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University of Alberta
1.
Leveille, Paul.
Rockbursting Properties of Kimberlite - Diavik Diamond Mine
Case Study.
Degree: MS, Department of Civil and Environmental
Engineering, 2016, University of Alberta
URL: https://era.library.ualberta.ca/files/cvt150j247
► Rockbursts have been a hazard for mining operations since underground mining first came into practice; the consequences they present to mining personnel and machinery can…
(more)
▼ Rockbursts have been a hazard for mining operations
since underground mining first came into practice; the consequences
they present to mining personnel and machinery can be fatal and
costly. Underground mining in Northern Canada has presented the
opportunity to study the bursting properties of kimberlite. Very
little research has been done to determine the likelihood of
kimberlite bursting, mostly because the diamond mines in Canada
have been primarily surface operations. However, as the mining of
diamonds in Canada has moved underground and continues to delve
deeper, bursting has become a suspect for the cause of recent
failures. Six different types of kimberlite from Diavik Diamond
Mine were collected and the physical properties determined by
uniaxial compressive strength tests, Brazilian tensile strength
tests, and cyclic loading tests. The rockburst profile for each
rock type was determined based on three qualitative bursting
indices developed from studies done on granite and coal. The
bursting indices utilized in this study were the strain energy
index, strain energy density index, and rock brittleness index. A
combined rating system was created to quantify the indices, in
order to compare and map the relative bursting potential of each
rock type. From the combined rating system it was found that the
rockbursting nature of kimberlite is not uniform, and is highly
dependent on the composition and characteristics of the kimberlite
present. This research presents an initial investigation into the
rockbursting potential of kimberlite. While, the applicability of
the findings is limited due to the relatively small sample size, it
does confirm the suspicion of the rockbursting potential in
kimberlite.
Subjects/Keywords: Diavik; kimberlite; diamond; energy; strain; rockburst
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APA (6th Edition):
Leveille, P. (2016). Rockbursting Properties of Kimberlite - Diavik Diamond Mine
Case Study. (Masters Thesis). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/cvt150j247
Chicago Manual of Style (16th Edition):
Leveille, Paul. “Rockbursting Properties of Kimberlite - Diavik Diamond Mine
Case Study.” 2016. Masters Thesis, University of Alberta. Accessed March 02, 2021.
https://era.library.ualberta.ca/files/cvt150j247.
MLA Handbook (7th Edition):
Leveille, Paul. “Rockbursting Properties of Kimberlite - Diavik Diamond Mine
Case Study.” 2016. Web. 02 Mar 2021.
Vancouver:
Leveille P. Rockbursting Properties of Kimberlite - Diavik Diamond Mine
Case Study. [Internet] [Masters thesis]. University of Alberta; 2016. [cited 2021 Mar 02].
Available from: https://era.library.ualberta.ca/files/cvt150j247.
Council of Science Editors:
Leveille P. Rockbursting Properties of Kimberlite - Diavik Diamond Mine
Case Study. [Masters Thesis]. University of Alberta; 2016. Available from: https://era.library.ualberta.ca/files/cvt150j247

Delft University of Technology
2.
Breure, Wik (author).
Towards Improved Design of Rock Reinforcement Systems for Underground Excavations Subjected to Strain Bursting.
Degree: 2017, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:efdd23ee-3bd7-4838-a789-f02f9349320b
► This thesis report presents a concept methodology to quantify the energy release associated with strain bursting in underground excavations based on the size of the…
(more)
▼ This thesis report presents a concept methodology to quantify the
energy release associated with
strain bursting in underground excavations based on the size of the failed zone and the elastic
strain energy stored in the rock mass prior to failure. A
strain burst implies potential harm to people and machinery and may lead to economic loss. An increased understanding of the amount of released
energy rock support systems are subjected to allows for more convenient excavation design and risk mitigation.
Advisors/Committee Members: Jommi, Cristina (mentor), Ngan-Tillard, Dominique (mentor), Voncken, Jack (mentor), Li, C.C. (mentor), Delft University of Technology (degree granting institution).
Subjects/Keywords: strain burst; rock reinforcement; energy release
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APA (6th Edition):
Breure, W. (. (2017). Towards Improved Design of Rock Reinforcement Systems for Underground Excavations Subjected to Strain Bursting. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:efdd23ee-3bd7-4838-a789-f02f9349320b
Chicago Manual of Style (16th Edition):
Breure, Wik (author). “Towards Improved Design of Rock Reinforcement Systems for Underground Excavations Subjected to Strain Bursting.” 2017. Masters Thesis, Delft University of Technology. Accessed March 02, 2021.
http://resolver.tudelft.nl/uuid:efdd23ee-3bd7-4838-a789-f02f9349320b.
MLA Handbook (7th Edition):
Breure, Wik (author). “Towards Improved Design of Rock Reinforcement Systems for Underground Excavations Subjected to Strain Bursting.” 2017. Web. 02 Mar 2021.
Vancouver:
Breure W(. Towards Improved Design of Rock Reinforcement Systems for Underground Excavations Subjected to Strain Bursting. [Internet] [Masters thesis]. Delft University of Technology; 2017. [cited 2021 Mar 02].
Available from: http://resolver.tudelft.nl/uuid:efdd23ee-3bd7-4838-a789-f02f9349320b.
Council of Science Editors:
Breure W(. Towards Improved Design of Rock Reinforcement Systems for Underground Excavations Subjected to Strain Bursting. [Masters Thesis]. Delft University of Technology; 2017. Available from: http://resolver.tudelft.nl/uuid:efdd23ee-3bd7-4838-a789-f02f9349320b

Southern Illinois University
3.
Schrader, Sawyer David.
MODIFICATION OF A CURRENT COALBED METHANE PERMEABILITY MODEL FOR HORIZONTAL STRAIN ONLY.
Degree: MS, Mining Engineering, 2018, Southern Illinois University
URL: https://opensiuc.lib.siu.edu/theses/2392
► Cleat permeability of coal is the most critical parameter affecting the amount of production from a coalbed methane (CBM) reservoir. As a result, there…
(more)
▼ Cleat permeability of coal is the most critical parameter affecting the amount of production from a coalbed methane (CBM) reservoir. As a result, there have been many studies about how cleat permeability changes over the life of a reservoir, leading to the development over time of several different permeability models. Most permeability models used today consider volumetric
strain as an input parameter; however, permeability is impacted primarily by the increase in cleat aperture, resulting from matrix shrinkage in the horizontal direction. Recent work has shown that coal exhibits transverse isotropy, with total
strain in the vertical direction being significantly higher than either horizontal direction. Hence, the inclusion of vertical
strain through use of the volumetric
strain parameter could be predicting inaccurate permeability variation results. The objective of this study was to determine the difference in permeability modeling with volumetric
strain compared to permeability modeling with only horizontal
strain, and assess the degree to which different parameters affect results from modeling using only horizontal
strain. Experimental results showed that matrix
strain remained consistent with transversely isotropic results of previous works. When included into the Palmer and Mansoori (P&M) permeability model, modeling results showed that permeability with horizontal
strain is significantly lower than that with volumetric
strain. The three unmeasured parameters in the Palmer and Mansoori permeability model have a major effect on the final results and need to be history matched in order to improve the level of accuracy in their estimation.
Advisors/Committee Members: Harpalani, Satya.
Subjects/Keywords: Coalbed methane; modeling; permeability; strain; unconventional energy
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APA (6th Edition):
Schrader, S. D. (2018). MODIFICATION OF A CURRENT COALBED METHANE PERMEABILITY MODEL FOR HORIZONTAL STRAIN ONLY. (Masters Thesis). Southern Illinois University. Retrieved from https://opensiuc.lib.siu.edu/theses/2392
Chicago Manual of Style (16th Edition):
Schrader, Sawyer David. “MODIFICATION OF A CURRENT COALBED METHANE PERMEABILITY MODEL FOR HORIZONTAL STRAIN ONLY.” 2018. Masters Thesis, Southern Illinois University. Accessed March 02, 2021.
https://opensiuc.lib.siu.edu/theses/2392.
MLA Handbook (7th Edition):
Schrader, Sawyer David. “MODIFICATION OF A CURRENT COALBED METHANE PERMEABILITY MODEL FOR HORIZONTAL STRAIN ONLY.” 2018. Web. 02 Mar 2021.
Vancouver:
Schrader SD. MODIFICATION OF A CURRENT COALBED METHANE PERMEABILITY MODEL FOR HORIZONTAL STRAIN ONLY. [Internet] [Masters thesis]. Southern Illinois University; 2018. [cited 2021 Mar 02].
Available from: https://opensiuc.lib.siu.edu/theses/2392.
Council of Science Editors:
Schrader SD. MODIFICATION OF A CURRENT COALBED METHANE PERMEABILITY MODEL FOR HORIZONTAL STRAIN ONLY. [Masters Thesis]. Southern Illinois University; 2018. Available from: https://opensiuc.lib.siu.edu/theses/2392

University of New South Wales
4.
Pramanik, Mridul Ashish.
Life assessment of welded joints operating within creep range.
Degree: Mechanical & Manufacturing Engineering, 2013, University of New South Wales
URL: http://handle.unsw.edu.au/1959.4/52386
;
https://unsworks.unsw.edu.au/fapi/datastream/unsworks:11059/SOURCE1?view=true
► A large portion of the high temperature critical components, used in the power, petroleum, and chemical plants etc. of the world have been in operation…
(more)
▼ A large portion of the high temperature critical components, used in the power, petroleum, and chemical plants etc. of the world have been in operation for long time like 30 to 40 years, are welded. In comparison to the parent metal, the mechanical and structure characteristics and properties of as-welded and weld metal are different, i.e. Hardness values of weld metal are significantly larger. Moreover, the heat affected zone causes structural differences in the comparison to the unaffected parent metal. Therefore, it is very important to determine possible degradation processes occurring in the weld joint inducing the properties changes during long term service and study the behaviour of each zone of the weld joints in the service conditions, as if critical welded components can be replaced before their failure during in the long term operation of those plants.In this thesis, a new model has been introduced and implemented to predict the remaining life of weld joints subjected to creep failure at high temperature and compared with other existing models. This proposed model contains two independent methods, stress analysis approach and
strain analysis approach, to predict the remaining life of welded joints. To calculate the creep life, at first finite element analysis of the experimental cases has been done on the basis of Nortons creep law and then numerical results have been used for further calculation according to the proposed model theory. Finite element analysis showed that
strain energy density has its maximum value in the heat affected zone, so creep failure occurs there, which is similar to the experimental observations. A new creep parameter has been found during the implementation of the proposed model which is the function of temperature and material properties for both the approaches, independently. This parameter plays a significant role to control the margin of error of the proposed model. Furthermore, stress analysis approach of the proposed creep life model has more good accuracy than the
strain analysis approach. The whole study showed that proposed model goes with excellent accuracy with the experimental cases than the other existing creep life prediction models.
Advisors/Committee Members: Kanapathipillai, Sangarapillai, Mechanical & Manufacturing Engineering, Faculty of Engineering, UNSW.
Subjects/Keywords: strain energy density; strain; stress; welded joints; Life prediction; Creep; Welded joints
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
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APA (6th Edition):
Pramanik, M. A. (2013). Life assessment of welded joints operating within creep range. (Masters Thesis). University of New South Wales. Retrieved from http://handle.unsw.edu.au/1959.4/52386 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:11059/SOURCE1?view=true
Chicago Manual of Style (16th Edition):
Pramanik, Mridul Ashish. “Life assessment of welded joints operating within creep range.” 2013. Masters Thesis, University of New South Wales. Accessed March 02, 2021.
http://handle.unsw.edu.au/1959.4/52386 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:11059/SOURCE1?view=true.
MLA Handbook (7th Edition):
Pramanik, Mridul Ashish. “Life assessment of welded joints operating within creep range.” 2013. Web. 02 Mar 2021.
Vancouver:
Pramanik MA. Life assessment of welded joints operating within creep range. [Internet] [Masters thesis]. University of New South Wales; 2013. [cited 2021 Mar 02].
Available from: http://handle.unsw.edu.au/1959.4/52386 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:11059/SOURCE1?view=true.
Council of Science Editors:
Pramanik MA. Life assessment of welded joints operating within creep range. [Masters Thesis]. University of New South Wales; 2013. Available from: http://handle.unsw.edu.au/1959.4/52386 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:11059/SOURCE1?view=true

Texas A&M University
5.
Luo, Xue.
Characterization of Fatigue Cracking and Healing of Asphalt Mixtures.
Degree: PhD, Civil Engineering, 2012, Texas A&M University
URL: http://hdl.handle.net/1969.1/ETD-TAMU-2012-05-10924
► Fatigue cracking is one of the most common distresses of asphalt pavements, whereas healing is a counter process to cracking which alleviates cracking damage and…
(more)
▼ Fatigue cracking is one of the most common distresses of asphalt pavements, whereas healing is a counter process to cracking which alleviates cracking damage and extends fatigue life of asphalt pavements. Most of existing methods to characterize fatigue cracking and healing are generally empirical or phenomenological in nature, which does not satisfy the need to develop mechanistic-based pavement design methods. The objective of this study is to characterize fatigue cracking and healing of asphalt mixtures using an
energy-based mechanistic approach.
A controlled-
strain repeated direct tension (RDT) test is selected to generate both fatigue cracking and permanent deformation in an asphalt mixture specimen. Fatigue cracking is separated from permanent deformation from a mechanical viewpoint. The development of fatigue cracking is described by the evolution of the damage density and the increase of the average crack size with the increase of loading cycles.
A creep and step-loading recovery (CSR) test is designed to measure the internal stress in the recovery phase of an asphalt mixture specimen. The internal stress and the
strain measured in the recovery phase are used to conduct the mechanistic analysis of recovery and healing of the asphalt mixture specimen. Then healing is described using the decrease of the damage density and average crack size with time.
Different types of asphalt mixtures produce distinctly different fatigue cracking and healing characteristics. The effect of mixture composition, temperature, and aging are evaluated using the approach above. The entire series of tests for fatigue, permanent deformation and healing can be completed in one day, with the healing part requiring only a matter of minutes. The methods proposed in this study characterize fatigue cracking and healing of asphalt mixtures using its essential cause and effect relationship.
Advisors/Committee Members: Lytton, Robert L. (advisor), Little, Dallas N. (committee member), Epps Martin, Amy (committee member), Hartwig, Karl T. (committee member), Luo, Rong (committee member).
Subjects/Keywords: asphalt mixtures; fatigue; crack growth; healing; recovery; dissipated pseudo strain energy; recoverable pseudo strain energy; dissipated strain energy; recoverable strain energy; energy-based mechanistic approach; true stress; internal stress; damage density; average crack size; number of cracks
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Luo, X. (2012). Characterization of Fatigue Cracking and Healing of Asphalt Mixtures. (Doctoral Dissertation). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/ETD-TAMU-2012-05-10924
Chicago Manual of Style (16th Edition):
Luo, Xue. “Characterization of Fatigue Cracking and Healing of Asphalt Mixtures.” 2012. Doctoral Dissertation, Texas A&M University. Accessed March 02, 2021.
http://hdl.handle.net/1969.1/ETD-TAMU-2012-05-10924.
MLA Handbook (7th Edition):
Luo, Xue. “Characterization of Fatigue Cracking and Healing of Asphalt Mixtures.” 2012. Web. 02 Mar 2021.
Vancouver:
Luo X. Characterization of Fatigue Cracking and Healing of Asphalt Mixtures. [Internet] [Doctoral dissertation]. Texas A&M University; 2012. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2012-05-10924.
Council of Science Editors:
Luo X. Characterization of Fatigue Cracking and Healing of Asphalt Mixtures. [Doctoral Dissertation]. Texas A&M University; 2012. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2012-05-10924

University of Minnesota
6.
Matus, Daniel Alexander.
Improved seal design based on minimizing strain
energy.
Degree: MS, Mechanical Engineering, 2010, University of Minnesota
URL: http://purl.umn.edu/93255
► University of Minnesota M.S. thesis. June 2010. Major: Mechanical Engineering. Advisor: Barney E. Klamecki, PhD. 1 computer file (PDF); vii, 88 pages, appendices A-D. Ill.…
(more)
▼ University of Minnesota M.S. thesis. June 2010.
Major: Mechanical Engineering. Advisor: Barney E. Klamecki, PhD. 1
computer file (PDF); vii, 88 pages, appendices A-D. Ill. (some
col.)
Minimizing the strain energy in an oring seal has
been identified as a mode of improving its useful lifetime. The
intent of this research was to manipulate the strain energy content
in oring seals by varying material properties and material behavior
over the crosssection of the oring. Oring designs were developed
that contained regions of modified material properties referred to
as insets. These oring designs incorporating insets were evaluated
numerically to determine the effects that the inset’s stiffness,
size, and placement, had on the strain energy content and maximum
sealing pressure of the oring design. Achievements included the
development of oring designs that demonstrated lower strain energy
content than a baseline design made of a single homogeneous
material. Experimental orings were created using commercially
available materials. Compression set and compression stress
relaxation experiments were conducted. Performance of new oring
designs including insets made of a softer material than the main
oring was compared to baseline single material orings. Improved
sealing performance was demonstrated by a decreased rate of sealing
force decay over time, and by decreased compression set, for the
new oring designs proposed.
Advisors/Committee Members: Barney E. Klamecki, PhD.
Subjects/Keywords: Strain energy; O-ring; O-Ring design.; Adaptive-stiffening; Mechanical Engineering.
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
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APA (6th Edition):
Matus, D. A. (2010). Improved seal design based on minimizing strain
energy. (Masters Thesis). University of Minnesota. Retrieved from http://purl.umn.edu/93255
Chicago Manual of Style (16th Edition):
Matus, Daniel Alexander. “Improved seal design based on minimizing strain
energy.” 2010. Masters Thesis, University of Minnesota. Accessed March 02, 2021.
http://purl.umn.edu/93255.
MLA Handbook (7th Edition):
Matus, Daniel Alexander. “Improved seal design based on minimizing strain
energy.” 2010. Web. 02 Mar 2021.
Vancouver:
Matus DA. Improved seal design based on minimizing strain
energy. [Internet] [Masters thesis]. University of Minnesota; 2010. [cited 2021 Mar 02].
Available from: http://purl.umn.edu/93255.
Council of Science Editors:
Matus DA. Improved seal design based on minimizing strain
energy. [Masters Thesis]. University of Minnesota; 2010. Available from: http://purl.umn.edu/93255

Texas A&M University
7.
Li, Ran.
Non-Destructive Damage Evaluation Based on Element Strain Energies.
Degree: MS, Civil Engineering, 2013, Texas A&M University
URL: http://hdl.handle.net/1969.1/149568
► The objective of this thesis is to develop a nondestructive evaluation method that could accurately locate and size damage in structures. The method is to…
(more)
▼ The objective of this thesis is to develop a nondestructive evaluation method that could accurately locate and size damage in structures. The method is to be based on pre-damage and post-damage
strain energies of beam and column elements. The method should apply to 1-D as well as 2-D and 3-D structures with single or multiple damage locations. To achieve the objectives listed above, the following four tasks are addressed: (1) the development of the theoretical foundations of the nondestructive evaluation theory; (2) the validation of the accuracy of the theory using exact structural deformational data generated from the static analysis of F. E. models in SAP2000; (3) the validation of the practical feasibility of the theory using approximated structural deformational data generated from the modal analyses of F.E. models in SAP2000; and (4) the application of the methodology to an existing structure. The numerical simulations of damage indicate that the proposed NDE method can clearly locate damage in the structures and provide an accurate quantitative value of damage severities, even when only a few lower frequencies and mode shapes are known. The field data analysis results indicate that the developed NDE method can locate damage and provide conservative values for damage severity estimations.
Advisors/Committee Members: Stubbs, Norris (advisor), Luciana, Barroso R. (advisor), Hurtado, John E. (committee member).
Subjects/Keywords: Non-Destructive Damage Evaluation; Element Strain Energy Method
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Li, R. (2013). Non-Destructive Damage Evaluation Based on Element Strain Energies. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/149568
Chicago Manual of Style (16th Edition):
Li, Ran. “Non-Destructive Damage Evaluation Based on Element Strain Energies.” 2013. Masters Thesis, Texas A&M University. Accessed March 02, 2021.
http://hdl.handle.net/1969.1/149568.
MLA Handbook (7th Edition):
Li, Ran. “Non-Destructive Damage Evaluation Based on Element Strain Energies.” 2013. Web. 02 Mar 2021.
Vancouver:
Li R. Non-Destructive Damage Evaluation Based on Element Strain Energies. [Internet] [Masters thesis]. Texas A&M University; 2013. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/1969.1/149568.
Council of Science Editors:
Li R. Non-Destructive Damage Evaluation Based on Element Strain Energies. [Masters Thesis]. Texas A&M University; 2013. Available from: http://hdl.handle.net/1969.1/149568

Penn State University
8.
Xing, Wenting.
Phase-field Models of iron phosphate and lithium iron phosphate binary system.
Degree: 2012, Penn State University
URL: https://submit-etda.libraries.psu.edu/catalog/15333
► This thesis describes the phase-field modeling of FePO4-LiFePO4 binary system. Lithium iron phosphate has played an important role as a cathode material in rechargeable lithium-ion…
(more)
▼ This thesis describes the phase-field modeling of FePO4-LiFePO4 binary system. Lithium iron phosphate has played an important role as a cathode material in rechargeable lithium-ion batteries due to its cycle life, safety and stability. The thermodynamics and two-phase morphologies of lithium iron phosphate are studied by combining the phase-field method with microelasticity theory.
The simple regular solution model has been used first to investigate the coherency
strain energy contribution to this binary system. We also developed the fitted expression of the existing experimental data on the phase diagram, as well as the effect of coherency
strain energy on the phase diagram. It was found that coherency
strain energy could significantly suppress the miscibility gap. We predicted the optimum habit planes analytically as well as using three-dimensional phase-field simulations. The results will be compared with experimental observation, which show excellent agreement.
The phase transitions and morphology of microstructure in a nanoparticle in the binary system due to the lithium diffusion process can be observed by combining the smooth boundary method and phase-field model.
Advisors/Committee Members: Long Qing Chen, Thesis Advisor/Co-Advisor.
Subjects/Keywords: Lithium-ion battery; lithium iron phosphate; coherency strain energy
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APA ·
Chicago ·
MLA ·
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CSE |
Export
to Zotero / EndNote / Reference
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APA (6th Edition):
Xing, W. (2012). Phase-field Models of iron phosphate and lithium iron phosphate binary system. (Thesis). Penn State University. Retrieved from https://submit-etda.libraries.psu.edu/catalog/15333
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Xing, Wenting. “Phase-field Models of iron phosphate and lithium iron phosphate binary system.” 2012. Thesis, Penn State University. Accessed March 02, 2021.
https://submit-etda.libraries.psu.edu/catalog/15333.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Xing, Wenting. “Phase-field Models of iron phosphate and lithium iron phosphate binary system.” 2012. Web. 02 Mar 2021.
Vancouver:
Xing W. Phase-field Models of iron phosphate and lithium iron phosphate binary system. [Internet] [Thesis]. Penn State University; 2012. [cited 2021 Mar 02].
Available from: https://submit-etda.libraries.psu.edu/catalog/15333.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Xing W. Phase-field Models of iron phosphate and lithium iron phosphate binary system. [Thesis]. Penn State University; 2012. Available from: https://submit-etda.libraries.psu.edu/catalog/15333
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Delft University of Technology
9.
den Ouden, H.J. (author).
Investigating Planar Delamination Behavior in Carbon Fiber Reinforced Polymer Panels: An evaluation of delamination criteria.
Degree: 2020, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:e47a4a61-c2ff-45bc-994b-ed6bdd2d47ac
► The relation between planar delamination growth, induced by transverse quasi-static load case, and the coupon delamination validation tests was investigated by evaluating the delamination criteria.…
(more)
▼ The relation between planar delamination growth, induced by transverse quasi-static load case, and the coupon delamination validation tests was investigated by evaluating the delamination criteria. The delamination criterion that allowed to describe planar delamination growth was the
strain energy density criterion. An analytical study was performed to relate the elliptical delamination growth in planar delamination growth with the material properties through the
strain energy density criterion. Following to this study, an experimental setup was designed to measure the delamination boundary during the transverse load induction of a planar specimen. With this new experimental setup both quasi-static and fatigue tests were performed with quasi-isotropic planar specimen which have artificial delaminations. For the fatigue tests that were performed on this experimental setup, a methodology was proposed on determining the
strain energy release rate. The outcomes of the quasi static tests were then compared with a numerical model based on mode-partitioning virtual crack closure technique. All the different studies demonstrated that the physical
strain energy release rate was the metric to asses the delamination behavior in a planar fatigue experiment. The delamination criterion that was applicable for planar delamination problems is the
strain energy density criterion which measured and predicted the delamination size.
Advisors/Committee Members: Alderliesten, R.C. (mentor), Delft University of Technology (degree granting institution).
Subjects/Keywords: Planar delamination; Delamination Propagation; Strain Energy Density; Fatigue; Quasi Static
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APA ·
Chicago ·
MLA ·
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to Zotero / EndNote / Reference
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APA (6th Edition):
den Ouden, H. J. (. (2020). Investigating Planar Delamination Behavior in Carbon Fiber Reinforced Polymer Panels: An evaluation of delamination criteria. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:e47a4a61-c2ff-45bc-994b-ed6bdd2d47ac
Chicago Manual of Style (16th Edition):
den Ouden, H J (author). “Investigating Planar Delamination Behavior in Carbon Fiber Reinforced Polymer Panels: An evaluation of delamination criteria.” 2020. Masters Thesis, Delft University of Technology. Accessed March 02, 2021.
http://resolver.tudelft.nl/uuid:e47a4a61-c2ff-45bc-994b-ed6bdd2d47ac.
MLA Handbook (7th Edition):
den Ouden, H J (author). “Investigating Planar Delamination Behavior in Carbon Fiber Reinforced Polymer Panels: An evaluation of delamination criteria.” 2020. Web. 02 Mar 2021.
Vancouver:
den Ouden HJ(. Investigating Planar Delamination Behavior in Carbon Fiber Reinforced Polymer Panels: An evaluation of delamination criteria. [Internet] [Masters thesis]. Delft University of Technology; 2020. [cited 2021 Mar 02].
Available from: http://resolver.tudelft.nl/uuid:e47a4a61-c2ff-45bc-994b-ed6bdd2d47ac.
Council of Science Editors:
den Ouden HJ(. Investigating Planar Delamination Behavior in Carbon Fiber Reinforced Polymer Panels: An evaluation of delamination criteria. [Masters Thesis]. Delft University of Technology; 2020. Available from: http://resolver.tudelft.nl/uuid:e47a4a61-c2ff-45bc-994b-ed6bdd2d47ac

University of Adelaide
10.
Verma, Rupesh Kumar.
A Combined Theoretical-Experimental-Numerical Approach to Characterization and Modelling of Rock Fracture and Rock Burst.
Degree: 2020, University of Adelaide
URL: http://hdl.handle.net/2440/126543
► Rock burst is a violent failure of rock in deep underground conditions, which often has severe consequences. Nevertheless, its underlying mechanism is not well understood,…
(more)
▼ Rock burst is a violent failure of rock in deep underground conditions, which often has severe consequences. Nevertheless, its underlying mechanism is not well understood, let alone being accurately predicted. Existing research studies do indicate the significance of
strain energy storage in rock, but questions like, what material properties control
strain energy characteristics? How to determine and link it with bursting? How to utilize such a framework further to unveil rock-bursting? Have always been at the center and thus formed our motivational base as well. This research presents a systematic approach to combine theoretical, experimental, and numerical developments towards a size-dependent
energy-based rockburst criterion. Along this line, this research develops a new indirect tensile testing methodology named as ‘AUSBIT’ to control the dynamics due to excess
strain energy storage in disc cracking under diametric compression. It allows capturing ‘Snap-Back’ behavior and determining inherent fracture, elastic, strength (tensile), and brittleness properties, all from one simple experiment. The devised methodology is patented in Australia as an Innovation Patent. A theoretical framework delineating the snap-back magnitude, which can be considered as a simple bursting indicator, is also developed. Advanced instrumentations such as Digital Image Correlation (DIC) and Acoustic Emission (AE) techniques are utilized to explore the benefits of controlled diametrical cracking and obtain further details on failure mechanism and its evolutions. This thesis also develops a hybrid numerical modeling approach based on Discrete and Finite Element Methods (3DEC, by Itasca). It incorporates a new cohesive contact model with elastoplastic-damage coupling. Laboratory experiments, including uniaxial compressive strength (UCS) and conventional Brazilian disc (BD) test, are conducted with DIC and AE applications to calibrate, validate and demonstrate the competency of the developed numerical modeling approach. At last, this research develops a size-dependent
energy-based rockburst criterion linking strength, fracture energies, and specimen size effect with stress state due to changes in boundary conditions. It results in the proposal of a bursting index (₽) to quantify the bursting scale. Experimental data of Bluestone rock obtained from AUSBIT and UCS tests are utilized to illustrate the capability of the proposed theoretical framework. Virtual
strain-burst experiments are conducted using the developed numerical modeling approach for verification purposes. This research also provides the links between the conclusions and results from the proposed theoretical framework with the evaluation of in-situ bursting potential in rock masses around underground openings.
Advisors/Committee Members: Nguyen, Giang (advisor), Karakus, Murat (advisor), Taheri, Abbas (advisor), School of Civil, Environmental and Mining Engineering (school).
Subjects/Keywords: Rockburst; AUSBIT; constitutive modeling; DIC; AE; strain energy; burst potential
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Verma, R. K. (2020). A Combined Theoretical-Experimental-Numerical Approach to Characterization and Modelling of Rock Fracture and Rock Burst. (Thesis). University of Adelaide. Retrieved from http://hdl.handle.net/2440/126543
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Verma, Rupesh Kumar. “A Combined Theoretical-Experimental-Numerical Approach to Characterization and Modelling of Rock Fracture and Rock Burst.” 2020. Thesis, University of Adelaide. Accessed March 02, 2021.
http://hdl.handle.net/2440/126543.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Verma, Rupesh Kumar. “A Combined Theoretical-Experimental-Numerical Approach to Characterization and Modelling of Rock Fracture and Rock Burst.” 2020. Web. 02 Mar 2021.
Vancouver:
Verma RK. A Combined Theoretical-Experimental-Numerical Approach to Characterization and Modelling of Rock Fracture and Rock Burst. [Internet] [Thesis]. University of Adelaide; 2020. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/2440/126543.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Verma RK. A Combined Theoretical-Experimental-Numerical Approach to Characterization and Modelling of Rock Fracture and Rock Burst. [Thesis]. University of Adelaide; 2020. Available from: http://hdl.handle.net/2440/126543
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Ottawa
11.
Sayeur, Mathieu.
Mechanical Modeling of Human Platelets Membrane
.
Degree: 2015, University of Ottawa
URL: http://hdl.handle.net/10393/32876
► In an effort to help understand the mechanical properties of human platelets, their deformations were measured using micropipette experiments over an aspiration pressure range of…
(more)
▼ In an effort to help understand the mechanical properties of human platelets, their deformations were measured using micropipette experiments over an aspiration pressure range of 1-5 cmH2O, in steps of 1 cmH2O. The experiments confirmed the previously reported linear relationship between deformation and pressure. The experimental results were used to determine the material constants of a thin-axisymmetric shell model based on a strain-energy constitutive relation to describe the platelet deformations under aspiration. The model was successful in capturing the experimental deformations. It also suggested that the mechanical properties of human platelets are not significantly influenced by their volumes, but do vary depending on the platelets’ undeformed shape ratios. In addition, the model suggested that platelet membrane ruptures due to micropipette aspiration may be strain-related. The limitations of the experimental methods arising from direct contact with reactive cells such as platelets are highlighted, prompting the need for developing new methods which will not require the use of inhibition agents that alter the platelets’ mechanical properties.
Afin d’approfondir les connaissances des propriétés mécaniques des plaquettes humaines, leurs déformations ont été mesurées lors d’expériences avec des micropipettes pour des pressions d’aspiration de 1-5 cmH2O, par intervalles de 1 cmH2O. Les expériences ont confirmé la relation linéaire entre les déformations et la pression d’aspiration telle que précédemment publié. Les données expérimentales ont été utilisées pour déterminer les constantes matérielles d’un modèle de membrane mince axisymétrique basé sur une loi de comportement caractérisant l’énergie de déformation. Le modèle simule bien les déformations des plaquettes sous aspiration; il suggère également que les propriétés mécaniques des plaquettes humaines ne sont pas influencées significativement leur volume, mais varient en fonction de leurs formes avant déformation. De plus, le modèle suggère que les ruptures de la membrane des plaquettes sous aspiration seraient reliées aux déformations. Les limites des méthodes expérimentales utilisées, du fait du contact direct avec des cellules aussi réactives que les plaquettes sont soulignées, et mettent l’emphase sur le besoin de mettre au point de nouvelles méthodes ne requérant pas d’agents d’inhibitions qui altèrent les propriétés mécaniques des plaquettes.
Subjects/Keywords: Platelets;
Mechanics;
Constitutive Model;
Micropipette Aspiration;
Energy Strain Relationship;
Mechanical Properties
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Sayeur, M. (2015). Mechanical Modeling of Human Platelets Membrane
. (Thesis). University of Ottawa. Retrieved from http://hdl.handle.net/10393/32876
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Sayeur, Mathieu. “Mechanical Modeling of Human Platelets Membrane
.” 2015. Thesis, University of Ottawa. Accessed March 02, 2021.
http://hdl.handle.net/10393/32876.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Sayeur, Mathieu. “Mechanical Modeling of Human Platelets Membrane
.” 2015. Web. 02 Mar 2021.
Vancouver:
Sayeur M. Mechanical Modeling of Human Platelets Membrane
. [Internet] [Thesis]. University of Ottawa; 2015. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/10393/32876.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Sayeur M. Mechanical Modeling of Human Platelets Membrane
. [Thesis]. University of Ottawa; 2015. Available from: http://hdl.handle.net/10393/32876
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Deakin University
12.
Jabarulla Khan, Masihullah.
Mechanically strong poly (vinyl alcohol)/epoxy hydrogels.
Degree: 2016, Deakin University
URL: http://hdl.handle.net/10536/DRO/DU:30102709
Study and investigation of a novel class of robust hydrogels for their utilization in load-bearing engineering applications.
Advisors/Committee Members: Guo Qipeng.
Subjects/Keywords: novel hydrogel system; strain rate; fracture energy; tensile strength
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Jabarulla Khan, M. (2016). Mechanically strong poly (vinyl alcohol)/epoxy hydrogels. (Thesis). Deakin University. Retrieved from http://hdl.handle.net/10536/DRO/DU:30102709
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Jabarulla Khan, Masihullah. “Mechanically strong poly (vinyl alcohol)/epoxy hydrogels.” 2016. Thesis, Deakin University. Accessed March 02, 2021.
http://hdl.handle.net/10536/DRO/DU:30102709.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Jabarulla Khan, Masihullah. “Mechanically strong poly (vinyl alcohol)/epoxy hydrogels.” 2016. Web. 02 Mar 2021.
Vancouver:
Jabarulla Khan M. Mechanically strong poly (vinyl alcohol)/epoxy hydrogels. [Internet] [Thesis]. Deakin University; 2016. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/10536/DRO/DU:30102709.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Jabarulla Khan M. Mechanically strong poly (vinyl alcohol)/epoxy hydrogels. [Thesis]. Deakin University; 2016. Available from: http://hdl.handle.net/10536/DRO/DU:30102709
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Manitoba
13.
Kheirollahi Nataj Bisheh, Hossein.
Assessment of hip fracture risk using cross-section strain energy determined from QCT-based finite element model.
Degree: Mechanical Engineering, 2015, University of Manitoba
URL: http://hdl.handle.net/1993/30774
► Accurate assessment of hip fracture risk is very important to prevent hip fracture and to monitor the effect of a treatment. A subject-specific QCT-based finite…
(more)
▼ Accurate assessment of hip fracture risk is very important to prevent hip fracture and to monitor the effect of a treatment. A
subject-specific QCT-based finite element model was constructed to assess hip fracture risk at the critical locations of femur during the single-leg stance and the sideways fall. The aim of this study was to improve the prediction of hip fracture risk by introducing a more proper failure criterion to more accurately describe bone failure mechanism. Hip fracture risk index was defined using the
strain energy criterion, which is able to integrally consider information such as stresses, strains and material properties in bone failure. It was found that the femoral neck and the intertrochanteric region have higher fracture risk than other part of the femur, probably owing to the larger content of cancellous bone in these regions. The study results also suggested that women are more prone to hip fracture than men. The effects of different parameters such as age, body height, weight, and BMI on hip fracture risk were also investigated in this study. The findings in this study have a good agreement with those clinical observations reported in the literature. The main contributions from this study include: (1) introducing an algorithm for hip fracture risk assessment at the critical locations of femur using the
strain energy criterion and QCT-based finite element modeling, (2) theoretically more reasonable definition of hip fracture risk index based on the
strain energy criterion, and (3) a semi-automatic finite element analysis and automatic calculation of hip fracture risk index at the critical locations of femur using in-house developed computer codes. The proposed hip fracture risk index based on the
strain energy criterion will be a promising tool for more accurate assessment of hip fracture risk. However, experimental validation should be conducted before its clinical applications.
Advisors/Committee Members: Luo, Yunhua (Mechanical Engineering) (supervisor), Peng, Qingjin (Mechanical Engineering) Lin, Francis (Physics and Astronomy) (examiningcommittee).
Subjects/Keywords: Hip fracture risk; Strain energy; Finite element analysis; Osteoporotic fracture
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Kheirollahi Nataj Bisheh, H. (2015). Assessment of hip fracture risk using cross-section strain energy determined from QCT-based finite element model. (Masters Thesis). University of Manitoba. Retrieved from http://hdl.handle.net/1993/30774
Chicago Manual of Style (16th Edition):
Kheirollahi Nataj Bisheh, Hossein. “Assessment of hip fracture risk using cross-section strain energy determined from QCT-based finite element model.” 2015. Masters Thesis, University of Manitoba. Accessed March 02, 2021.
http://hdl.handle.net/1993/30774.
MLA Handbook (7th Edition):
Kheirollahi Nataj Bisheh, Hossein. “Assessment of hip fracture risk using cross-section strain energy determined from QCT-based finite element model.” 2015. Web. 02 Mar 2021.
Vancouver:
Kheirollahi Nataj Bisheh H. Assessment of hip fracture risk using cross-section strain energy determined from QCT-based finite element model. [Internet] [Masters thesis]. University of Manitoba; 2015. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/1993/30774.
Council of Science Editors:
Kheirollahi Nataj Bisheh H. Assessment of hip fracture risk using cross-section strain energy determined from QCT-based finite element model. [Masters Thesis]. University of Manitoba; 2015. Available from: http://hdl.handle.net/1993/30774

Brigham Young University
14.
Wilson, Mary Elizabeth.
Techniques for Using Internal Strain-Energy Storage and Release inOrigami-Based Mechanical Systems.
Degree: MS, 2019, Brigham Young University
URL: https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=8730&context=etd
► The objective of this thesis is to develop and demonstrate techniques for self-deployment of origami-based mechanical systems achieved through internal strain-energy storage and release, with…
(more)
▼ The objective of this thesis is to develop and demonstrate techniques for self-deployment of origami-based mechanical systems achieved through internal strain-energy storage and release, with special application to medical implant devices. The potential of compliant mechanisms and related origami-based mechanical systems to store strain-energy make them ideal candidates forapplications requiring an actuation or deployment process, such as space system arrays and minimally invasive surgical devices. The objective of this thesis is achieved by first categorizing differentdeployment methods in origami-based, deployable mechanisms and then further exploring the use of strain energy to facilitate actuation in deployable mechanisms. With this understanding inplace, there are opportunities using strain energy to develop new approaches to deploy particular mechanical systems. These origami-based mechanisms have the ability to improve devices in themedical field. This work contributes to the knowledge base of self actuating deployable structures in origami-based mechanical systems by developing design concepts and models for strain energystorage and release. By developing the foundational characteristics for self-actuation, the work will be demonstrated thorough applications in medical implant devices.
Subjects/Keywords: Mary Elizabeth Wilson; origami-based design; strain-energy; self-deployment; Engineering
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Wilson, M. E. (2019). Techniques for Using Internal Strain-Energy Storage and Release inOrigami-Based Mechanical Systems. (Masters Thesis). Brigham Young University. Retrieved from https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=8730&context=etd
Chicago Manual of Style (16th Edition):
Wilson, Mary Elizabeth. “Techniques for Using Internal Strain-Energy Storage and Release inOrigami-Based Mechanical Systems.” 2019. Masters Thesis, Brigham Young University. Accessed March 02, 2021.
https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=8730&context=etd.
MLA Handbook (7th Edition):
Wilson, Mary Elizabeth. “Techniques for Using Internal Strain-Energy Storage and Release inOrigami-Based Mechanical Systems.” 2019. Web. 02 Mar 2021.
Vancouver:
Wilson ME. Techniques for Using Internal Strain-Energy Storage and Release inOrigami-Based Mechanical Systems. [Internet] [Masters thesis]. Brigham Young University; 2019. [cited 2021 Mar 02].
Available from: https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=8730&context=etd.
Council of Science Editors:
Wilson ME. Techniques for Using Internal Strain-Energy Storage and Release inOrigami-Based Mechanical Systems. [Masters Thesis]. Brigham Young University; 2019. Available from: https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=8730&context=etd

Delft University of Technology
15.
Pascoe, J.A. (author).
Delamination of Bonded Repairs: A Damage Tolerance Approach.
Degree: 2012, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:38e5d9ac-8c04-48d5-801f-b0c9308f67fa
► A model was developed for delamination growth in bonded repair patches under constant amplitude fatigue loading. The model used the finite element method, employing the…
(more)
▼ A model was developed for delamination growth in bonded repair patches under constant amplitude fatigue loading. The model used the finite element method, employing the virtual crack closure technique, to determine the strain energy release rate (SERR) as a function of delamination length. Interaction effects between multiple delaminations, and the effect of delamination shape was also investigated. Fatigue cycling of coupon specimens was performed in order to find a relation between the SERR and the delamination growth rate. A power law (Paris-type) relation was established. Using this relation and the relation between SERR and delamination length, delamination growth predictions were produced. This predictions agreed well with the results of the coupon tests. A further validation by tests on more representative patch repair specimens was inconclusive due to the lack of delamination growth in the patch repair specimens.
Structural Integrity & Composites
Aerospace Engineering
Advisors/Committee Members: Alderliesten, R.C. (mentor), Rans, C.D. (mentor), Benedictus, R. (mentor).
Subjects/Keywords: fatigue; delamination; adhesive bonding; Strain Energy Release Rate
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Pascoe, J. A. (. (2012). Delamination of Bonded Repairs: A Damage Tolerance Approach. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:38e5d9ac-8c04-48d5-801f-b0c9308f67fa
Chicago Manual of Style (16th Edition):
Pascoe, J A (author). “Delamination of Bonded Repairs: A Damage Tolerance Approach.” 2012. Masters Thesis, Delft University of Technology. Accessed March 02, 2021.
http://resolver.tudelft.nl/uuid:38e5d9ac-8c04-48d5-801f-b0c9308f67fa.
MLA Handbook (7th Edition):
Pascoe, J A (author). “Delamination of Bonded Repairs: A Damage Tolerance Approach.” 2012. Web. 02 Mar 2021.
Vancouver:
Pascoe JA(. Delamination of Bonded Repairs: A Damage Tolerance Approach. [Internet] [Masters thesis]. Delft University of Technology; 2012. [cited 2021 Mar 02].
Available from: http://resolver.tudelft.nl/uuid:38e5d9ac-8c04-48d5-801f-b0c9308f67fa.
Council of Science Editors:
Pascoe JA(. Delamination of Bonded Repairs: A Damage Tolerance Approach. [Masters Thesis]. Delft University of Technology; 2012. Available from: http://resolver.tudelft.nl/uuid:38e5d9ac-8c04-48d5-801f-b0c9308f67fa

Delft University of Technology
16.
Norbruis, Joris (author).
Monitoring of Fatigue Damage for Offshore Wind Turbine Foundations: Investigating Operational Strain Estimation Techniques.
Degree: 2017, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:c201afe4-393e-409b-9ba0-7e69f6ca5710
► A global focus on the shift to renewable energy has introduced international targets for sustainable energy production, which have strongly increased the interest in offshore…
(more)
▼ A global focus on the shift to renewable
energy has introduced international targets for sustainable
energy production, which have strongly increased the interest in offshore wind turbines (OWT’s). In order to make offshore wind
energy even more competitive, the levelised cost of
energy for this industry has to be brought down. One of the OWT aspects that can still be developed further, with respect to the cost, is the foundation. As these structures usually have a design lifetime of 25 years and are subjected to cyclic loading, the foundation design is often driven by the fatigue limit state. In order to monitor the fatigue damage imposed on the structure, the stress history at certain “hot spots” needs to be known. Whereas measuring at every hot spot is not feasible, schemes have been developed to estimate the stresses based on a limited amount of sensors. In this study two distinct approaches for the estimation of operational strains are investigated. The first approach is based on interpolation of section forces which are obtained from
strain measurements at different levels; subsequently interpolated section forces can be transformed into strains using basic constitutive relations from structural mechanics. Since the
strain measurements have to be taken from the region of interest, i.e. below the mudline, Fibre-Bragg Grating
strain sensors are suggested for this application since they are both light and small, thus increasing their chance of survival during pile driving. It is found that the underlying assumption for the Section Force Interpolation (SFI) method, that the moment distribution between two measurement levels can be approximated as varying linearly with the distance to the point of interest, is valid. Therefore, the bending moment of a point in between two measurement levels can be calculated, as well as the related strains. The second approach is the Multi-Band Modal Decomposition and Expansion (MDE) technique that was introduced by Iliopoulos et al. [1]. This method uses numerically or experimentally obtained structural mode shapes to expand a number of vibrational response measurements into modal responses for a considered frequency band of the measurement data. For OWT’s one quasi-static and two dynamic bands are considered. The total operational strains are obtained by superposition of the
strain contributions estimated from each band. Modal
strain distributions and
strain sensors are used to estimate the
strain response in the quasi-static band and a combination of mode shapes, modal
strain distributions and accelerometers is used to estimate the strains contribution from the dynamic bands. Furthermore, it is investigated if the Mulit-Band MDE method can be improved to reduce its sensitivity to measurement noise; therefore the Least-Squares (LS) algorithm is replaced by a weighted LS algorithm which can assign weight to measurements according to their relative noise levels. A number of sensor arrangements and load cases are investigated to find the sensitivity of…
Advisors/Committee Members: Metrikine, Andrei (mentor), Fallais, Dominik (graduation committee), Ås, Sigmund (graduation committee), Luiken, Ralph (graduation committee), Delft University of Technology (degree granting institution), Norwegian University of Science and Technology (NTNU) (degree granting institution).
Subjects/Keywords: Offhsore; Wind Energy; Fatigue; Monopile; Monitoring; Strain Estimation
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
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APA (6th Edition):
Norbruis, J. (. (2017). Monitoring of Fatigue Damage for Offshore Wind Turbine Foundations: Investigating Operational Strain Estimation Techniques. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:c201afe4-393e-409b-9ba0-7e69f6ca5710
Chicago Manual of Style (16th Edition):
Norbruis, Joris (author). “Monitoring of Fatigue Damage for Offshore Wind Turbine Foundations: Investigating Operational Strain Estimation Techniques.” 2017. Masters Thesis, Delft University of Technology. Accessed March 02, 2021.
http://resolver.tudelft.nl/uuid:c201afe4-393e-409b-9ba0-7e69f6ca5710.
MLA Handbook (7th Edition):
Norbruis, Joris (author). “Monitoring of Fatigue Damage for Offshore Wind Turbine Foundations: Investigating Operational Strain Estimation Techniques.” 2017. Web. 02 Mar 2021.
Vancouver:
Norbruis J(. Monitoring of Fatigue Damage for Offshore Wind Turbine Foundations: Investigating Operational Strain Estimation Techniques. [Internet] [Masters thesis]. Delft University of Technology; 2017. [cited 2021 Mar 02].
Available from: http://resolver.tudelft.nl/uuid:c201afe4-393e-409b-9ba0-7e69f6ca5710.
Council of Science Editors:
Norbruis J(. Monitoring of Fatigue Damage for Offshore Wind Turbine Foundations: Investigating Operational Strain Estimation Techniques. [Masters Thesis]. Delft University of Technology; 2017. Available from: http://resolver.tudelft.nl/uuid:c201afe4-393e-409b-9ba0-7e69f6ca5710

University of Minnesota
17.
Conway, Thomas James.
Structural analysis of implantable biomedical heart assist device fixation.
Degree: PhD, Mechanical Engineering, 2013, University of Minnesota
URL: http://hdl.handle.net/11299/162448
► This thesis presents how experimentation, numerical simulation, optimization, and mathematical analysis, can be applied to study and improve the fixation of left-ventricle leads within a…
(more)
▼ This thesis presents how experimentation, numerical simulation, optimization, and mathematical analysis, can be applied to study and improve the fixation of left-ventricle leads within a cardiac vein. Left-ventricle cardiac leads for implantable pacemakers can lose fixation within a cardiac vein and dislodge. A common lead-fixation mechanism for left-ventricle leads was investigated that used a two- or three-dimensional shape at the distal end. The lead and the distal end are constructed from a metal coil that is pre-formed into a two- or three-dimensional shape. Analytical beam approximations of a coil were developed to determine how coil stiffness is affected by coil geometry and material. In-vitro experimentation with a radial force tester was used to measure the overall force between a two- or three-dimensional distal shape within a straight cylindrical tube. Data processing techniques using a moving average were applied to interpret the force data. Numerical simulation using a beam approximation for the coil determined the overall force between a distal shape and a straight cylindrical tube. The distribution of force along the distal shape, including tip force was also obtained from the simulation. The simulation models were validated with experimental data. Using numerical simulation, the model of the distal shape was changed to a spiral shape and then optimized. Since actual cardiac veins are curved, the simulation model was updated with a curved tube to determine how the distal shapes would perform. A mathematical analysis using engineering principles was also applied to obtain a simple analytical equation relating a deformed distal shape to force.
Subjects/Keywords: Cardiac lead; Coil; Fixation; Simulation; Spiral; Strain energy
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APA (6th Edition):
Conway, T. J. (2013). Structural analysis of implantable biomedical heart assist device fixation. (Doctoral Dissertation). University of Minnesota. Retrieved from http://hdl.handle.net/11299/162448
Chicago Manual of Style (16th Edition):
Conway, Thomas James. “Structural analysis of implantable biomedical heart assist device fixation.” 2013. Doctoral Dissertation, University of Minnesota. Accessed March 02, 2021.
http://hdl.handle.net/11299/162448.
MLA Handbook (7th Edition):
Conway, Thomas James. “Structural analysis of implantable biomedical heart assist device fixation.” 2013. Web. 02 Mar 2021.
Vancouver:
Conway TJ. Structural analysis of implantable biomedical heart assist device fixation. [Internet] [Doctoral dissertation]. University of Minnesota; 2013. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/11299/162448.
Council of Science Editors:
Conway TJ. Structural analysis of implantable biomedical heart assist device fixation. [Doctoral Dissertation]. University of Minnesota; 2013. Available from: http://hdl.handle.net/11299/162448

University of New Mexico
18.
Kashamolla, Maheshwar.
Mode I and Mode II Measurements For Stiction Failed Micro-Electro-Mechanical Systems.
Degree: Mechanical Engineering, 2011, University of New Mexico
URL: http://hdl.handle.net/1928/12045
► Among MicroElectroMechanical Systems (MEMS), the most common type of failure is stiction. Stiction is the unintended adhesion between two surfaces when they are in close…
(more)
▼ Among MicroElectroMechanical Systems (MEMS), the most common type of failure is stiction. Stiction is the unintended adhesion between two surfaces when they are in close proximity to each other. Various studies have been conducted in recent years to study stiction. Our research group has shown the in-service repair of the stiction failed MEMS devices is possible with structural vibrations. In order to further understand this phenomenon and better predict, theoretically, the onset of repair we have constructed an apparatus to determine the Mode I, II, and III interfacial adhesion energies of MEMS devices failed on a substrate. Though our method is general, we are specifically focused on devices created using the SUMMiT V process. An apparatus has been constructed that has 8 degrees-of-freedom between the MEMS device, the surface on which the device is failed, and a scanning interferometric microscope. Deflection profiles of stiction failed MEMS (micro-cantilevered beams 1000 microns long, 30 microns wide, and 2.3 microns thick) have their deflection profiles measured with nanometer resolution by a scanning interferometric microscope. Using the experimental apparatus that is constructed, we determine the Mode I and Mode II interfacial adhesion energies using two methodologies. The first method utilizes the peel test scheme to determine pure Mode-I and Mixed Mode (Mode I and II) interfacial adhesion energies. In order to determine the values for the interfacial adhesion energies a nonlinear model was developed for the deflection of a beam that accounts for its stretching.
Energy methods are then utilized to determine interfacial adhesion energies. Using the same experimental apparatus Mode II interfacial adhesion energies are measured directly with a novel technique developed in this work. This experimental method for measuring the Mode II interfacial adhesion energies for stiction failed MEMS devices uses a microcantilever beam (1500 μm long, 30 μm wide and 2.3 μm thick) attached to MEMS actuator with fix-fix beam flexure. Deflection of the spring is measured with the vernier scale of the actuator. Then a nonlinear elastic model for the fix—fix beam flexure is used to determine the interfacial adhesion
energy between the failed microcantilever beam and the surface. A theory is developed to measure the
strain energy release rates with finite crack growth, which gives the upper bounds of interfacial adhesion
energy for Mode II fracture problem. A separate theory is developed for infinitesimal crack growth, which gives the exact interfacial adhesion
energy of the Mode II fracture problem. Because the surface roughness plays an important role in the adhesion of MEMS structures, the surfaces of all structures have been characterized with an Atomic Force Microscope (AFM).
Advisors/Committee Members: Leseman, Zayd, Shen, Yu-Lin, Luhrs, Claudia.
Subjects/Keywords: Stiction; Microelectromechanical Systems; Strain Energy; Cantilever; MEMS Actuator
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
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APA (6th Edition):
Kashamolla, M. (2011). Mode I and Mode II Measurements For Stiction Failed Micro-Electro-Mechanical Systems. (Masters Thesis). University of New Mexico. Retrieved from http://hdl.handle.net/1928/12045
Chicago Manual of Style (16th Edition):
Kashamolla, Maheshwar. “Mode I and Mode II Measurements For Stiction Failed Micro-Electro-Mechanical Systems.” 2011. Masters Thesis, University of New Mexico. Accessed March 02, 2021.
http://hdl.handle.net/1928/12045.
MLA Handbook (7th Edition):
Kashamolla, Maheshwar. “Mode I and Mode II Measurements For Stiction Failed Micro-Electro-Mechanical Systems.” 2011. Web. 02 Mar 2021.
Vancouver:
Kashamolla M. Mode I and Mode II Measurements For Stiction Failed Micro-Electro-Mechanical Systems. [Internet] [Masters thesis]. University of New Mexico; 2011. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/1928/12045.
Council of Science Editors:
Kashamolla M. Mode I and Mode II Measurements For Stiction Failed Micro-Electro-Mechanical Systems. [Masters Thesis]. University of New Mexico; 2011. Available from: http://hdl.handle.net/1928/12045

University of Minnesota
19.
Win, Zaw.
The Role of Cellular Architecture in Vascular Smooth Muscle Function and Mechanics.
Degree: PhD, Biomedical Engineering, 2017, University of Minnesota
URL: http://hdl.handle.net/11299/206283
► Recently, there has been a push towards clinical translation of biomechanical models of tissues by developing patient-specific models to predict disease outcomes. To accomplish this,…
(more)
▼ Recently, there has been a push towards clinical translation of biomechanical models of tissues by developing patient-specific models to predict disease outcomes. To accomplish this, it is necessary to understand the functional and mechanical properties of all the tissue components, including individual cells. In vasculature, tissues and cells have different structures based on their functional role. The principle goal of this work is to determine how cellular architecture influences function and mechanical properties. To test our hypotheses, we have developed in vitro models to study the relationship between structure and function at the tissue and cellular scale. We have developed microfluidic capture array device (MCAD) technology to study cell structure and function in 2D engineered vascular smooth muscle tissue and have developed cellular micro-biaxial stretching (CμBS) microscopy to determine single cell mechanical properties. First, using MCAD technology we were able to vary initial cell-cell contact during seeding to bias the cellular architecture in confluent vascular smooth muscle tissues. We found that tissues seeded using initially higher cell–cell contact conditions yielded tissues with more elongated cellular architecture which lead to greater contractile function in engineered tissues. We then used CμBS microscopy to determine the elastic anisotropic mechanical properties of individual cells, given by the strain energy density (SED) function. We found that smooth muscle cells (VSMCs) with native-like architectures are highly anisotropic and can be described by a SED based on the actin cytoskeletal organization. Then, we utilized CμBS microscopy to characterize loading and unloading mechanics of VSMCs. We found that VSMCs exhibit architecture-dependent anisotropic hysteresis where highly structured VSMCs exhibit typical hysteresis associated with viscous loss when stretched in the direction of actin fiber alignment but exhibit reverse hysteresis when stretched in the direction orthogonal to actin fiber alignment. We then modeled the observed hysteresis using two models: a quasi-linear (QLV) model and a Hill-type active fiber model and found that the QLV model was insufficient to characterize the anisotropic hysteresis but the Hill-type active fiber model was able to predict the anisotropic hysteresis in highly-organized VSMCs.
Subjects/Keywords: actin; mechanobiology; strain energy density; vascular smooth musle
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
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APA (6th Edition):
Win, Z. (2017). The Role of Cellular Architecture in Vascular Smooth Muscle Function and Mechanics. (Doctoral Dissertation). University of Minnesota. Retrieved from http://hdl.handle.net/11299/206283
Chicago Manual of Style (16th Edition):
Win, Zaw. “The Role of Cellular Architecture in Vascular Smooth Muscle Function and Mechanics.” 2017. Doctoral Dissertation, University of Minnesota. Accessed March 02, 2021.
http://hdl.handle.net/11299/206283.
MLA Handbook (7th Edition):
Win, Zaw. “The Role of Cellular Architecture in Vascular Smooth Muscle Function and Mechanics.” 2017. Web. 02 Mar 2021.
Vancouver:
Win Z. The Role of Cellular Architecture in Vascular Smooth Muscle Function and Mechanics. [Internet] [Doctoral dissertation]. University of Minnesota; 2017. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/11299/206283.
Council of Science Editors:
Win Z. The Role of Cellular Architecture in Vascular Smooth Muscle Function and Mechanics. [Doctoral Dissertation]. University of Minnesota; 2017. Available from: http://hdl.handle.net/11299/206283

Vanderbilt University
20.
Cummins, Joshua Joseph.
Characterization of a Pneumatic Strain Energy Accumulator: Efficiency and First Principles Models with Uncertainty Analysis.
Degree: PhD, Mechanical Engineering, 2016, Vanderbilt University
URL: http://hdl.handle.net/1803/11159
► Several technical needs were identified and addressed for advancing the Strain Energy Accumulator (SEA), which is an energy storage device consisting of an expandable rubber…
(more)
▼ Several technical needs were identified and addressed for advancing the
Strain Energy Accumulator (SEA), which is an
energy storage device consisting of an expandable rubber bladder inside of a rigid shroud that stores
energy in the form of pressure and
strain. First, multiscale modeling methods were investigated to estimate the homogenized elastic modulus of carbon nanotube (CNT) rubber. The result is homogenized modulus estimates ranging from a few times to almost 80 times the elastic modulus of rubber, indicating the need for validation of existing models or development of new models to estimate the modulus for matrix and inclusion materials having drastically dissimilar moduli. Second, an analytical methodology was developed for simultaneously characterizing the
energy storage in pneumatic and
strain energy systems including component efficiency. By incorporating uncertainty analysis, the efficiencies of the
strain energy accumulator are measured in over 2500 cycles of testing to be consistently over 93 %.
Third, system state efficiency models were developed and expanded. Through experimentation, the model was determined to be favorably conservative with system efficiency projections ranging from 31 % to over 60 % depending on the system configuration. In addition, materials challenges in high pressure applications led to the conceptual investigation of CNT elastomers offering improved material strength properties and the potential for self-sensing. In previous research, carbon nanotube sensor thread was tested as a distributed sensor on carbon fiber reinforced composites and was able to monitor
strain and detect damage in composite panels. The use of nanomaterials for self-sensing was extended in the current work with proof of concept tests performed on electrically conductive elastomers that exhibited the ability to monitor load and detect damage in specific directions.
Each of these contributions in the areas of materials modeling, uncertainty analysis, and component and system efficiency quantification techniques has helped to advance the
Strain Energy Accumulator technology.
Advisors/Committee Members: Eric J Barth (committee member), Sankaran Mahadevan (committee member), Thomas J Withrow (committee member), Florence Sanchez (committee member), Douglas E Adams (Committee Chair).
Subjects/Keywords: Efficiency; Modeling; Strain Energy; Pneumatics; Conductive Elastomers; Load and Damage Monitoring
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
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APA (6th Edition):
Cummins, J. J. (2016). Characterization of a Pneumatic Strain Energy Accumulator: Efficiency and First Principles Models with Uncertainty Analysis. (Doctoral Dissertation). Vanderbilt University. Retrieved from http://hdl.handle.net/1803/11159
Chicago Manual of Style (16th Edition):
Cummins, Joshua Joseph. “Characterization of a Pneumatic Strain Energy Accumulator: Efficiency and First Principles Models with Uncertainty Analysis.” 2016. Doctoral Dissertation, Vanderbilt University. Accessed March 02, 2021.
http://hdl.handle.net/1803/11159.
MLA Handbook (7th Edition):
Cummins, Joshua Joseph. “Characterization of a Pneumatic Strain Energy Accumulator: Efficiency and First Principles Models with Uncertainty Analysis.” 2016. Web. 02 Mar 2021.
Vancouver:
Cummins JJ. Characterization of a Pneumatic Strain Energy Accumulator: Efficiency and First Principles Models with Uncertainty Analysis. [Internet] [Doctoral dissertation]. Vanderbilt University; 2016. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/1803/11159.
Council of Science Editors:
Cummins JJ. Characterization of a Pneumatic Strain Energy Accumulator: Efficiency and First Principles Models with Uncertainty Analysis. [Doctoral Dissertation]. Vanderbilt University; 2016. Available from: http://hdl.handle.net/1803/11159

University of New South Wales
21.
Jelwan, Jad.
A macroscopic model for predicting life of components subjected to elastic-plastic-creep deformation.
Degree: Mechanical & Manufacturing Engineering, 2012, University of New South Wales
URL: http://handle.unsw.edu.au/1959.4/51503
;
https://unsworks.unsw.edu.au/fapi/datastream/unsworks:10190/SOURCE02?view=true
► For efficient design of pressure components, and cost effective extension of lives of existing components, an analyst should allow for complex behaviour of components when…
(more)
▼ For efficient design of pressure components, and cost effective extension of lives of existing components, an analyst should allow for complex behaviour of components when they are subjected to plasticity and creep deformation. Strictly, there are not many models that can accurately and pragmatically be used to predict the elastic-plastic-creep lives of components. The existing models are mainly applicable to elastic-creep cases, but even these models are either too complex, not practical or they are not sufficiently accurate. This thesis proposes an accurate paradigm for predicting the lives of such components. The application of the proposed paradigm to an internally pressurized vessel shows that the elastic-plastic-creep life of the component can be predicted with an error of less than 10%.This thesis concentrates on creep and plasticity damage. Currently, there is no generally accepted expression for the damage functionD=f(D_p,D_cr), and failure models that combine plasticity and creep. The model proposes that the damage induced in the material is directly related to the internal
energy density absorbed at critically loaded regions in the material. As a result, the proposed model takes into account both internal forces (stresses) and deformation (strains) yet it is simple to use in practice owing to its scalar nature. The proposed model assumes that the component is defect free and contains stress concentrators. Numerical analysis has been conducted until the failure point, using the FEA code developed by the author, to include the tertiary creep stage. Both elastic-creep and elastic-plastic-creep analysis has been performed. The stress redistribution has been studied within a component for each case, to assess a suitable safety factor addressing the failure mechanism of concern. Serious consideration is recognized to an appropriate weld strength factor which would be applied to the welded pressurised vessel, in order to improve the design against creep. The proposed model does not require material parameters whose evaluation is cumbersome and uneconomic. It is obvious that any uncertainties in the pertinent material properties, loading and the geometry of the component can substantially increase the error in the predicted lives of the components. To ease this problem, appropriate sensitivity analysis was conducted to cover all of these uncertainties.
Advisors/Committee Members: Chowdhury, Mahiuddin, Mechanical & Manufacturing Engineering, Faculty of Engineering, UNSW, Pierce, Garth, Mechanical & Manufacturing Engineering, Faculty of Engineering, UNSW.
Subjects/Keywords: Finite Element Analysis; Elastic-Plastic-Creep; Strain Energy Density
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Jelwan, J. (2012). A macroscopic model for predicting life of components subjected to elastic-plastic-creep deformation. (Doctoral Dissertation). University of New South Wales. Retrieved from http://handle.unsw.edu.au/1959.4/51503 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:10190/SOURCE02?view=true
Chicago Manual of Style (16th Edition):
Jelwan, Jad. “A macroscopic model for predicting life of components subjected to elastic-plastic-creep deformation.” 2012. Doctoral Dissertation, University of New South Wales. Accessed March 02, 2021.
http://handle.unsw.edu.au/1959.4/51503 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:10190/SOURCE02?view=true.
MLA Handbook (7th Edition):
Jelwan, Jad. “A macroscopic model for predicting life of components subjected to elastic-plastic-creep deformation.” 2012. Web. 02 Mar 2021.
Vancouver:
Jelwan J. A macroscopic model for predicting life of components subjected to elastic-plastic-creep deformation. [Internet] [Doctoral dissertation]. University of New South Wales; 2012. [cited 2021 Mar 02].
Available from: http://handle.unsw.edu.au/1959.4/51503 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:10190/SOURCE02?view=true.
Council of Science Editors:
Jelwan J. A macroscopic model for predicting life of components subjected to elastic-plastic-creep deformation. [Doctoral Dissertation]. University of New South Wales; 2012. Available from: http://handle.unsw.edu.au/1959.4/51503 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:10190/SOURCE02?view=true

Iowa State University
22.
Scheirer, Nathan.
Generation and optimization of fiber layup on curved composite structures.
Degree: 2020, Iowa State University
URL: https://lib.dr.iastate.edu/etd/18218
► Typically, in finite element model analysis and automated fiber placement, composite fiber orientations are computed using either simple coordinate axis rotations or a complicated full…
(more)
▼ Typically, in finite element model analysis and automated fiber placement, composite fiber orientations are computed using either simple coordinate axis rotations or a complicated full analysis model. The former performs well on simple surfaces with single axis curvature but degrades in performance when used on doubly-curved surfaces due to fiber crossing and buckling. A full analysis model provides the accuracy of a truly physically based solution, however this process can be quite extensive and does not lend itself well to industrial use.
Therefore, this work presents a new two-step process for defining optimal composite fiber paths for use in automated fiber placement machines and finite element analysis models. Building upon work done previously in the area of discrete geodesic path generation, a method for optimizing fast approximate geodesic paths on triangular meshes using a strain energy minimization technique is presented. A comparison of the effectiveness of this process with those already discussed in the literature show how this process is fast, accurate, and ready to use in commercial applications. This study also shows how this process effectively finds optimal fiber paths on complex, non-developable surfaces, which will improve finite element analysis models and provide composite manufacturers with the ability to create components with complex geometry. Improvements to this process are discussed and have been implemented such as utilizing the parallel computing capabilities of a GPU, which speeds up the process by computing geodesics in parallel for large surfaces. The algorithms presented in this study are available freely online and have been successfully integrated into an automated finite-element model-building software called De-La-Mo (https://idealab-isu.github.io/autofiber/).
Subjects/Keywords: Approximate geodesics; Fiber layup; Fiber-reinforced composites; Strain energy optimization
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
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APA (6th Edition):
Scheirer, N. (2020). Generation and optimization of fiber layup on curved composite structures. (Thesis). Iowa State University. Retrieved from https://lib.dr.iastate.edu/etd/18218
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Scheirer, Nathan. “Generation and optimization of fiber layup on curved composite structures.” 2020. Thesis, Iowa State University. Accessed March 02, 2021.
https://lib.dr.iastate.edu/etd/18218.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Scheirer, Nathan. “Generation and optimization of fiber layup on curved composite structures.” 2020. Web. 02 Mar 2021.
Vancouver:
Scheirer N. Generation and optimization of fiber layup on curved composite structures. [Internet] [Thesis]. Iowa State University; 2020. [cited 2021 Mar 02].
Available from: https://lib.dr.iastate.edu/etd/18218.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Scheirer N. Generation and optimization of fiber layup on curved composite structures. [Thesis]. Iowa State University; 2020. Available from: https://lib.dr.iastate.edu/etd/18218
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Toledo
23.
Hossain Bhuiyan , Md Emran.
Dynamic Modeling and Analysis of Strain Energy Deployment of
an Origami Flasher.
Degree: MS, Mechanical Engineering, 2017, University of Toledo
URL: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1501870672129919
► There are lot of engineering fields where deployable structures are very important. Among them some applications require to develop a structure and deployment mechanism that…
(more)
▼ There are lot of engineering fields where deployable
structures are very important. Among them some applications require
to develop a structure and deployment mechanism that unfolds from a
compact, folded form to a large array. Initially, flexible
materials have been explored as a potential solution for deployable
structures. While they have some positive aspects, they also have
some negative aspects as well. Then, Origami, the Japanese art of
paper folding, has been explored as a great source to these
engineering designs. Among various origami patterns, the flasher,
pattern (an origami base that folds into a 3D structure that can be
radially deployed into a 2Dsurface) has been recognized for its
potential application in the deployment of largestructures from
relatively small volumes. Accurate and practical dynamic models
areessential in order to successfully design these deployable
structures.In this analysis, a dynamic model of a flasher is
created using multibody dynamic(MBD) simulation software. The MBD
model is created automatically by a series ofscripts that transform
a crease pattern into a fully defined engineering model. Such
astructure can be internally deployed (by smart materials or stored
strain energy) orexternally (by actuators or inertial forces). This
analysis focuses on the
strain energydeployment method. The primary
focus is to investigate the deployment time, theforce and torque
distributions throughout the structure, the bending angle of
thepanels, reaction torque at the center, kinetic
energy of the
panels, the trajectoryof different vertices during the deployment,
and the rigid foldability of the flasher pattern.Parametric studies
of the flasher pattern were performed in two ways. Initially, the
effects of various design parameters like the stiffness of panel
joints, density of panel materials, the edge length of the center
polygon, and the thickness of the panel on the dynamic performance
were investigated. Parametric studies of various flasher folding
patterns were also performed by varying three basic geometric
parameters: (1) the number of sides of the center polygon, (2) the
number of rings comprising the array, and (3) the number of
radially-distributed elements of each ring. In this analysis, the
effects of these three parameters on the dynamic performance of the
flasher are studied using multibody dynamic (MBD) simulation
software. As a basis for comparison, all the designs are held to
the same surface area in the deployed state. Each MBDmodel is
created automatically by the aforementioned scripts. The primary
focus is toinvestigate the variation of (a) the deployment time,
(b) reaction torque at the centerof the flasher, (c) force and
torque distribution in the entire structure, (d) bendingangle of
the panels, and (e) rigid foldability as a result of changes in the
previouslymentioned three basic geometric parameters.The overall
effort provides insight to force and torque distribution within
thestructure, which can guide the placement of integrated smart
material actuators orsimilarly…
Advisors/Committee Members: Trease, Dr. Brian (Advisor).
Subjects/Keywords: Mechanical Engineering; Origami Engineering, Flasher pattern, Deployment method,
Strain energy deployment
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Hossain Bhuiyan , M. E. (2017). Dynamic Modeling and Analysis of Strain Energy Deployment of
an Origami Flasher. (Masters Thesis). University of Toledo. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=toledo1501870672129919
Chicago Manual of Style (16th Edition):
Hossain Bhuiyan , Md Emran. “Dynamic Modeling and Analysis of Strain Energy Deployment of
an Origami Flasher.” 2017. Masters Thesis, University of Toledo. Accessed March 02, 2021.
http://rave.ohiolink.edu/etdc/view?acc_num=toledo1501870672129919.
MLA Handbook (7th Edition):
Hossain Bhuiyan , Md Emran. “Dynamic Modeling and Analysis of Strain Energy Deployment of
an Origami Flasher.” 2017. Web. 02 Mar 2021.
Vancouver:
Hossain Bhuiyan ME. Dynamic Modeling and Analysis of Strain Energy Deployment of
an Origami Flasher. [Internet] [Masters thesis]. University of Toledo; 2017. [cited 2021 Mar 02].
Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1501870672129919.
Council of Science Editors:
Hossain Bhuiyan ME. Dynamic Modeling and Analysis of Strain Energy Deployment of
an Origami Flasher. [Masters Thesis]. University of Toledo; 2017. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1501870672129919

Virginia Tech
24.
Kwansa, Albert Lawrence.
Molecular Dynamics and Mechanical Behavior of Collagen Type I and its Lysine/Hydroxylysine-derived Crosslinks.
Degree: PhD, Biomedical Engineering, 2013, Virginia Tech
URL: http://hdl.handle.net/10919/50933
► Collagen type I is an extracellular matrix (ECM) protein that affords tensile strength and biological scaffolding to numerous vertebrate and invertebrate tissues. This strength has…
(more)
▼ Collagen type I is an extracellular matrix (ECM) protein that affords tensile strength and biological scaffolding to numerous vertebrate and invertebrate tissues. This strength has been attributed to the triple-helical structure of the collagen type I molecules, their organization into fibrils, and the presence of inter-molecular, covalent, enzymatic crosslinks. There are several different types of these crosslinks; their composition is tissue-specific and dependent upon factors such as age and health. Furthermore, these enzymatic crosslinks tend to form specifically at amino/N- and carboxy/C-terminal crosslinking sites. The mechanical behavior of collagen type I has been investigated, via experiment and theory, at the level of the molecule, microfibril, fibril, and fiber. However, the influence of different enzymatic crosslinks and their location (e.g., N- vs. C-site) on the mechanics of collagen type I has not been investigated in the literature. We employed molecular dynamics to model the mechanical behavior of uncrosslinked and crosslinked ~23-nm-long molecular segments and ~65-nm-long microfibril units of collagen type I. We then used these molecular simulations to construct a model of a single collagen type I fibril by considering the ~65-nm-long microfibril units arranged in series and then in parallel. When a uniaxial deformation was applied along the long axis of the molecular models, N-crosslinks aligned rapidly at lower strains followed by C-crosslinks more gradually at higher strains, leading to a two-stage crosslink recruitment. Then when comparing the influence of different enzymatic crosslinks, significant differences were observed for the high-
strain elastic moduli of our microfibril unit models, namely and in increasing order, uncrosslinked, immature crosslinked (HLKNL and deH-HLNL), mature HHL-crosslinked, and mature PYD-crosslinked. At the fibril level, our low- and high-
strain elastic moduli were in good agreement with some literature data, but in over-estimation of several other literature reports. Future work will seek to address simplifications and limitations in our modeling approach. A model such as this, accounting for different enzymatic crosslink types, may allow for the prediction of the mechanics of collagen fibrils and collagenous tissues, in representation of healthy and diseased states.
Advisors/Committee Members: Freeman, Joseph Warren (committeechair), De Vita, Raffaella (committeechair), Bevan, David R. (committee member), Gabler, Hampton Clay (committee member), Etzkorn, Felicia A. (committee member).
Subjects/Keywords: Fibril-forming; Fibrillar; Cross-link; Strain Energy; Elastic Modulus
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Kwansa, A. L. (2013). Molecular Dynamics and Mechanical Behavior of Collagen Type I and its Lysine/Hydroxylysine-derived Crosslinks. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/50933
Chicago Manual of Style (16th Edition):
Kwansa, Albert Lawrence. “Molecular Dynamics and Mechanical Behavior of Collagen Type I and its Lysine/Hydroxylysine-derived Crosslinks.” 2013. Doctoral Dissertation, Virginia Tech. Accessed March 02, 2021.
http://hdl.handle.net/10919/50933.
MLA Handbook (7th Edition):
Kwansa, Albert Lawrence. “Molecular Dynamics and Mechanical Behavior of Collagen Type I and its Lysine/Hydroxylysine-derived Crosslinks.” 2013. Web. 02 Mar 2021.
Vancouver:
Kwansa AL. Molecular Dynamics and Mechanical Behavior of Collagen Type I and its Lysine/Hydroxylysine-derived Crosslinks. [Internet] [Doctoral dissertation]. Virginia Tech; 2013. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/10919/50933.
Council of Science Editors:
Kwansa AL. Molecular Dynamics and Mechanical Behavior of Collagen Type I and its Lysine/Hydroxylysine-derived Crosslinks. [Doctoral Dissertation]. Virginia Tech; 2013. Available from: http://hdl.handle.net/10919/50933

Vanderbilt University
25.
Tucker, John Michael.
Design and Experimental Evaluation of a High Energy Density Elastomeric Strain Energy Accumulator.
Degree: MS, Mechanical Engineering, 2012, Vanderbilt University
URL: http://hdl.handle.net/1803/12014
► DESIGN AND EXPERIMENTAL EVALUATION OF A HIGH ENERGY DENSITY ELASTOMERIC STRAIN ENERGY ACCUMULATOR By John Michael Tucker Thesis under the direction of Professor Eric J.…
(more)
▼ DESIGN AND EXPERIMENTAL EVALUATION
OF A HIGH
ENERGY DENSITY ELASTOMERIC
STRAIN ENERGY ACCUMULATOR
By
John Michael Tucker
Thesis under the direction of Professor Eric J. Barth
This project entails the design and demonstration of a hydraulic accumulator which utilizes the deformation of an elastomeric material in order to capture and store
energy in the form of
strain energy. The primary application presented in this thesis is regenerative braking in hybrid vehicles. Motivations are presented for the choice of
strain as the
energy storage domain, and several candidate elastomers are evaluated for their
strain energy density and efficiency. The potential for compactness in a
strain energy accumulator is examined and demonstrated experimentally, and several accumulator designs as well as design metrics are proposed and discussed. Prototypes for two of these designs are presented and evaluated based on the proposed design metrics. Finally, this thesis includes direction and considerations for future work on
strain energy accumulator design and development.
Approved:Eric J. Barth Date:4/5/2012
Advisors/Committee Members: Thomas J. Withrow (committee member), Robert J. Webster III (committee member), Eric J. Barth (Committee Chair).
Subjects/Keywords: hydraulic; regenerative braking; strain energy; fluid power; hybrid; energy density; power density
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APA (6th Edition):
Tucker, J. M. (2012). Design and Experimental Evaluation of a High Energy Density Elastomeric Strain Energy Accumulator. (Thesis). Vanderbilt University. Retrieved from http://hdl.handle.net/1803/12014
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Tucker, John Michael. “Design and Experimental Evaluation of a High Energy Density Elastomeric Strain Energy Accumulator.” 2012. Thesis, Vanderbilt University. Accessed March 02, 2021.
http://hdl.handle.net/1803/12014.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Tucker, John Michael. “Design and Experimental Evaluation of a High Energy Density Elastomeric Strain Energy Accumulator.” 2012. Web. 02 Mar 2021.
Vancouver:
Tucker JM. Design and Experimental Evaluation of a High Energy Density Elastomeric Strain Energy Accumulator. [Internet] [Thesis]. Vanderbilt University; 2012. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/1803/12014.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Tucker JM. Design and Experimental Evaluation of a High Energy Density Elastomeric Strain Energy Accumulator. [Thesis]. Vanderbilt University; 2012. Available from: http://hdl.handle.net/1803/12014
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of New Mexico
26.
Kheyraddini Mousavi, Arash.
Characterization of Mechanical Properties at the Micro/Nano Scale: Stiction Failure of MEMS, High-Frequency Michelson Interferometry and Carbon NanoFibers.
Degree: Mechanical Engineering, 2015, University of New Mexico
URL: http://hdl.handle.net/1928/25788
► Different forces scale differently with decreasing length scales. Van der Waals and surface tension are generally ignored at the macro scale, but can become dominant…
(more)
▼ Different forces scale differently with decreasing length scales. Van der Waals and surface tension are generally ignored at the macro scale, but can become dominant at the micro and nano scales. This fact, combined with the considerable compliance and large surface areas of micro and nano devices, can leads to adhesion in MicroElectroMechanical Systems (MEMS) and NanoElectroMechanical Systems (NEMS) - a.k.a. stiction-failure. The adhesive forces between MEMS devices leading to stiction failure are characterized in this dissertation analytically and experimentally. Specifically, the adhesion
energy of poly-Si μcantilevers are determined experimentally through Mode II and mixed Mode I&II crack propagation experiments. Furthermore, the description of a high-frequency Michelson Interferometer is discussed for imaging of crack propagation of the μcantilevers with their substrate at the nano-scale and harmonic imaging of MEMS/NEMS. Van der Waals forces are also responsible for the adhesion in nonwoven carbon nanofiber networks. Experimental and modeling results are presented for the mechanical and electrical properties of nonwoven (random entanglements) of carbon nanofibers under relatively low and high-loads, both in tensions and compression. It was also observed that the structural integrity of these networks is controlled by mechanical entanglement and flexural rigidity of individual fibers as well as Hertzian forces at the fiber/fiber interface.
Advisors/Committee Members: Leseman, Zayd, Shen, Yu-Lin, Sorrentino, Francesco, Hossein-Zadeh, Mani.
Subjects/Keywords: Stiction Failure; Adhesion Energy; Critical Strain Energy Release Rate; MEMS; Interferometry; carbon nano foams
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Kheyraddini Mousavi, A. (2015). Characterization of Mechanical Properties at the Micro/Nano Scale: Stiction Failure of MEMS, High-Frequency Michelson Interferometry and Carbon NanoFibers. (Doctoral Dissertation). University of New Mexico. Retrieved from http://hdl.handle.net/1928/25788
Chicago Manual of Style (16th Edition):
Kheyraddini Mousavi, Arash. “Characterization of Mechanical Properties at the Micro/Nano Scale: Stiction Failure of MEMS, High-Frequency Michelson Interferometry and Carbon NanoFibers.” 2015. Doctoral Dissertation, University of New Mexico. Accessed March 02, 2021.
http://hdl.handle.net/1928/25788.
MLA Handbook (7th Edition):
Kheyraddini Mousavi, Arash. “Characterization of Mechanical Properties at the Micro/Nano Scale: Stiction Failure of MEMS, High-Frequency Michelson Interferometry and Carbon NanoFibers.” 2015. Web. 02 Mar 2021.
Vancouver:
Kheyraddini Mousavi A. Characterization of Mechanical Properties at the Micro/Nano Scale: Stiction Failure of MEMS, High-Frequency Michelson Interferometry and Carbon NanoFibers. [Internet] [Doctoral dissertation]. University of New Mexico; 2015. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/1928/25788.
Council of Science Editors:
Kheyraddini Mousavi A. Characterization of Mechanical Properties at the Micro/Nano Scale: Stiction Failure of MEMS, High-Frequency Michelson Interferometry and Carbon NanoFibers. [Doctoral Dissertation]. University of New Mexico; 2015. Available from: http://hdl.handle.net/1928/25788

University of Adelaide
27.
Akdag, Selahattin.
[EMBARGOED] Experimental investigation of damage evolution during strain burst in brittle rocks for deep mines.
Degree: 2019, University of Adelaide
URL: http://hdl.handle.net/2440/120726
► The increasing demand for resources and depletion of near ground mineral resources caused deeper mining operations under high-stress and high-temperature rock mass conditions. As a…
(more)
▼ The increasing demand for resources and depletion of near ground mineral resources caused deeper mining operations under high-stress and high-temperature rock mass conditions. As a results of this,
strain burst, which is the sudden and violent release of stored
strain energy during dynamic brittle failure of rocks, has become more prevalent and created considerable safety risks damaging underground infrastructures. This research focuses on the development of experimental methodologies to better understand the fundamental knowledge concerning the failure mechanism of
strain burst and the influence of thermal damage, high confining pressure and various loading rate on the overall mechanical behaviour of highly brittle granitic rocks leading to
strain burst.
Strain burst is related to the elastic stored
strain energy and how this stored
energy is released during the unstable spontaneous failure. Therefore, it is significant to investigate the
energy state during
strain burst from the viewpoint of
energy theory. In this sense, circumferential
strain controlled quasi-static tests on Class II rocks over a wide range of confining pressures at different heat-treatment temperatures were conducted to capture the snap-back behaviour and calculate excess
strain energy that is responsible for the spontaneous instability. A new
energy calculation method associated with acoustic emission (AE) was developed to express the propensity of
strain burst and investigate the post-peak
energy distribution characteristics for brittle rocks under the coupling influence of confinement and temperature. In order to quantify the micro-crack density and reveal the micro-fracture characteristics of the brittle rocks exposed to various temperatures, scanning electron microscopy (SEM) analysis was also conducted. This is highly relevant to link the excess
strain energy and the main failure mechanism triggering
strain burst under high-temperature condition. The failure process of
strain burst is the outcome of the unstable growth and coalescence of secondary micro-cracks. If the dissipative
energy to grow pre-existing cracks and the secondary cracks is smaller than the elastic stored
strain energy in rock masses, the residual
strain energy will be released suddenly in the form of kinetic
energy, resulting in ejecting high-velocity rock fragments. Therefore, understanding the crack initiation and propagation in rocks is of great concern for engineering stability and security. As an intrinsic property of rocks to resist crack initiation and propagation, the rock fracture toughness is the most significant material property in fracture mechanics. In this respect, the three-point bending method was applied using cracked chevron notched semi-circular bend (CCNSCB) granite specimens subjected to different temperatures under a wide range of loading rates in pure mode I. A suitable relation for the dimensionless stress intensity factor (𝑌∗) of SCB with chevron notch samples were presented based on the normalised crack length (𝛼) and half-distance between…
Advisors/Committee Members: Karakus, Murat (advisor), Nguyen, Giang D. (advisor), Taheri, Abbas (advisor), School of Civil, Environmental and Mining Engineering (school).
Subjects/Keywords: Strain burst; rockburst; energy balance; thermal damage; loading rate; fracture toughness; energy release rate; strain burst proneness; true-triaxial loading; triaxial compression test; acoustic emission; kinetic energy
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Akdag, S. (2019). [EMBARGOED] Experimental investigation of damage evolution during strain burst in brittle rocks for deep mines. (Thesis). University of Adelaide. Retrieved from http://hdl.handle.net/2440/120726
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Akdag, Selahattin. “[EMBARGOED] Experimental investigation of damage evolution during strain burst in brittle rocks for deep mines.” 2019. Thesis, University of Adelaide. Accessed March 02, 2021.
http://hdl.handle.net/2440/120726.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Akdag, Selahattin. “[EMBARGOED] Experimental investigation of damage evolution during strain burst in brittle rocks for deep mines.” 2019. Web. 02 Mar 2021.
Vancouver:
Akdag S. [EMBARGOED] Experimental investigation of damage evolution during strain burst in brittle rocks for deep mines. [Internet] [Thesis]. University of Adelaide; 2019. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/2440/120726.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Akdag S. [EMBARGOED] Experimental investigation of damage evolution during strain burst in brittle rocks for deep mines. [Thesis]. University of Adelaide; 2019. Available from: http://hdl.handle.net/2440/120726
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Vanderbilt University
28.
Muralidharan, Nitin.
Mechano-Electrochemistry for Advanced Energy Storage and Harvesting Devices.
Degree: PhD, Interdisciplinary Materials Science, 2018, Vanderbilt University
URL: http://hdl.handle.net/1803/12573
► A fundamental perception in the energy storage community is that mechanical processes accompanying electrochemical processes are an unavoidable by-product. However, the coupling between mechanics and…
(more)
▼ A fundamental perception in the
energy storage community is that mechanical processes accompanying electrochemical processes are an unavoidable by-product. However, the coupling between mechanics and electrochemistry termed as the ‘mechano-electrochemical coupling’ is a powerful yet unexplored tool. Using principles of elastic
strain engineering, we demonstrate controllable modulation of electrochemical parameters governing
energy storage systems. Leveraging the shape memory properties of NiTi alloys, redox potentials and diffusion coefficient modulations for
energy storage materials were achieved as a function of applied
strain. Building off these principles, we developed electrochemical-mechanical
energy harvesters for harnessing ambient mechanical
energy at very low frequencies (<5 Hz), a regime where the conventional state-of the art piezoelectric and triboelectric
energy harvesters have drastically reduced performances. We also highlight frequency tuning capabilities in this class of
energy harvesters owing to the inherent differences in various battery electrode chemistries for use in human motion harvesting and sensing applications and multifunctional transient
energy harvesting and storage devices. Additionally, to further illustrate the relationship between mechanical and electrochemical properties, we developed multifunctional structural supercapacitor and battery composites for use in load-bearing applications. Overall, these approaches provide paradigm shifting fundamental insights as well as create a framework for developing such multifunctional
energy storage/harvesting architectures for a multitude of applications.
Advisors/Committee Members: Dr. Greg Walker (committee member), Dr. Rizia Bardhan (committee member), Dr. Leon Bellan (committee member), Dr. Piran Kidambi (committee member), Dr. Cary Pint (Committee Chair), Dr. Douglas Adams (Committee Chair).
Subjects/Keywords: electrochemical mechanical coupling; energy harvesting; in-situ; strain; stress; mechanical processes; elastic strain engineering; strain setting; substrate strains; shapememory alloy; superelastic; multifunctional energy storage; transient energy harvesters; transient energy storage; pseudocapacitors; supercapacitors; load-bearing; structural; human motion harvesting; modulating electrochemistry; mechano-electrochemistry; advanced energy storage; advanced energy harvesting; low frequency energy harvesting; ambient energy harvesting; electrochemical-mechanical energy harvesting; Nitinol; battery mechanics; strain engineering; energy storage
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Muralidharan, N. (2018). Mechano-Electrochemistry for Advanced Energy Storage and Harvesting Devices. (Doctoral Dissertation). Vanderbilt University. Retrieved from http://hdl.handle.net/1803/12573
Chicago Manual of Style (16th Edition):
Muralidharan, Nitin. “Mechano-Electrochemistry for Advanced Energy Storage and Harvesting Devices.” 2018. Doctoral Dissertation, Vanderbilt University. Accessed March 02, 2021.
http://hdl.handle.net/1803/12573.
MLA Handbook (7th Edition):
Muralidharan, Nitin. “Mechano-Electrochemistry for Advanced Energy Storage and Harvesting Devices.” 2018. Web. 02 Mar 2021.
Vancouver:
Muralidharan N. Mechano-Electrochemistry for Advanced Energy Storage and Harvesting Devices. [Internet] [Doctoral dissertation]. Vanderbilt University; 2018. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/1803/12573.
Council of Science Editors:
Muralidharan N. Mechano-Electrochemistry for Advanced Energy Storage and Harvesting Devices. [Doctoral Dissertation]. Vanderbilt University; 2018. Available from: http://hdl.handle.net/1803/12573

Delft University of Technology
29.
Pascoe, J.A.
Characterisation of Fatigue Crack Growth in Adhesive Bonds.
Degree: 2016, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:ebbf552a-ce98-4ab6-b9cc-0b939e12ba8b
;
urn:NBN:nl:ui:24-uuid:ebbf552a-ce98-4ab6-b9cc-0b939e12ba8b
;
ebbf552a-ce98-4ab6-b9cc-0b939e12ba8b
;
10.4233/uuid:ebbf552a-ce98-4ab6-b9cc-0b939e12ba8b
;
urn:isbn:978-94-6186-718-6
;
urn:NBN:nl:ui:24-uuid:ebbf552a-ce98-4ab6-b9cc-0b939e12ba8b
;
http://resolver.tudelft.nl/uuid:ebbf552a-ce98-4ab6-b9cc-0b939e12ba8b
Subjects/Keywords: Adhesive Bonds; Crack Growth; Fatigue; Strain Energy Dissipation; Strain Energy Release
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Pascoe, J. A. (2016). Characterisation of Fatigue Crack Growth in Adhesive Bonds. (Doctoral Dissertation). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:ebbf552a-ce98-4ab6-b9cc-0b939e12ba8b ; urn:NBN:nl:ui:24-uuid:ebbf552a-ce98-4ab6-b9cc-0b939e12ba8b ; ebbf552a-ce98-4ab6-b9cc-0b939e12ba8b ; 10.4233/uuid:ebbf552a-ce98-4ab6-b9cc-0b939e12ba8b ; urn:isbn:978-94-6186-718-6 ; urn:NBN:nl:ui:24-uuid:ebbf552a-ce98-4ab6-b9cc-0b939e12ba8b ; http://resolver.tudelft.nl/uuid:ebbf552a-ce98-4ab6-b9cc-0b939e12ba8b
Chicago Manual of Style (16th Edition):
Pascoe, J A. “Characterisation of Fatigue Crack Growth in Adhesive Bonds.” 2016. Doctoral Dissertation, Delft University of Technology. Accessed March 02, 2021.
http://resolver.tudelft.nl/uuid:ebbf552a-ce98-4ab6-b9cc-0b939e12ba8b ; urn:NBN:nl:ui:24-uuid:ebbf552a-ce98-4ab6-b9cc-0b939e12ba8b ; ebbf552a-ce98-4ab6-b9cc-0b939e12ba8b ; 10.4233/uuid:ebbf552a-ce98-4ab6-b9cc-0b939e12ba8b ; urn:isbn:978-94-6186-718-6 ; urn:NBN:nl:ui:24-uuid:ebbf552a-ce98-4ab6-b9cc-0b939e12ba8b ; http://resolver.tudelft.nl/uuid:ebbf552a-ce98-4ab6-b9cc-0b939e12ba8b.
MLA Handbook (7th Edition):
Pascoe, J A. “Characterisation of Fatigue Crack Growth in Adhesive Bonds.” 2016. Web. 02 Mar 2021.
Vancouver:
Pascoe JA. Characterisation of Fatigue Crack Growth in Adhesive Bonds. [Internet] [Doctoral dissertation]. Delft University of Technology; 2016. [cited 2021 Mar 02].
Available from: http://resolver.tudelft.nl/uuid:ebbf552a-ce98-4ab6-b9cc-0b939e12ba8b ; urn:NBN:nl:ui:24-uuid:ebbf552a-ce98-4ab6-b9cc-0b939e12ba8b ; ebbf552a-ce98-4ab6-b9cc-0b939e12ba8b ; 10.4233/uuid:ebbf552a-ce98-4ab6-b9cc-0b939e12ba8b ; urn:isbn:978-94-6186-718-6 ; urn:NBN:nl:ui:24-uuid:ebbf552a-ce98-4ab6-b9cc-0b939e12ba8b ; http://resolver.tudelft.nl/uuid:ebbf552a-ce98-4ab6-b9cc-0b939e12ba8b.
Council of Science Editors:
Pascoe JA. Characterisation of Fatigue Crack Growth in Adhesive Bonds. [Doctoral Dissertation]. Delft University of Technology; 2016. Available from: http://resolver.tudelft.nl/uuid:ebbf552a-ce98-4ab6-b9cc-0b939e12ba8b ; urn:NBN:nl:ui:24-uuid:ebbf552a-ce98-4ab6-b9cc-0b939e12ba8b ; ebbf552a-ce98-4ab6-b9cc-0b939e12ba8b ; 10.4233/uuid:ebbf552a-ce98-4ab6-b9cc-0b939e12ba8b ; urn:isbn:978-94-6186-718-6 ; urn:NBN:nl:ui:24-uuid:ebbf552a-ce98-4ab6-b9cc-0b939e12ba8b ; http://resolver.tudelft.nl/uuid:ebbf552a-ce98-4ab6-b9cc-0b939e12ba8b

NSYSU
30.
Wang, Yung-Wen.
Thermo-mechanical Finite Element Model in BGA Solder Joints Fatigue Life Analysis.
Degree: Master, Mechanical and Electro-Mechanical Engineering, 2014, NSYSU
URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0712114-233942
► As the microelectronic package develops technologies for fabrication smaller, faster and economical, thermal management play an important role. Temperature variation caused by either environmental changes…
(more)
▼ As the microelectronic package develops technologies for fabrication smaller, faster and economical, thermal management play an important role. Temperature variation caused by either environmental changes or power consumption, and the coefficient of thermal expansion (CTE) mismatch between different packages material lead to stress and
strain in package assemblies especially in solder joint. This research builds up the viscoplastic finite element model to analyze thermal-mechanical behavior of solder joint under temperature cycling loading. The finite element software ANASYS is used to calculate the accumulative
strain energy density of solder joint. Furthermore, a design of experiment (DoE) with factorial analysis is used to investigate the reliability impact of the design parameters, including solder material properties and geometry. Finally, we use the analysis of variance (ANOVA) to obtain the regression model and to find out optimization factors.
The purpose of this research is to provide a quickly experimental design assessment to improve reliability of the solder joint. The assessment model can be used to predict the accumulative
strain energy density and fatigue life of the solder joint in terms of cycles to failure. The smaller plastic
strain can be achieved through a better combination of material properties and geometry parameters, which is helpful of packaging design before to manufacturing.
Advisors/Committee Members: Mei-Ling Wu (committee member), Yeong-Shu Chen (chair), Ben-Je Lwo (chair), Sheng-Chih Shen (chair).
Subjects/Keywords: Fatigue Life; Design of Experiment; ANOVA; Accumulative Strain Energy Density; BGA Package
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Wang, Y. (2014). Thermo-mechanical Finite Element Model in BGA Solder Joints Fatigue Life Analysis. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0712114-233942
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Wang, Yung-Wen. “Thermo-mechanical Finite Element Model in BGA Solder Joints Fatigue Life Analysis.” 2014. Thesis, NSYSU. Accessed March 02, 2021.
http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0712114-233942.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Wang, Yung-Wen. “Thermo-mechanical Finite Element Model in BGA Solder Joints Fatigue Life Analysis.” 2014. Web. 02 Mar 2021.
Vancouver:
Wang Y. Thermo-mechanical Finite Element Model in BGA Solder Joints Fatigue Life Analysis. [Internet] [Thesis]. NSYSU; 2014. [cited 2021 Mar 02].
Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0712114-233942.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Wang Y. Thermo-mechanical Finite Element Model in BGA Solder Joints Fatigue Life Analysis. [Thesis]. NSYSU; 2014. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0712114-233942
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
◁ [1] [2] [3] [4] [5] [6] [7] ▶
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