong Kong University of Science and Technology. Accessed March 07, 2021. http://repository.ust.hk/ir/Record/1783.1-74989 ; https://doi.org/10.14711/thesis-b1487517 ; http://repository.ust.hk/ir/bitstream/1783.1-74989/1/th_redirect.html.

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

MLA Handbook (7^th Edition):

Wang, Lu. “Design, fabrication and application of micro-fabricated nanomaterials tensile testing device.” 2015. Web. 07 Mar 2021.

Vancouver:

Wang L. Design, fabrication and application of micro-fabricated nanomaterials tensile testing device. [Internet] [Thesis]. Hong Kong University of Science and Technology; 2015. [cited 2021 Mar 07]. Available from: http://repository.ust.hk/ir/Record/1783.1-74989 ; https://doi.org/10.14711/thesis-b1487517 ; http://repository.ust.hk/ir/bitstream/1783.1-74989/1/th_redirect.html.

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

Council of Science Editors:

Wang L. Design, fabrication and application of micro-fabricated nanomaterials tensile testing device. [Thesis]. Hong Kong University of Science and Technology; 2015. Available from: http://repository.ust.hk/ir/Record/1783.1-74989 ; https://doi.org/10.14711/thesis-b1487517 ; http://repository.ust.hk/ir/bitstream/1783.1-74989/1/th_redirect.html

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

Western Carolina University

6. Lackey, Alton Dale. Comparative study of mechanical properties of 316L stainless steel between traditional production methods and selective laser melting.

Degree: 2016, Western Carolina University

URL: http://libres.uncg.edu/ir/listing.aspx?styp=ti&id=19476

► Additive manufacturing, also known as 3D printing, is a technology which has recently seen expanding use, as well as expansion of the materials and methods… (more)

Subjects/Keywords: Stainless steel – Mechanical properties; Strength of materials; Stainless steel – Testing

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

APA (6^th Edition):

Lackey, A. D. (2016). Comparative study of mechanical properties of 316L stainless steel between traditional production methods and selective laser melting. (Masters Thesis). Western Carolina University. Retrieved from http://libres.uncg.edu/ir/listing.aspx?styp=ti&id=19476

Chicago Manual of Style (16^th Edition):

Lackey, Alton Dale. “Comparative study of mechanical properties of 316L stainless steel between traditional production methods and selective laser melting.” 2016. Masters Thesis, Western Carolina University. Accessed March 07, 2021. http://libres.uncg.edu/ir/listing.aspx?styp=ti&id=19476.

MLA Handbook (7^th Edition):

Lackey, Alton Dale. “Comparative study of mechanical properties of 316L stainless steel between traditional production methods and selective laser melting.” 2016. Web. 07 Mar 2021.

Vancouver:

Lackey AD. Comparative study of mechanical properties of 316L stainless steel between traditional production methods and selective laser melting. [Internet] [Masters thesis]. Western Carolina University; 2016. [cited 2021 Mar 07]. Available from: http://libres.uncg.edu/ir/listing.aspx?styp=ti&id=19476.

Council of Science Editors:

Lackey AD. Comparative study of mechanical properties of 316L stainless steel between traditional production methods and selective laser melting. [Masters Thesis]. Western Carolina University; 2016. Available from: http://libres.uncg.edu/ir/listing.aspx?styp=ti&id=19476

7. Lackey, Alton Dale. Comparative study of mechanical properties of 316L stainless steel between traditional production methods and selective laser melting.

Degree: 2016, NC Docks

URL: http://libres.uncg.edu/ir/wcu/f/Lackey2016.pdf

► Additive manufacturing, also known as 3D printing, is a technology which has recently seen expanding use, as well as expansion of the materials and methods… (more)

Subjects/Keywords: Stainless steel – Mechanical properties; Strength of materials; Stainless steel – Testing

Record Details Similar Records Cite « Share

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

APA (6^th Edition):

Lackey, A. D. (2016). Comparative study of mechanical properties of 316L stainless steel between traditional production methods and selective laser melting. (Thesis). NC Docks. Retrieved from http://libres.uncg.edu/ir/wcu/f/Lackey2016.pdf

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):

Lackey, Alton Dale. “Comparative study of mechanical properties of 316L stainless steel between traditional production methods and selective laser melting.” 2016. Thesis, NC Docks. Accessed March 07, 2021. http://libres.uncg.edu/ir/wcu/f/Lackey2016.pdf.

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

MLA Handbook (7^th Edition):

Lackey, Alton Dale. “Comparative study of mechanical properties of 316L stainless steel between traditional production methods and selective laser melting.” 2016. Web. 07 Mar 2021.

Vancouver:

Lackey AD. Comparative study of mechanical properties of 316L stainless steel between traditional production methods and selective laser melting. [Internet] [Thesis]. NC Docks; 2016. [cited 2021 Mar 07]. Available from: http://libres.uncg.edu/ir/wcu/f/Lackey2016.pdf.

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

Council of Science Editors:

Lackey AD. Comparative study of mechanical properties of 316L stainless steel between traditional production methods and selective laser melting. [Thesis]. NC Docks; 2016. Available from: http://libres.uncg.edu/ir/wcu/f/Lackey2016.pdf

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

Columbia University

8. Tal, David. Uncertainty Quantification in Composite Materials.

Degree: 2018, Columbia University

URL: https://doi.org/10.7916/D8CN8MF9

► The random nature of the micro-structural attributes in materials in general and composite material systems in particular requires expansion of material modeling in a way… (more)

▼ The random nature of the micro-structural attributes in materials in general and composite material systems in particular requires expansion of material modeling in a way that will incorporate their inherent uncertainty and predict its impact on material properties and mechanical response in multiple scales. Despite the importance of capturing and modeling material randomness, there are numerous challenges in structural characterization that are yet to be addressed. The work presented in this essay takes a few steps towards an improved material modeling approach which encompasses structural randomness in order to produce a more realistic representation of material systems. For this end a computational framework was developed to generate a realistic representative volume element which reflects the inherent structural randomness. First stochastic structural elements were identified and registered from imaging data and parameters were assigned to represent those elements. Statistical characterization of the random attributes was followed by the construction of a representative volume element which shared the same structural statistical characteristics with the original material system. The resultant statistical equivalent representative volume element (SERVE) was then used in finite element simulations which provided homogenized properties and mechanical response predictions. The suggested framework was developed and then implemented on 3 different material systems. Image processing and analysis in one of the material systems extended the original scope of this work to solving a machine vision and learning problem. Object segmentation for the purpose object and pattern recognition has been a long standing subject of interest in the field of machine vision. Despite the significant attention given to the development of segmentation and recognition methods, the critical challenge of separating merged objects did not share the spotlight. A simple yet original approach to overcome this hurdle was developed using unsupervised classification and separation of objects in 3D. Lower dimensionality classifiers were joined to provide a powerful higher dimensionality classification tool. The robustness of this approach is illustrated through its implementation on two case studies of merged objects. Applications of this methodology can further extend from structural classification to general problems of clustering and classification in various fields.

Subjects/Keywords: Statistics; Composite materials; Materials – Mechanical properties; Materials science

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

APA (6^th Edition):

Tal, D. (2018). Uncertainty Quantification in Composite Materials. (Doctoral Dissertation). Columbia University. Retrieved from https://doi.org/10.7916/D8CN8MF9

Chicago Manual of Style (16^th Edition):

Tal, David. “Uncertainty Quantification in Composite Materials.” 2018. Doctoral Dissertation, Columbia University. Accessed March 07, 2021. https://doi.org/10.7916/D8CN8MF9.

MLA Handbook (7^th Edition):

Tal, David. “Uncertainty Quantification in Composite Materials.” 2018. Web. 07 Mar 2021.

Vancouver:

Tal D. Uncertainty Quantification in Composite Materials. [Internet] [Doctoral dissertation]. Columbia University; 2018. [cited 2021 Mar 07]. Available from: https://doi.org/10.7916/D8CN8MF9.

Council of Science Editors:

Tal D. Uncertainty Quantification in Composite Materials. [Doctoral Dissertation]. Columbia University; 2018. Available from: https://doi.org/10.7916/D8CN8MF9

Clemson University

9. Shabanisamghabady, Mitra. Dislocation Slip and Deformation Twinning in Face Centered Cubic Low Stacking Fault Energy High Entropy Alloys.

Degree: PhD, Mechanical Engineering, 2020, Clemson University

URL: https://tigerprints.clemson.edu/all_dissertations/2756

► There is an ongoing need for the design and development of metal alloys with improved properties for extreme environment applications. High entropy alloys (HEAs)… (more)

▼ There is an ongoing need for the design and development of metal alloys with improved properties for extreme environment applications. High entropy alloys (HEAs) are a group of metal alloys that in contrary to conventional metal alloys can have multiple principal elements in high concentrations. HEAs show promising properties better than or comparable to conventional metal alloys for a range of temperature down to cryogenic temperature. HEAs are good candidates to be used as structural materials for extreme environments applications such as in aerospace, automotive, transportation, and energy industries, among others. Mechanical behavior and the underlying plastic deformation mechanisms and the factors affecting HEAs need to be fully understood to be able to use these alloys for the mentioned applications and to design and develop further improved metal alloys.Low stacking fault energy face centered cubic (fcc) HEAs show simultaneous high strength and ductility and specially by the decrease in temperature down to cryogenic temperatures, whereas there is usually a tradeoff between strength and ductility in conventional metal alloys. Plastic deformation in low stacking fault energy fcc HEAs starts with dislocation slip and with the increase in stress, deformation twins nucleate and grow as an additional mode of deformation. There have been studies that experimentally and computationally looked at slip and deformation twins and the effect of different parameters on their nucleation and growth in HEAs. However, the critical resolved shear stress for slip which indicates the beginning of the plastic deformation region in some of these HEAs has not been found. Also, different factors in deformation twin nucleation and growth have been studied but the effect of grain boundary (GB) types and elemental segregation at GBs have not been fully investigated. In this research experimental and computational approaches are used to further identify the underlying plastic deformation mechanisms in HEAs giving rise to their improved properties. High resolution digital image correlation and electron backscatter diffraction have been used to find the dislocation slip critical resolved shear stress (CRSS) in Al0.3CoCrFeNi polycrystalline under tension. Molecular dynamics (MD) simulations and Monte Carlo molecular dynamics (MCMD) simulations have been used to identify the effect of different symmetric twist GB types and elemental segregation on deformation twins in CoCrFeNi bicrystals at three different temperatures 77 K, 100 K, and 300 K. Experimentally Al0.3CoCrFeNi polycrystalline was tested under tension at room temperature slip CRSS was found to be 63±2 MPa based on the activated slip system of (-1 1 1)[-1 -1 0] which also had the highest Schmid factor of 0.42. The MD simulations and the MCMD simulations studies on the CoCrFeNi HEA bicrystals confirmed GBs as deformation twin nucleation sites. The mechanical properties and deformation twin nucleation changed with different symmetric twist GBs having different sigma values and… Advisors/Committee Members: Huijuan Zhao, Gang Li, Qiushi Chen.

Subjects/Keywords: Computational Materials Science; High Entropy Alloys; Mechanical Properties; Mechanical Testing; Plastic Deformation; Twinning

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

APA (6^th Edition):

Shabanisamghabady, M. (2020). Dislocation Slip and Deformation Twinning in Face Centered Cubic Low Stacking Fault Energy High Entropy Alloys. (Doctoral Dissertation). Clemson University. Retrieved from https://tigerprints.clemson.edu/all_dissertations/2756

Chicago Manual of Style (16^th Edition):

Shabanisamghabady, Mitra. “Dislocation Slip and Deformation Twinning in Face Centered Cubic Low Stacking Fault Energy High Entropy Alloys.” 2020. Doctoral Dissertation, Clemson University. Accessed March 07, 2021. https://tigerprints.clemson.edu/all_dissertations/2756.

MLA Handbook (7^th Edition):

Shabanisamghabady, Mitra. “Dislocation Slip and Deformation Twinning in Face Centered Cubic Low Stacking Fault Energy High Entropy Alloys.” 2020. Web. 07 Mar 2021.

Vancouver:

Shabanisamghabady M. Dislocation Slip and Deformation Twinning in Face Centered Cubic Low Stacking Fault Energy High Entropy Alloys. [Internet] [Doctoral dissertation]. Clemson University; 2020. [cited 2021 Mar 07]. Available from: https://tigerprints.clemson.edu/all_dissertations/2756.

Council of Science Editors:

Shabanisamghabady M. Dislocation Slip and Deformation Twinning in Face Centered Cubic Low Stacking Fault Energy High Entropy Alloys. [Doctoral Dissertation]. Clemson University; 2020. Available from: https://tigerprints.clemson.edu/all_dissertations/2756

University of Washington

10. Zhang, Xiaolin. Bioinspired and Biological Chitin and Chitosan Based Composites – Chemistry, Microstructure and Mineralization.

Degree: PhD, 2017, University of Washington

URL: http://hdl.handle.net/1773/40235

► From the stiffness span of squid beaks to the toughness of seashells and the hardness of chiton teeth, natural biological materials have a broad range… (more)

Subjects/Keywords: bioinspired materials; biological materials; chitin; chitosan; mechanical properties; Materials Science; Materials science and engineering

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APA (6^th Edition):

Zhang, X. (2017). Bioinspired and Biological Chitin and Chitosan Based Composites – Chemistry, Microstructure and Mineralization. (Doctoral Dissertation). University of Washington. Retrieved from http://hdl.handle.net/1773/40235

Chicago Manual of Style (16^th Edition):

Zhang, Xiaolin. “Bioinspired and Biological Chitin and Chitosan Based Composites – Chemistry, Microstructure and Mineralization.” 2017. Doctoral Dissertation, University of Washington. Accessed March 07, 2021. http://hdl.handle.net/1773/40235.

MLA Handbook (7^th Edition):

Zhang, Xiaolin. “Bioinspired and Biological Chitin and Chitosan Based Composites – Chemistry, Microstructure and Mineralization.” 2017. Web. 07 Mar 2021.

Vancouver:

Zhang X. Bioinspired and Biological Chitin and Chitosan Based Composites – Chemistry, Microstructure and Mineralization. [Internet] [Doctoral dissertation]. University of Washington; 2017. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/1773/40235.

Council of Science Editors:

Zhang X. Bioinspired and Biological Chitin and Chitosan Based Composites – Chemistry, Microstructure and Mineralization. [Doctoral Dissertation]. University of Washington; 2017. Available from: http://hdl.handle.net/1773/40235

Ryerson University

11. Xu, Wen. Microstructure And Mechanical Properites Of Welded Advanced Materials For Automotive Applications.

Degree: 2012, Ryerson University

URL: https://digital.library.ryerson.ca/islandora/object/RULA%3A2229

► Growing use of advanced materials (advanced high strength steel DP980 and ultralight-weight magnesium alloys) and innovative joining techniques (new-generation laser welding technology and weld bonding… (more)

Subjects/Keywords: Steel – Microstructure; Materials – Mechanical properties; Welded joints – Testing; Automobiles – Materials – Fatigue

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APA (6^th Edition):

Xu, W. (2012). Microstructure And Mechanical Properites Of Welded Advanced Materials For Automotive Applications. (Thesis). Ryerson University. Retrieved from https://digital.library.ryerson.ca/islandora/object/RULA%3A2229

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):

Xu, Wen. “Microstructure And Mechanical Properites Of Welded Advanced Materials For Automotive Applications.” 2012. Thesis, Ryerson University. Accessed March 07, 2021. https://digital.library.ryerson.ca/islandora/object/RULA%3A2229.

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

MLA Handbook (7^th Edition):

Xu, Wen. “Microstructure And Mechanical Properites Of Welded Advanced Materials For Automotive Applications.” 2012. Web. 07 Mar 2021.

Vancouver:

Xu W. Microstructure And Mechanical Properites Of Welded Advanced Materials For Automotive Applications. [Internet] [Thesis]. Ryerson University; 2012. [cited 2021 Mar 07]. Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A2229.

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

Council of Science Editors:

Xu W. Microstructure And Mechanical Properites Of Welded Advanced Materials For Automotive Applications. [Thesis]. Ryerson University; 2012. Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A2229

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

University of Johannesburg

12. Theyse, Hechter Luciën. A mechanistic-empirical design model for unbound granular pavement layers.

Degree: 2010, University of Johannesburg

URL: http://hdl.handle.net/10210/3095

►

D.Ing.

Unbound granular material has and is still being used with great success in the construction of road pavements in South Africa and many other… (more)

▼

D.Ing.

Unbound granular material has and is still being used with great success in the construction of road pavements in South Africa and many other countries around the world. Often this material is used in the main structural layers of the pavement with very little protection provided against high traffic induced stresses by way of a surface treatment or thin asphalt concrete layer. The performance of unbound granular pavement layers depend mainly on the level of densification and degree of saturation of the material in addition to the stress levels to which the layers are subjected. The main form of distress of unbound granular layers is the permanent deformation of the layer, either through the gradual deformation or rapid shear failure of the layer. Design engineers need accurate and appropriate design procedures to safeguard the road against such rapid shear failure and to ensure that the road has sufficient structural capacity to support the traffic loading over the structural design period. The recent trend in pavement design has been to move away from empirical design methods towards rational mechanistic-empirical design methods that attempt to relate cause and effect. Although a mechanistic-empirical pavement design method has been available in South Africa since the midseventies, increasing criticism has been levelled against the method recently. The models for characterising the resilient response and shear strength and estimating the structural capacity of unbound material have been of particular concern. The purpose of the research reported in this thesis was therefore to develop an improved mechanistic-empirical design model, reflecting the characteristics and behaviour of unbound granular material. The new design model consists of three components namely a resilient modulus, yield strength and plastic deformation damage model with each model including the effects of the density and moisture content of the material unbound granular where appropriate. The models were calibrated for a range of unbound materials from fine-grained sand and calcrete mixture to commercial crushed stone products using the results from static and dynamic tri-axial tests. An approximation of the suction pressure of partially saturated unbound material was introduced in the yield strength model and was validated with independent matric suction measurements on the sand and calcrete mixture. The yield strength model which is a function of the density and moisture conditions as well as the confinement pressure was calibrated for the individual materials with a high accuracy. A single plastic strain damage model was calibrated for the combined plastic strain data from all the crushed stone materials but a single model could not be calibrated for the plastic strain data of the natural gravels as these materials vary too much in terms of particle size distribution and the properties of the fines found in these materials. The formulation of the plastic strain damage model includes the density and degree of saturation of the…

Subjects/Keywords: Pavements design and construction; Granular materials mechanical properties; Granular materials testing

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APA (6^th Edition):

Theyse, H. L. (2010). A mechanistic-empirical design model for unbound granular pavement layers. (Thesis). University of Johannesburg. Retrieved from http://hdl.handle.net/10210/3095

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):

Theyse, Hechter Luciën. “A mechanistic-empirical design model for unbound granular pavement layers.” 2010. Thesis, University of Johannesburg. Accessed March 07, 2021. http://hdl.handle.net/10210/3095.

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

MLA Handbook (7^th Edition):

Theyse, Hechter Luciën. “A mechanistic-empirical design model for unbound granular pavement layers.” 2010. Web. 07 Mar 2021.

Vancouver:

Theyse HL. A mechanistic-empirical design model for unbound granular pavement layers. [Internet] [Thesis]. University of Johannesburg; 2010. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/10210/3095.

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

Council of Science Editors:

Theyse HL. A mechanistic-empirical design model for unbound granular pavement layers. [Thesis]. University of Johannesburg; 2010. Available from: http://hdl.handle.net/10210/3095

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

Hong Kong University of Science and Technology

13. Gao, Yao MAE. Mechanical and electrochemical properties of suspended gold nanobridges.

Degree: 2016, Hong Kong University of Science and Technology

URL: http://repository.ust.hk/ir/Record/1783.1-95097 ; https://doi.org/10.14711/thesis-b1627781 ; http://repository.ust.hk/ir/bitstream/1783.1-95097/1/th_redirect.html

► During the period of my PhD study, I have designed and successfully fabricated the supported gold nanowire and the suspended gold nanobridge samples specifically for… (more)

Subjects/Keywords: Nanowires ; Nanostructured materials ; Mechanical properties ; Nanocomposites (Materials) ; Testing ; Electrochemical analysis

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APA (6^th Edition):

Gao, Y. M. (2016). Mechanical and electrochemical properties of suspended gold nanobridges. (Thesis). Hong Kong University of Science and Technology. Retrieved from http://repository.ust.hk/ir/Record/1783.1-95097 ; https://doi.org/10.14711/thesis-b1627781 ; http://repository.ust.hk/ir/bitstream/1783.1-95097/1/th_redirect.html

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

Chicago Manual of Style (16^th Edition):

Gao, Yao MAE. “Mechanical and electrochemical properties of suspended gold nanobridges.” 2016. Thesis, Hong Kong University of Science and Technology. Accessed March 07, 2021. http://repository.ust.hk/ir/Record/1783.1-95097 ; https://doi.org/10.14711/thesis-b1627781 ; http://repository.ust.hk/ir/bitstream/1783.1-95097/1/th_redirect.html.

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

MLA Handbook (7^th Edition):

Gao, Yao MAE. “Mechanical and electrochemical properties of suspended gold nanobridges.” 2016. Web. 07 Mar 2021.

Vancouver:

Gao YM. Mechanical and electrochemical properties of suspended gold nanobridges. [Internet] [Thesis]. Hong Kong University of Science and Technology; 2016. [cited 2021 Mar 07]. Available from: http://repository.ust.hk/ir/Record/1783.1-95097 ; https://doi.org/10.14711/thesis-b1627781 ; http://repository.ust.hk/ir/bitstream/1783.1-95097/1/th_redirect.html.

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

Council of Science Editors:

Gao YM. Mechanical and electrochemical properties of suspended gold nanobridges. [Thesis]. Hong Kong University of Science and Technology; 2016. Available from: http://repository.ust.hk/ir/Record/1783.1-95097 ; https://doi.org/10.14711/thesis-b1627781 ; http://repository.ust.hk/ir/bitstream/1783.1-95097/1/th_redirect.html

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

Ryerson University

14. Thamilselvan, Gopinath. Methodology For Fabricating High Temperature Composite Panel And Evaluation.

Degree: 2011, Ryerson University

URL: https://digital.library.ryerson.ca/islandora/object/RULA%3A2109

► Ever increasing demand for composite materials in the aerospace industry has lead composite manufacturers to develop numerous innovations in the field of manufacturing. Composites play… (more)

Subjects/Keywords: Heat resistant alloys – Testing; Composite materials – Testing; Materials at high temperatures – Testing; Materials – Fatigue; Materials – Mechanical properties

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APA (6^th Edition):

Thamilselvan, G. (2011). Methodology For Fabricating High Temperature Composite Panel And Evaluation. (Thesis). Ryerson University. Retrieved from https://digital.library.ryerson.ca/islandora/object/RULA%3A2109

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):

Thamilselvan, Gopinath. “Methodology For Fabricating High Temperature Composite Panel And Evaluation.” 2011. Thesis, Ryerson University. Accessed March 07, 2021. https://digital.library.ryerson.ca/islandora/object/RULA%3A2109.

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

MLA Handbook (7^th Edition):

Thamilselvan, Gopinath. “Methodology For Fabricating High Temperature Composite Panel And Evaluation.” 2011. Web. 07 Mar 2021.

Vancouver:

Thamilselvan G. Methodology For Fabricating High Temperature Composite Panel And Evaluation. [Internet] [Thesis]. Ryerson University; 2011. [cited 2021 Mar 07]. Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A2109.

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

Council of Science Editors:

Thamilselvan G. Methodology For Fabricating High Temperature Composite Panel And Evaluation. [Thesis]. Ryerson University; 2011. Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A2109

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

University of Tennessee – Knoxville

15. Kant, Matthew Erich. Single Fiber Mechanical Properties Using Nano-Tensile Testing and Carbon Fiber Structure-Property Relationship.

Degree: 2014, University of Tennessee – Knoxville

URL: https://trace.tennessee.edu/utk_graddiss/3286

► Single carbon fibers are studied using a nano-tensile testing system. This system has unprecedented load and displacement resolution, nN and nm respectively, and the ability… (more)

Subjects/Keywords: fibers; carbon; damping; mechanical properties; Engineering Mechanics; Mechanics of Materials; Other Materials Science and Engineering

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APA (6^th Edition):

Kant, M. E. (2014). Single Fiber Mechanical Properties Using Nano-Tensile Testing and Carbon Fiber Structure-Property Relationship. (Doctoral Dissertation). University of Tennessee – Knoxville. Retrieved from https://trace.tennessee.edu/utk_graddiss/3286

Chicago Manual of Style (16^th Edition):

Kant, Matthew Erich. “Single Fiber Mechanical Properties Using Nano-Tensile Testing and Carbon Fiber Structure-Property Relationship.” 2014. Doctoral Dissertation, University of Tennessee – Knoxville. Accessed March 07, 2021. https://trace.tennessee.edu/utk_graddiss/3286.

MLA Handbook (7^th Edition):

Kant, Matthew Erich. “Single Fiber Mechanical Properties Using Nano-Tensile Testing and Carbon Fiber Structure-Property Relationship.” 2014. Web. 07 Mar 2021.

Vancouver:

Kant ME. Single Fiber Mechanical Properties Using Nano-Tensile Testing and Carbon Fiber Structure-Property Relationship. [Internet] [Doctoral dissertation]. University of Tennessee – Knoxville; 2014. [cited 2021 Mar 07]. Available from: https://trace.tennessee.edu/utk_graddiss/3286.

Council of Science Editors:

Kant ME. Single Fiber Mechanical Properties Using Nano-Tensile Testing and Carbon Fiber Structure-Property Relationship. [Doctoral Dissertation]. University of Tennessee – Knoxville; 2014. Available from: https://trace.tennessee.edu/utk_graddiss/3286

Florida Atlantic University

16. Powell, Felicia M. A study of the effects of nanoparticle modification on the thermal, mechanical and hygrothermal performance of carbon/vinyl ester compounds.

Degree: PhD, 2012, Florida Atlantic University

URL: http://purl.flvc.org/FAU/3352286

►

Summary: Enhancement of mechanical, thermal and hygrothermal properties of carbon fiber/vinyl ester (CFVE) composites through nanoparticle reinforcement has been investigated. CFVE composites are becoming more… (more)

Subjects/Keywords: Composite materials – Mechanical properties; Nanostructured materials – Testing; Carbon compounds – Testing; Fibrous composites – Testing; Surface chemistry

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APA (6^th Edition):

Powell, F. M. (2012). A study of the effects of nanoparticle modification on the thermal, mechanical and hygrothermal performance of carbon/vinyl ester compounds. (Doctoral Dissertation). Florida Atlantic University. Retrieved from http://purl.flvc.org/FAU/3352286

Chicago Manual of Style (16^th Edition):

Powell, Felicia M. “A study of the effects of nanoparticle modification on the thermal, mechanical and hygrothermal performance of carbon/vinyl ester compounds.” 2012. Doctoral Dissertation, Florida Atlantic University. Accessed March 07, 2021. http://purl.flvc.org/FAU/3352286.

MLA Handbook (7^th Edition):

Powell, Felicia M. “A study of the effects of nanoparticle modification on the thermal, mechanical and hygrothermal performance of carbon/vinyl ester compounds.” 2012. Web. 07 Mar 2021.

Vancouver:

Powell FM. A study of the effects of nanoparticle modification on the thermal, mechanical and hygrothermal performance of carbon/vinyl ester compounds. [Internet] [Doctoral dissertation]. Florida Atlantic University; 2012. [cited 2021 Mar 07]. Available from: http://purl.flvc.org/FAU/3352286.

Council of Science Editors:

Powell FM. A study of the effects of nanoparticle modification on the thermal, mechanical and hygrothermal performance of carbon/vinyl ester compounds. [Doctoral Dissertation]. Florida Atlantic University; 2012. Available from: http://purl.flvc.org/FAU/3352286

Florida Atlantic University

17. Khanal, Suraj P. Improving the Mechanical Properties of Nano-Hydroxyapatite.

Degree: 2016, Florida Atlantic University

URL: http://purl.flvc.org/fau/fd/FA00004675 ; (URL) http://purl.flvc.org/fau/fd/FA00004675

►

Summary: Hydroxyapatite (HAp) is an ideal bioactive material that is used in orthopedics. Chemical composition and crystal structure properties of HAp are similar to the… (more)

Subjects/Keywords: Biomedical engineering – Materials; Biomedical materials – Mechanical properties; Nanostructured materials – Mechanical properties

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APA (6^th Edition):

Khanal, S. P. (2016). Improving the Mechanical Properties of Nano-Hydroxyapatite. (Thesis). Florida Atlantic University. Retrieved from http://purl.flvc.org/fau/fd/FA00004675 ; (URL) http://purl.flvc.org/fau/fd/FA00004675

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):

Khanal, Suraj P. “Improving the Mechanical Properties of Nano-Hydroxyapatite.” 2016. Thesis, Florida Atlantic University. Accessed March 07, 2021. http://purl.flvc.org/fau/fd/FA00004675 ; (URL) http://purl.flvc.org/fau/fd/FA00004675.

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

MLA Handbook (7^th Edition):

Khanal, Suraj P. “Improving the Mechanical Properties of Nano-Hydroxyapatite.” 2016. Web. 07 Mar 2021.

Vancouver:

Khanal SP. Improving the Mechanical Properties of Nano-Hydroxyapatite. [Internet] [Thesis]. Florida Atlantic University; 2016. [cited 2021 Mar 07]. Available from: http://purl.flvc.org/fau/fd/FA00004675 ; (URL) http://purl.flvc.org/fau/fd/FA00004675.

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

Council of Science Editors:

Khanal SP. Improving the Mechanical Properties of Nano-Hydroxyapatite. [Thesis]. Florida Atlantic University; 2016. Available from: http://purl.flvc.org/fau/fd/FA00004675 ; (URL) http://purl.flvc.org/fau/fd/FA00004675

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

Ryerson University

18. Tahreen, Nabila. Influence of Yttrium Addition on Texture and Deformation Behavior in an Extruded ZM31 Alloy.

Degree: 2016, Ryerson University

URL: https://digital.library.ryerson.ca/islandora/object/RULA%3A5704

► The current “storm” of lightweighting, a revolution in materials, processes, and business models, which is brewing on the horizon of the auto industry, inspires researchers… (more)

▼ The current “storm” of lightweighting, a revolution in materials, processes, and business models, which is brewing on the horizon of the auto industry, inspires researchers and engineers to develop and apply new wrought magnesium alloys with improved properties. For wider applications in the automotive and aerospace industries, the enhancement of strength, thermal stability and formability of magnesium alloys is required. In recent years, Mg-Zn-Y series alloys have received a considerable attention from the research community due to their improved mechanical properties. The present study was aimed at evaluating the influence of Y addition to Mg-Zn-Mn system based on phase formation, mechanical response and texture development with special attention paid to recrystallization, hot characterization and relative activity. The dissertation evaluated the strain hardening and deformation behavior of as-extruded Mg-ZnMn (ZM31) magnesium alloy with varying Y contents via compression testing at room temperature, 200°C and 300°C. Alloy ZM31+0.3Y consisted I-phase (Mg3YZn6); alloy ZM31+3.2Y contained I-phase and W-phase (Mg3Y2Zn3); alloy ZM31+6Y had long-period stacking-ordered (LPSO) X-phase (Mg12YZn) and Mg24Y5 particles. With increasing Y content the basal texture became weakened significantly. While alloys ZM31+0.3Y and ZM31+3.2Y exhibited a skewed true stress-true stain curve with a three-stage strain hardening feature caused by the occurrence of {10 Ī 2} extension twinning, the true stress-true strain curve of alloy ZM31+6Y was normal due to the dislocation slip during compression. The evolution of flow stress, texture and microstructure during the compression tests has been studied under various conditions of temperature and strain rates. Optical metallography, EBSD techniques and X-ray diffraction were employed to study the microstructural development and texture evolution. The deformation activation energy was calculated and the processing maps were generated to determine the optimum hot working parameters. In addition, viscoplastic selfconsistent model was successfully used to predict the experimental textures. Lastly, the strengthening mechanisms in each Mg-Zn-Mn-Y material are established quantitatively for the first time to account for grain refinement, thermal mismatch, dislocation density, load bearing, and particle strengthening contributions. The present work laid the foundations for a better understanding the role of Y elements on deformation behavior in magnesium alloys.

Subjects/Keywords: Automobiles – Bodies – Materials – Testing; Magnesium alloys – Testing; Magnesium alloys – Mechanical properties; Magnesium alloys – Fatigue; Strength of materials

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

APA (6^th Edition):

Tahreen, N. (2016). Influence of Yttrium Addition on Texture and Deformation Behavior in an Extruded ZM31 Alloy. (Thesis). Ryerson University. Retrieved from https://digital.library.ryerson.ca/islandora/object/RULA%3A5704

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):

Tahreen, Nabila. “Influence of Yttrium Addition on Texture and Deformation Behavior in an Extruded ZM31 Alloy.” 2016. Thesis, Ryerson University. Accessed March 07, 2021. https://digital.library.ryerson.ca/islandora/object/RULA%3A5704.

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

MLA Handbook (7^th Edition):

Tahreen, Nabila. “Influence of Yttrium Addition on Texture and Deformation Behavior in an Extruded ZM31 Alloy.” 2016. Web. 07 Mar 2021.

Vancouver:

Tahreen N. Influence of Yttrium Addition on Texture and Deformation Behavior in an Extruded ZM31 Alloy. [Internet] [Thesis]. Ryerson University; 2016. [cited 2021 Mar 07]. Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A5704.

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

Council of Science Editors:

Tahreen N. Influence of Yttrium Addition on Texture and Deformation Behavior in an Extruded ZM31 Alloy. [Thesis]. Ryerson University; 2016. Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A5704

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

Florida Atlantic University

19. Totten, Kyle. Determination of the tensile strength of the fiber/matrix interface for glass/epoxy & carbon/vinylester.

Degree: MS, 2015, Florida Atlantic University

URL: http://purl.flvc.org/fau/fd/FA00004415 ; (URL) http://purl.flvc.org/fau/fd/FA00004415

►

Summary: The tensile strength of the fiber/matrix interface was determined through the development of an innovativetest procedure.Aminiature tensile coupon with a through-thickness oriented, embedded single… (more)

Subjects/Keywords: Composite materials – Mechanical properties; Composite materials – Testing; Fibrous composites – Mechanical properties; Polymeric composites – Mechanical properties; Viscoelasticity

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

APA (6^th Edition):

Totten, K. (2015). Determination of the tensile strength of the fiber/matrix interface for glass/epoxy & carbon/vinylester. (Masters Thesis). Florida Atlantic University. Retrieved from http://purl.flvc.org/fau/fd/FA00004415 ; (URL) http://purl.flvc.org/fau/fd/FA00004415

Chicago Manual of Style (16^th Edition):

Totten, Kyle. “Determination of the tensile strength of the fiber/matrix interface for glass/epoxy & carbon/vinylester.” 2015. Masters Thesis, Florida Atlantic University. Accessed March 07, 2021. http://purl.flvc.org/fau/fd/FA00004415 ; (URL) http://purl.flvc.org/fau/fd/FA00004415.

MLA Handbook (7^th Edition):

Totten, Kyle. “Determination of the tensile strength of the fiber/matrix interface for glass/epoxy & carbon/vinylester.” 2015. Web. 07 Mar 2021.

Vancouver:

Totten K. Determination of the tensile strength of the fiber/matrix interface for glass/epoxy & carbon/vinylester. [Internet] [Masters thesis]. Florida Atlantic University; 2015. [cited 2021 Mar 07]. Available from: http://purl.flvc.org/fau/fd/FA00004415 ; (URL) http://purl.flvc.org/fau/fd/FA00004415.

Council of Science Editors:

Totten K. Determination of the tensile strength of the fiber/matrix interface for glass/epoxy & carbon/vinylester. [Masters Thesis]. Florida Atlantic University; 2015. Available from: http://purl.flvc.org/fau/fd/FA00004415 ; (URL) http://purl.flvc.org/fau/fd/FA00004415

Michigan State University

20. Cueva, Mario Calderon. Flexural properties of hybridized unidirectional composites reinforced with bamboo and basalt fibers.

Degree: 2018, Michigan State University

URL: http://etd.lib.msu.edu/islandora/object/etd:19233

►

Thesis M.S. Michigan State University. Materials Science and Engineering 2018

"In the present work, the flexural properties of hybridized composites with bamboo and basalt as… (more)

Subjects/Keywords: Fibrous composites – Mechanical properties; Composite materials – Mechanical properties; Bamboo; Basalt; Engineering; Materials Science; Mechanics

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APA (6^th Edition):

Cueva, M. C. (2018). Flexural properties of hybridized unidirectional composites reinforced with bamboo and basalt fibers. (Thesis). Michigan State University. Retrieved from http://etd.lib.msu.edu/islandora/object/etd:19233

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):

Cueva, Mario Calderon. “Flexural properties of hybridized unidirectional composites reinforced with bamboo and basalt fibers.” 2018. Thesis, Michigan State University. Accessed March 07, 2021. http://etd.lib.msu.edu/islandora/object/etd:19233.

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

MLA Handbook (7^th Edition):

Cueva, Mario Calderon. “Flexural properties of hybridized unidirectional composites reinforced with bamboo and basalt fibers.” 2018. Web. 07 Mar 2021.

Vancouver:

Cueva MC. Flexural properties of hybridized unidirectional composites reinforced with bamboo and basalt fibers. [Internet] [Thesis]. Michigan State University; 2018. [cited 2021 Mar 07]. Available from: http://etd.lib.msu.edu/islandora/object/etd:19233.

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

Council of Science Editors:

Cueva MC. Flexural properties of hybridized unidirectional composites reinforced with bamboo and basalt fibers. [Thesis]. Michigan State University; 2018. Available from: http://etd.lib.msu.edu/islandora/object/etd:19233

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

University of Wisconsin – Milwaukee

21. Tabandeh Khorshid, Meysam. Nano-Crystalline Metal Matrix Nano-Composites Reinforced By Graphene and Alumina: Effect of Reinforcement Properties and Concentration on Mechanical Behavior.

Degree: PhD, Engineering, 2016, University of Wisconsin – Milwaukee

URL: https://dc.uwm.edu/etd/1314

► Metal matrix composites (MMCs) and Metal Matrix Nano-composites (MMNCs) are promising materials for a number of aerospace, defense, and automobile applications. Among all MMCs… (more)

▼ Metal matrix composites (MMCs) and Metal Matrix Nano-composites (MMNCs) are promising materials for a number of aerospace, defense, and automobile applications. Among all MMCs and MMNCs, aluminum is the most widely used matrix due to its low density coupled with high stiffness, high specific strength, high specific modulus and low thermal expansion coefficient. While high strengths have been shown in MMCs, they are known to have very limited ductility. However, there are indications that reducing reinforcement size to the nanoscale may improve strain to failure in addition to increase strength. Reducing grain size to the nanoscale has been found to improve material properties specially strength until grain size of around 10 nm. From this preliminary evidence, it would appear that nanocrystalline (NC) metallic materials and NC MMNCs may result in the best properties. Yet, in these materials, the effect of processing conditions and reinforcement type, size, and concentration on material performance is not well understood. Currently, mainly Powder Metallurgy (PM) techniques appear to be capable of generating NC metallic materials. Milling is used to mix matrix and reinforcement particles as well as reduce the size of particles. The majority of work in synthesizing NC metallic materials has employed cryomilling, which is milling of the metallic powders in a medium of liquid nitrogen (LN2) using stearic acid as a process control agent (PCA). After cryomilling, the milled powder is nanosize, but requires a high temperature/high vacuum degassing step to remove the PCA. However, there are several medium/PCA combinations that could be used that may produce the same results as the relatively complex and expensive LN2/Stearic acid combination. To date, these alternatives remain unexplored. To consolidate the milled powders techniques such as HIP, CIP, single action compaction, extrusion, and forging can be used. However, to achieve close to theoretical densities it is necessary to perform the consolidation at high temperature. The high temperature causes coarsening of the powder grains and results in a larger grain size. Since it appears that the grain size is one of the main factors in determining the strength and ductility of the material, it is important to understand how reinforcement additions affect grain growth. Furthermore, plastic deformation seems to be required to achieve maximum density. Plastic deformation results in work hardening, which strengthens the material at the expense of ductility. The effect of reinforcement additions on work hardening has also received limited attention. In order to better understand the effect of reinforcement type, size, and concentration on the processing and mechanical behavior of NC metals and MMNCs, pure Al was mixed with varying concentrations of graphene nanoplatelets (GNPs) and 47 nm alumina nanoparticles (Al2O3np). Instead of cryomilling, milling was conducted at room temperature in ethanol, where ethanol acted as both the medium and PCA. Degassing was… Advisors/Committee Members: Pradeep K. Rohatgi.

Subjects/Keywords: Graphene; Mechanical Properties of Materials; Metal Matrix Composites; Nanocrystalline Materials; Powder Metallurgy; Strengthening Mechanisms; Engineering; Materials Science and Engineering

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APA (6^th Edition):

Tabandeh Khorshid, M. (2016). Nano-Crystalline Metal Matrix Nano-Composites Reinforced By Graphene and Alumina: Effect of Reinforcement Properties and Concentration on Mechanical Behavior. (Doctoral Dissertation). University of Wisconsin – Milwaukee. Retrieved from https://dc.uwm.edu/etd/1314

Chicago Manual of Style (16^th Edition):

Tabandeh Khorshid, Meysam. “Nano-Crystalline Metal Matrix Nano-Composites Reinforced By Graphene and Alumina: Effect of Reinforcement Properties and Concentration on Mechanical Behavior.” 2016. Doctoral Dissertation, University of Wisconsin – Milwaukee. Accessed March 07, 2021. https://dc.uwm.edu/etd/1314.

MLA Handbook (7^th Edition):

Tabandeh Khorshid, Meysam. “Nano-Crystalline Metal Matrix Nano-Composites Reinforced By Graphene and Alumina: Effect of Reinforcement Properties and Concentration on Mechanical Behavior.” 2016. Web. 07 Mar 2021.

Vancouver:

Tabandeh Khorshid M. Nano-Crystalline Metal Matrix Nano-Composites Reinforced By Graphene and Alumina: Effect of Reinforcement Properties and Concentration on Mechanical Behavior. [Internet] [Doctoral dissertation]. University of Wisconsin – Milwaukee; 2016. [cited 2021 Mar 07]. Available from: https://dc.uwm.edu/etd/1314.

Council of Science Editors:

Tabandeh Khorshid M. Nano-Crystalline Metal Matrix Nano-Composites Reinforced By Graphene and Alumina: Effect of Reinforcement Properties and Concentration on Mechanical Behavior. [Doctoral Dissertation]. University of Wisconsin – Milwaukee; 2016. Available from: https://dc.uwm.edu/etd/1314

Michigan State University

22. Chakravarty, Harish Narasimhan. Effect of alloying additions of aluminium and iron on the creep resistance of Ti-12Cr (wt.%).

Degree: 2019, Michigan State University

URL: http://etd.lib.msu.edu/islandora/object/etd:48145

►

Thesis M.S. Michigan State University. Materials Science and Engineering 2019.

ABSTRACTEFFECT OF ALLOYING ADDITIONS OF ALUMINIUM AND IRON ON THE CREEPRESISTANCE OF TI-12CR (WT.%)ByHarish Narasimhan… (more)

Subjects/Keywords: Titanium alloys – Creep; Titanium alloys – Mechanical properties; Titanium alloys – Compression testing; Materials Science

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APA (6^th Edition):

Chakravarty, H. N. (2019). Effect of alloying additions of aluminium and iron on the creep resistance of Ti-12Cr (wt.%). (Thesis). Michigan State University. Retrieved from http://etd.lib.msu.edu/islandora/object/etd:48145

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):

Chakravarty, Harish Narasimhan. “Effect of alloying additions of aluminium and iron on the creep resistance of Ti-12Cr (wt.%).” 2019. Thesis, Michigan State University. Accessed March 07, 2021. http://etd.lib.msu.edu/islandora/object/etd:48145.

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

MLA Handbook (7^th Edition):

Chakravarty, Harish Narasimhan. “Effect of alloying additions of aluminium and iron on the creep resistance of Ti-12Cr (wt.%).” 2019. Web. 07 Mar 2021.

Vancouver:

Chakravarty HN. Effect of alloying additions of aluminium and iron on the creep resistance of Ti-12Cr (wt.%). [Internet] [Thesis]. Michigan State University; 2019. [cited 2021 Mar 07]. Available from: http://etd.lib.msu.edu/islandora/object/etd:48145.

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

Council of Science Editors:

Chakravarty HN. Effect of alloying additions of aluminium and iron on the creep resistance of Ti-12Cr (wt.%). [Thesis]. Michigan State University; 2019. Available from: http://etd.lib.msu.edu/islandora/object/etd:48145

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

University of Western Ontario

23. Fu, Bolin. Characterization Of The Mechanical Performance Of The AE44-2 And AE44-4 High Pressure Die Cast Mg-Rare Earth Alloys.

Degree: 2020, University of Western Ontario

URL: https://ir.lib.uwo.ca/etd/7535

► This thesis aims to study the local mechanical properties of high pressure die cast (HPDC) AE44-2 and AE44-4 alloys at 25˚C and 200˚C and their… (more)

Subjects/Keywords: Mg-Al-RE alloys; Spherical indentation testing; Elevated temperature mechanical properties; Materials Science and Engineering

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APA (6^th Edition):

Fu, B. (2020). Characterization Of The Mechanical Performance Of The AE44-2 And AE44-4 High Pressure Die Cast Mg-Rare Earth Alloys. (Thesis). University of Western Ontario. Retrieved from https://ir.lib.uwo.ca/etd/7535

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):

Fu, Bolin. “Characterization Of The Mechanical Performance Of The AE44-2 And AE44-4 High Pressure Die Cast Mg-Rare Earth Alloys.” 2020. Thesis, University of Western Ontario. Accessed March 07, 2021. https://ir.lib.uwo.ca/etd/7535.

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

MLA Handbook (7^th Edition):

Fu, Bolin. “Characterization Of The Mechanical Performance Of The AE44-2 And AE44-4 High Pressure Die Cast Mg-Rare Earth Alloys.” 2020. Web. 07 Mar 2021.

Vancouver:

Fu B. Characterization Of The Mechanical Performance Of The AE44-2 And AE44-4 High Pressure Die Cast Mg-Rare Earth Alloys. [Internet] [Thesis]. University of Western Ontario; 2020. [cited 2021 Mar 07]. Available from: https://ir.lib.uwo.ca/etd/7535.

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

Council of Science Editors:

Fu B. Characterization Of The Mechanical Performance Of The AE44-2 And AE44-4 High Pressure Die Cast Mg-Rare Earth Alloys. [Thesis]. University of Western Ontario; 2020. Available from: https://ir.lib.uwo.ca/etd/7535

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

Cape Peninsula University of Technology

24. Moleejane, Cullen Mayuni. An experimental investigation of the effect of microstructural features on mechanical properties of EN8 steel .

Degree: 2009, Cape Peninsula University of Technology

URL: http://etd.cput.ac.za/handle/20.500.11838/1254

► Materials in almost all components are subjected to some kind of loading that must be correctly predicted to produce reliable designs. The understanding of a… (more)

▼ Materials in almost all components are subjected to some kind of loading that must be correctly predicted to produce reliable designs. The understanding of a material's properties significantly impacts appropriate selection for a structure. This kind of material characterization is also important in the development of improved or new materials for high strength and novel applications. There are numerous metallurgical variables (composition and process parameters) that influence the physical and mechanical properties of materials. The aim of this work has been to study the influence of microstructure on mechanical properties of steel, specifically the effect of grain sizes within solid phase mixtures. Parameters for simple models of the variation of material properties with grain size can be determined. These models can then be incorporated in the material data sets of Finite Element Analysis programs which will then allow for structural analysis with zones in a material having different grain sizes. The deformation and damage behaviour of EN 8 steel have been stUdied with emphasis on the effects of grain size on the elastic-plastic response of the material. For that purpose, EN 8 specimens with a range of microstructures (grain size and phase) were prepared by heat treatment The microstructural features were carefully characterized using two different experimental surface microscopy techniques; Light Optical Microscope and Scanning Electron Microscope. The deformation and hardness characteristics have been studied with the help of tensile and hardness tests. The mechanical properties were determined as a function of microstructure (grain size and phase). The yield stress followed the classical Hall-Petch relation. The results indicated that tensile strength and hardness increases with decrease in grain size while elongation decreases. The main philosophy behind this research has been the study of the microstructure and information from the iron-carbon phase diagram together with numerical analysis of stress-strain data, in order, to understand the influence of grain size on mechanical behaviour of EN8 steel. This combination was then used to make general conclusions on mechanical behaviour of EN 8 based on heat treatment history.

Subjects/Keywords: Microstructure; Materials – Mechanical properties; Steel

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APA (6^th Edition):

Moleejane, C. M. (2009). An experimental investigation of the effect of microstructural features on mechanical properties of EN8 steel . (Thesis). Cape Peninsula University of Technology. Retrieved from http://etd.cput.ac.za/handle/20.500.11838/1254

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):

Moleejane, Cullen Mayuni. “An experimental investigation of the effect of microstructural features on mechanical properties of EN8 steel .” 2009. Thesis, Cape Peninsula University of Technology. Accessed March 07, 2021. http://etd.cput.ac.za/handle/20.500.11838/1254.

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

MLA Handbook (7^th Edition):

Moleejane, Cullen Mayuni. “An experimental investigation of the effect of microstructural features on mechanical properties of EN8 steel .” 2009. Web. 07 Mar 2021.

Vancouver:

Moleejane CM. An experimental investigation of the effect of microstructural features on mechanical properties of EN8 steel . [Internet] [Thesis]. Cape Peninsula University of Technology; 2009. [cited 2021 Mar 07]. Available from: http://etd.cput.ac.za/handle/20.500.11838/1254.

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

Council of Science Editors:

Moleejane CM. An experimental investigation of the effect of microstructural features on mechanical properties of EN8 steel . [Thesis]. Cape Peninsula University of Technology; 2009. Available from: http://etd.cput.ac.za/handle/20.500.11838/1254

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

University of Missouri – Columbia

25. Aldoshan, Abdelhakim Ahmed. Investigation of mechanical behavior of closed-cell aluminum foam reinforced with carbon nanotubes under dynamic loadings.

Degree: 2016, University of Missouri – Columbia

URL: http://hdl.handle.net/10355/62535

► [ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] Aluminum foams represent a unique class of solid cellular light metals that can undergo large… (more)

▼ [ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] Aluminum foams represent a unique class of solid cellular light metals that can undergo large deformations at a nearly constant stress known as Plateau Stress. With relatively greater energy absorption and better weight saving as compared to polymeric foams, closed cell Al-foams still suffer from low strength. Thus, it is important to enhance the strength of closed cell aluminum foam by using nanomaterials without compromising the energy absorption capability. Closed cell aluminum foam reinforced with carbon nanotubes (refer to CNT hereinafter) was fabricated using the liquid metallurgy route with different CNT concentrations: 0, 1, 2 and 3 wt percent. Quasistatic and dynamic compression tests have been conducted to study the mechanical properties of Al-foams. Split Hopkinson Pressure Bar (SHPB) apparatus has been used for high strain rate compression with a proper specimen aspect ratio and a perforated pulse shaper to achieve constant strain rate and stress equilibrium in the specimens. It was observed that closed cell aluminum foam composites are strain rate sensitive. The mechanical properties of CNT reinforced Al-foams such as compressive stresses (peak stress and plateau stress) and energy absorption capacity are significantly higher than that of monolithic Al-foam under both low and high strain rates. It was determined that 2 wt percent concentration produces the highest peak stress, plateau stress and energy absorption among 1-3 wt percent CNT reinforced Al-foams. Also, dynamic high temperature compression behavior has been studied over varying strain rates and temperatures (298 K to 623 K). Peak stress and plateau stress of CNT reinforced Alfoam increase as the strain rate increases under increasing temperatures. Compared to unreinforced Al-foam, the CNT reinforced foam shows an increase in peak and plateau stress depending on the CNT concentration and temperature. Among the different CNT concentrations investigated under different strain rates, the 2 wt percent CNT Al-foam shows the highest peak stress, plateau stress and energy absorption over the temperature range studied. Furthermore, the effect of relative density (0.16 to 0.30) of 2 wt percent CNT reinforced Al-foam has been studied under quasi-static and dynamic loading. Compressive stresses and energy absorption increase as the relative density increases. It is noted that relative density 0.30 exhibited the highest peak stress, plateau stress and energy absorption. Additionally, deformation mechanisms and failure modes of cell walls and cell membranes of closed-cell CNT reinforced Al-foams have been experimentally studied under quasi-static compression loading. Crush bands were observed and fully developed at less than 10-20 percent strain. Two types of crush band were found: V-shaped and inclined crush bands and the crush band angles varies in the range 14- 31 degrees. Advisors/Committee Members: Khanna, Sanjeev (advisor).

Subjects/Keywords: Aluminum foam; Materials – Mechanical properties

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APA (6^th Edition):

Aldoshan, A. A. (2016). Investigation of mechanical behavior of closed-cell aluminum foam reinforced with carbon nanotubes under dynamic loadings. (Thesis). University of Missouri – Columbia. Retrieved from http://hdl.handle.net/10355/62535

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):

Aldoshan, Abdelhakim Ahmed. “Investigation of mechanical behavior of closed-cell aluminum foam reinforced with carbon nanotubes under dynamic loadings.” 2016. Thesis, University of Missouri – Columbia. Accessed March 07, 2021. http://hdl.handle.net/10355/62535.

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

MLA Handbook (7^th Edition):

Aldoshan, Abdelhakim Ahmed. “Investigation of mechanical behavior of closed-cell aluminum foam reinforced with carbon nanotubes under dynamic loadings.” 2016. Web. 07 Mar 2021.

Vancouver:

Aldoshan AA. Investigation of mechanical behavior of closed-cell aluminum foam reinforced with carbon nanotubes under dynamic loadings. [Internet] [Thesis]. University of Missouri – Columbia; 2016. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/10355/62535.

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

Council of Science Editors:

Aldoshan AA. Investigation of mechanical behavior of closed-cell aluminum foam reinforced with carbon nanotubes under dynamic loadings. [Thesis]. University of Missouri – Columbia; 2016. Available from: http://hdl.handle.net/10355/62535

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

Ryerson University

26. Mikhailenko, Peter. Durability of Cement Paste with Metakaolin.

Degree: 2012, Ryerson University

URL: https://digital.library.ryerson.ca/islandora/object/RULA%3A1064

► Durability characteristics of cement paste with two types of metakaolin (MK1 and MK2) replacement were examined. "Fluidized bed" calcination produced MK1 which was relatively pure,… (more)

Subjects/Keywords: Cement – Testing; Cement – Additives; Composite materials – Testing; Cement composites – Mechanical properties

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APA (6^th Edition):

Mikhailenko, P. (2012). Durability of Cement Paste with Metakaolin. (Thesis). Ryerson University. Retrieved from https://digital.library.ryerson.ca/islandora/object/RULA%3A1064

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):

Mikhailenko, Peter. “Durability of Cement Paste with Metakaolin.” 2012. Thesis, Ryerson University. Accessed March 07, 2021. https://digital.library.ryerson.ca/islandora/object/RULA%3A1064.

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

MLA Handbook (7^th Edition):

Mikhailenko, Peter. “Durability of Cement Paste with Metakaolin.” 2012. Web. 07 Mar 2021.

Vancouver:

Mikhailenko P. Durability of Cement Paste with Metakaolin. [Internet] [Thesis]. Ryerson University; 2012. [cited 2021 Mar 07]. Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A1064.

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

Council of Science Editors:

Mikhailenko P. Durability of Cement Paste with Metakaolin. [Thesis]. Ryerson University; 2012. Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A1064

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

Ryerson University

27. Saha, Subrata K. A study of grain refinement of AZ91E and Mg-9 wt.% AI alloys using zinc oxide.

Degree: 2014, Ryerson University

URL: https://digital.library.ryerson.ca/islandora/object/RULA%3A3479

► Grain refinement is a proven method to improve mechanical properties of Mg alloys. In this research, the influence of ZnO on the microstructure of selected… (more)

Subjects/Keywords: Alloys – Mechanical properties; Magnesium alloys – Testing; Magnesium alloys – Fatigue; Magnesium alloys – Mechanical properties; Strength of materials

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APA (6^th Edition):

Saha, S. K. (2014). A study of grain refinement of AZ91E and Mg-9 wt.% AI alloys using zinc oxide. (Thesis). Ryerson University. Retrieved from https://digital.library.ryerson.ca/islandora/object/RULA%3A3479

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):

Saha, Subrata K. “A study of grain refinement of AZ91E and Mg-9 wt.% AI alloys using zinc oxide.” 2014. Thesis, Ryerson University. Accessed March 07, 2021. https://digital.library.ryerson.ca/islandora/object/RULA%3A3479.

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

MLA Handbook (7^th Edition):

Saha, Subrata K. “A study of grain refinement of AZ91E and Mg-9 wt.% AI alloys using zinc oxide.” 2014. Web. 07 Mar 2021.

Vancouver:

Saha SK. A study of grain refinement of AZ91E and Mg-9 wt.% AI alloys using zinc oxide. [Internet] [Thesis]. Ryerson University; 2014. [cited 2021 Mar 07]. Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A3479.

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

Council of Science Editors:

Saha SK. A study of grain refinement of AZ91E and Mg-9 wt.% AI alloys using zinc oxide. [Thesis]. Ryerson University; 2014. Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A3479

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

Ryerson University

28. Naik, Bhukya Srinivasa. Friction Stir Welding of AZ31B-H24 Magnesium Alloy in Lap Configuration.

Degree: 2015, Ryerson University

URL: https://digital.library.ryerson.ca/islandora/object/RULA%3A4268

► Friction stir welding (FSW) being an enabling solid-state joining technology can be suitably applied for the assembly of lightweight magnesium alloys. In this study, AZ31B-H24… (more)

▼ Friction stir welding (FSW) being an enabling solid-state joining technology can be suitably applied for the assembly of lightweight magnesium alloys. In this study, AZ31B-H24 Mg alloy sheets with a thickness of 2 mm were friction stir welded in lap configuration using two tool rotational rates of 1000 and 1500 rpm and two welding speeds of 10 and 20 mm/s. The joint quality was characterized in terms of the residual stresses, welding defects, microstructure, and texture. The mechanical properties including hardness, room and elevated temperature tensile and fatigue properties were also evaluated and correlated to the structure and defects. It was observed that the hardness decreased from the base metal (BM) to the stir zone (SZ) across the heat-affected zone (HAZ) and thermomechanically-affected zone (TMAZ). The lowest value of hardness appeared in the SZ. With increasing tool rotational rate or decreasing welding speed, the average hardness in the SZ decreased owing to increasing grain sizes, and a Hall-Petch-type relationship was established. The shear tensile behavior of the lap joints was evaluated at low (-40°C), room (25°C), and elevated (180°C) temperatures. The failure load was highest in the lower heat input condition that was obtained at a tool rotational rate of 1000 rpm and a welding speed of 20 mm/s at all the test temperatures, due to a smaller hooking height, larger effective sheet thickness, and lower tensile residual stress, as compared with other two welding conditions that were obtained at a higher tool rotational rate or lower welding speed. The lap joints usually fractured on the advancing side of the top sheet near the interface between the TMAZ and the SZ. Elevated temperature testing of the weld assembled at a tool rotational rate of 1000 rpm and a welding speed of 20 mm/s led to the failure along the sheet interface in a shear fracture mode due to the high integrity of the joint that exhibited large plastic deformation and increased total energy absorption. Fatigue fracture of the lap welds always occurred at the interface between the SZ and TMAZ on the advancing side where a larger hooking defect was present (in comparison with the retreating side). The welding parameters had a significant influence on the hook height and the subsequent fatigue life. A relatively “cold” weld, conducted at a rotational rate of 1000 rpm and welding speed of 20 mm/s, gave rise to almost complete elimination of the hooking defect, thus considerably (over two orders of magnitude) improving the fatigue life. Fatigue crack propagation was basically characterized by the formation of fatigue striations concomitantly with secondary cracks.

Subjects/Keywords: Strength of materials – Mathematical models; Friction stir welding; Magnesium alloys – Testing; Magnesium alloys – Mechanical properties

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APA (6^th Edition):

Naik, B. S. (2015). Friction Stir Welding of AZ31B-H24 Magnesium Alloy in Lap Configuration. (Thesis). Ryerson University. Retrieved from https://digital.library.ryerson.ca/islandora/object/RULA%3A4268

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):

Naik, Bhukya Srinivasa. “Friction Stir Welding of AZ31B-H24 Magnesium Alloy in Lap Configuration.” 2015. Thesis, Ryerson University. Accessed March 07, 2021. https://digital.library.ryerson.ca/islandora/object/RULA%3A4268.

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

MLA Handbook (7^th Edition):

Naik, Bhukya Srinivasa. “Friction Stir Welding of AZ31B-H24 Magnesium Alloy in Lap Configuration.” 2015. Web. 07 Mar 2021.

Vancouver:

Naik BS. Friction Stir Welding of AZ31B-H24 Magnesium Alloy in Lap Configuration. [Internet] [Thesis]. Ryerson University; 2015. [cited 2021 Mar 07]. Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A4268.

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

Council of Science Editors:

Naik BS. Friction Stir Welding of AZ31B-H24 Magnesium Alloy in Lap Configuration. [Thesis]. Ryerson University; 2015. Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A4268

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

Michigan State University

29. Liu, Jialin (Graduate of Michigan State University). Atomic simulation on chemical-mechanical coupled deformations in complex nano structures.

Degree: 2019, Michigan State University

URL: http://etd.lib.msu.edu/islandora/object/etd:47707

►

Thesis Ph. D. Michigan State University. Materials Science and Engineering 2019

"Nano-structured materials often exhibit very different mechanical properties comparing with their bulk counterpart and… (more)

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Thesis Ph. D. Michigan State University. Materials Science and Engineering 2019

"Nano-structured materials often exhibit very different mechanical properties comparing with their bulk counterpart and are more sensitive and active to chemical interactions with the environments due to the large surface-to-volume ratio. In this thesis, predictive modeling techniques including density functional theory (DFT) and reactive molecular dynamics method (MD) are designed and applied to understand the deformation mechanisms of complex nano-structured material and describe chemical-mechanical coupled interactions. Three technologically important materials are investigated, to understanding the high strain rate toughening mechanism in nacre, predicting the formation and fracture of aluminum oxide bifilms in aluminum castings, and revealing the lithium growth morphology as a function of oxygen partial pressure. For nacre, its hierarchical structure and toughening mechanisms have inspired many materials developments. Recently, a new toughening mechanism, deformation twins was observed in nacre after dynamic loading (103 s – 1). The deformation twinning tendency and the competition between fracture and deformation twinning were revealed by DFT calculations. We discovered that the ratio of the unstable and the stable stacking fault energy in aragonite is hitherto the highest in a broad range of metallic and oxide materials and the bonding nature for this high ratio is explained. Both aluminum and lithium have high oxygen affinity. Their interaction with the oxygen environment affects the mechanical properties and vice versa. During casting of aluminum, it has long been proposed that the entrapped alumina "bifilms" are detrimental to the fatigue properties of the cast product. However, its properties have never been measured due to experimental limitations. Therefore, a ReaxFF based MD protocol was designed to simulate aging, folding, and fracture of oxide bifilms. The predicted fracture energy, fracture location, and differences between old and young oxides are explained a series of experimental observations. To illustrate the Li-growth mechanism in a solid-state-battery testing platform, we modeled the morphology of Li nano-structure growth in oxygen environment via ReaxFF-based MD. The simulation revealed that the competition of the Li growth rate and oxidation rate leads to the sphere-nanowire-sphere morphology transition with increasing oxygen partial pressure. Understanding the impact of chemical reaction on Li dendrite growth mechanisms and morphology evolution provided insights on the formation of the solid electrolyte interface (SEI) layer in a Li-ion battery. Finally, a shortcoming of the current charge transfer scheme (qEq) used in the ReaxFF MD simulation is discussed. It is demonstrated that qEq method will lead to overductile ionic materials in the MD simulation. A new Force field method and new parameters are proposed to mitigate this problem." – Pages ii-iii.

Description based on online resource;

Advisors/Committee Members: Qi, Yue, Bieler, Thomas, Lee, Andre, Dong, Lixin.

Subjects/Keywords: Nanostructured materials – Mechanical properties; Nanostructured materials – Computer simulation; Deformations (Mechanics); Materials Science

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APA (6^th Edition):

Liu, J. (. o. M. S. U. (2019). Atomic simulation on chemical-mechanical coupled deformations in complex nano structures. (Thesis). Michigan State University. Retrieved from http://etd.lib.msu.edu/islandora/object/etd:47707

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):

Liu, Jialin (Graduate of Michigan State University). “Atomic simulation on chemical-mechanical coupled deformations in complex nano structures.” 2019. Thesis, Michigan State University. Accessed March 07, 2021. http://etd.lib.msu.edu/islandora/object/etd:47707.

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

MLA Handbook (7^th Edition):

Liu, Jialin (Graduate of Michigan State University). “Atomic simulation on chemical-mechanical coupled deformations in complex nano structures.” 2019. Web. 07 Mar 2021.

Vancouver:

Liu J(oMSU. Atomic simulation on chemical-mechanical coupled deformations in complex nano structures. [Internet] [Thesis]. Michigan State University; 2019. [cited 2021 Mar 07]. Available from: http://etd.lib.msu.edu/islandora/object/etd:47707.

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

Council of Science Editors:

Liu J(oMSU. Atomic simulation on chemical-mechanical coupled deformations in complex nano structures. [Thesis]. Michigan State University; 2019. Available from: http://etd.lib.msu.edu/islandora/object/etd:47707

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

Michigan State University

30. Ni, Jennifer Elisabeth. Powder processing and mechanical properties of Silver0.86Lead19Antimony telluride20 (LAST) and Lead0.95Tin0.05Tellurium - Lead sulfide 8% (Lead telluride -Lead sulfide) thermoelectric materials.

Degree: 2012, Michigan State University

URL: http://etd.lib.msu.edu/islandora/object/etd:1435

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Thesis Ph. D. Michigan State University. Materials Science Engineering 2012.

Thermoelectric (TE) materials convert between thermal and electrical energy and when used with existing processes… (more)

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Thesis Ph. D. Michigan State University. Materials Science Engineering 2012.

Thermoelectric (TE) materials convert between thermal and electrical energy and when used with existing processes will increase the efficiency via waste heat recovery. Ag_0.86Pb₁₉SbTe₂₀ (LAST) and Pb_0.95Sn_0.05Te - PbS 8% (PbTe-PbS) materials exhibit good thermoelectric (TE) properties and have potential applications as thermoelectric generators in waste heat recovery. However, to fully characterize the thermo-mechanical behavior of LAST and PbTe-PbS materials under in-service conditions, knowledge is needed of the mechanical and thermal properties at room and high temperature. As fracture strength is inversely proportional to the square root of grain size, cast ingots were powder processed to reduce powder particle size. Three different powder processing methods were used (1) dry milling only, (2) wet milling only, or (3) dry milling and wet milling The specimens were fabricated using hot pressing or pulsed electric current sintering (PECS) from planetary ball milled powders. In this study, elastic moduli, including Young's modulus, shear modulus, and Poisson's ratio, were measured dynamically using resonant ultrasound spectroscopy (RUS) at room temperature and as a function of temperature up to 663 K. The room temperature porosity dependence for Young's modulus followed the empirical exponential relationships common for brittle materials, with a material dependent constant bPE of 3.5 and 1.3 for LAST and PbTe-PbS, respectively. The room temperature Young's modulus for a theoretically dense specimen was 58.4 ± 0.6 GPa and 56.2 ± 0.4 GPa for for LAST and PbTe-PbS, respectively. For hot pressed PbTe-PbS specimens, the Vickers indentations mean hardness and fracture toughness was 1.18 + 0.09 GPa and 0.35 ± 0.04 MPa*m1/2. The coefficient of thermal expansion is important for understanding the mechanical response of a material to a thermal gradient or a thermal transient. For PbTe-PbS the coefficient of thermal expansion measured using dilatometry and high temperature x-ray diffraction was 21.5 x 10^-6 K^-1. Bloating during post-densification annealing was measured indirectly using resonant ultrasound spectroscopy and dilatometry and directly using scanning electron microscopy. Dry milled only PECS-processed PbTe-PbS specimens did not bloat during post-densification anneals up to 936 K. Hot pressed and PECS-processed specimens processed from wet milled and dry and wet milled powder bloated during densification anneals at temperatures over 603 K.

Description based on online resource; title from PDF t.p. (ProQuest, viewed Feb. 19, 2013)

Advisors/Committee Members: Case, Eldon D, Morelli, Donald, Hogan, Timothy, Subramanian, K.

Subjects/Keywords: Thermoelectric materials; Thermoelectric materials – Mechanical properties; Heat recovery – Research; Lead sulfide; Materials Science

Record Details Similar Records Cite « Share

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

APA (6^th Edition):

Ni, J. E. (2012). Powder processing and mechanical properties of Silver0.86Lead19Antimony telluride20 (LAST) and Lead0.95Tin0.05Tellurium - Lead sulfide 8% (Lead telluride -Lead sulfide) thermoelectric materials. (Thesis). Michigan State University. Retrieved from http://etd.lib.msu.edu/islandora/object/etd:1435

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):

Ni, Jennifer Elisabeth. “Powder processing and mechanical properties of Silver0.86Lead19Antimony telluride20 (LAST) and Lead0.95Tin0.05Tellurium - Lead sulfide 8% (Lead telluride -Lead sulfide) thermoelectric materials.” 2012. Thesis, Michigan State University. Accessed March 07, 2021. http://etd.lib.msu.edu/islandora/object/etd:1435.

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

MLA Handbook (7^th Edition):

Ni, Jennifer Elisabeth. “Powder processing and mechanical properties of Silver0.86Lead19Antimony telluride20 (LAST) and Lead0.95Tin0.05Tellurium - Lead sulfide 8% (Lead telluride -Lead sulfide) thermoelectric materials.” 2012. Web. 07 Mar 2021.

Vancouver:

Ni JE. Powder processing and mechanical properties of Silver0.86Lead19Antimony telluride20 (LAST) and Lead0.95Tin0.05Tellurium - Lead sulfide 8% (Lead telluride -Lead sulfide) thermoelectric materials. [Internet] [Thesis]. Michigan State University; 2012. [cited 2021 Mar 07]. Available from: http://etd.lib.msu.edu/islandora/object/etd:1435.

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

Council of Science Editors:

Ni JE. Powder processing and mechanical properties of Silver0.86Lead19Antimony telluride20 (LAST) and Lead0.95Tin0.05Tellurium - Lead sulfide 8% (Lead telluride -Lead sulfide) thermoelectric materials. [Thesis]. Michigan State University; 2012. Available from: http://etd.lib.msu.edu/islandora/object/etd:1435

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

Open Access Theses and Dissertations