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Proceedings Papers

Durability of Woven Polymer Matrix Composites

Sneha R. Patel, Scott W. Case, Ken L. Reifsnider
Proc. ASME. IMECE98, Recent Advances in Mechanics of Aerospace Structures and Materials, 85-90, November 15–20, 1998
Publisher: American Society of Mechanical Engineers
Paper No: IMECE1998-0364
https://doi.org/10.1115/IMECE1998-0364
View Paper titled, Durability of Woven Polymer Matrix Composites
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Topics: Aircraft, Composite materials, Cracking (Materials), Damage, Delamination, Density, Durability, Failure, Failure mechanisms, Fatigue
Proceedings Papers

Durability of Ceramic Matrix Composites

Michael S. Pastor, Scott W. Case, Ken L. Reifsnider
Proc. ASME. IMECE98, Recent Advances in Mechanics of Aerospace Structures and Materials, 61-66, November 15–20, 1998
Publisher: American Society of Mechanical Engineers
Paper No: IMECE1998-0360
https://doi.org/10.1115/IMECE1998-0360
View Paper titled, Durability of Ceramic Matrix Composites
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Topics: Ceramic matrix composites, Ceramics, Composite materials, Damage, Ductility, Durability, Fatigue, Fiber reinforced ceramics, Gas turbines, High temperature
Proceedings Papers

Characterizing Static and Dynamic Mechanical Properties for Additive Manufactured ULTEM 9085 Used to Construct Flow Control Devices for Turbomachinery Applications

Khang D. Pham, Walter F. O’Brien, Scott W. Case
Proc. ASME. GT2018, Volume 6: Ceramics; Controls, Diagnostics, and Instrumentation; Education; Manufacturing Materials and Metallurgy, V006T24A008, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75430
https://doi.org/10.1115/GT2018-75430
View Paper titled, Characterizing Static and Dynamic Mechanical Properties for Additive Manufactured ULTEM 9085 Used to Construct Flow Control Devices for Turbomachinery Applications
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Topics: Additive manufacturing, Flow control, Mechanical properties, Turbomachinery, Stress, Fatigue life, ASTM International, Fatigue properties, Tension, Extruding
Journal Articles

Development and Validation of a Uniaxial Nonlinear Viscoelastic Viscoplastic Stress Model for a Fuel Cell Membrane

Jessica A. May, Michael W. Ellis, David A. Dillard, Scott W. Case, Robert B. Moore, Yonqiang Li, Yeh-Hung Lai, Craig A. Gittleman
Journal: Journal of Electrochemical Energy Conversion and Storage
Publisher: ASME
Article Type: Research-Article
J. Electrochem. En. Conv. Stor. December 2015, 12(6): 061011.
Paper No: FC-15-1044
https://doi.org/10.1115/1.4032491
Published Online: January 29, 2016
View Article titled, Development and Validation of a Uniaxial Nonlinear Viscoelastic Viscoplastic Stress Model for a Fuel Cell Membrane
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Topics: Stress, Membranes, Creep, Constitutive equations, Fuel cells
Proceedings Papers

Multi-Objective Optimization of Axial Crush Performance of Square Metal–Composite Hybrid Tubes

Roozbeh Kalhor, Hossein Akbarshahi, Scott W. Case
Proc. ASME. IMECE2013, Volume 9: Mechanics of Solids, Structures and Fluids, V009T10A035, November 15–21, 2013
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2013-63071
https://doi.org/10.1115/IMECE2013-63071
View Paper titled, Multi-Objective Optimization of Axial Crush Performance of Square Metal–Composite Hybrid Tubes
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Topics: Metallic composites, Pareto optimization, Artificial neural networks, Stress, Composite materials, Computer software, Design, Fibers, Finite element analysis, Genetic algorithms
Proceedings Papers

Post-Fire Mechanical Properties and Hardness of 5083 and 6082 Aluminum Alloys

P. T. Summers, R. D. Matulich, Scott W. Case, Brian Lattimer
Proc. ASME. IMECE2012, Volume 3: Design, Materials and Manufacturing, Parts A, B, and C, 1251-1259, November 9–15, 2012
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2012-88175
https://doi.org/10.1115/IMECE2012-88175
View Paper titled, Post-Fire Mechanical Properties and Hardness of 5083 and 6082 Aluminum Alloys
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Topics: Aluminum alloys, Fire, Mechanical properties, Alloys, Temperature, Aluminum, Vickers hardness testing, Corrosion resistance, Extruding, Furnaces
Proceedings Papers

Development and Validation of a Non-Linear Viscoelastic Viscoplastic Stress Model for a PFCB/PVDF Fuel Cell Membrane

Jessica A. Wright, Michael W. Ellis, David A. Dillard, Scott W. Case, Robert B. Moore, Yongqiang Li, Yeh-Hung Lai, Craig S. Gittleman
Proc. ASME. IMECE2012, Volume 8: Mechanics of Solids, Structures and Fluids, 347-356, November 9–15, 2012
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2012-85427
https://doi.org/10.1115/IMECE2012-85427
View Paper titled, Development and Validation of a Non-Linear Viscoelastic Viscoplastic Stress Model for a PFCB/PVDF Fuel Cell Membrane
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Topics: Fuel cells, Membranes, Stress, Creep, Proton exchange membranes, Tension, Computer simulation, Cycles, Degrees of freedom, Failure
Proceedings Papers

Impact and Quasi-Static Mechanical Properties of a Carbon Fiber Reinforced Carbon Nanotube/Epoxy

Mehran Tehrani, Ayoub Y. Boroujeni, Timothy B. Hartman, Thomas P. Haugh, Scott W. Case, Marwan Al-Haik
Proc. ASME. IMECE2012, Volume 3: Design, Materials and Manufacturing, Parts A, B, and C, 1315-1320, November 9–15, 2012
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2012-86396
https://doi.org/10.1115/IMECE2012-86396
View Paper titled, Impact and Quasi-Static Mechanical Properties of a Carbon Fiber Reinforced Carbon Nanotube/Epoxy
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Topics: Carbon fibers, Carbon nanotubes, Epoxy adhesives, Epoxy resins, Mechanical properties, Multi-walled carbon nanotubes, Composite materials, Carbon reinforced plastics, Failure, Tensile strength
Proceedings Papers

Characterization of the Fracture Energy of a PFCB/PVDF Polymer Electrolyte Fuel Cell Membrane Using a Knife Slit Test

Ashley R. Gordon, Michael W. Ellis, David A. Dillard, Scott W. Case, Robert B. Moore, Yongqiang Li, Yeh-Hung Lai, Craig S. Gittleman
Proc. ASME. FUELCELL2012, ASME 2012 10th International Conference on Fuel Cell Science, Engineering and Technology, 251-257, July 23–26, 2012
Publisher: American Society of Mechanical Engineers
Paper No: FuelCell2012-91352
https://doi.org/10.1115/FuelCell2012-91352
View Paper titled, Characterization of the Fracture Energy of a PFCB/PVDF Polymer Electrolyte Fuel Cell Membrane Using a Knife Slit Test
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Topics: Electrolytes, Fracture (Materials), Fuel cells, Membranes, Polymers, Fracture (Process), Polymer blends, Proton exchange membranes, Block copolymers, Durability
Proceedings Papers

Preparation for the Fundamentals of Engineering Examination at Virginia Tech

David A. Dillard, Melissa D. Nipper, Scott W. Case, Alan A. Kornhauser
Proc. ASME. IMECE2011, Volume 5: Engineering Education and Professional Development, 191-197, November 11–17, 2011
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2011-63558
https://doi.org/10.1115/IMECE2011-63558
View Paper titled, Preparation for the Fundamentals of Engineering Examination at Virginia Tech
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Topics: Chemistry, Computer-aided engineering, Engineering degrees, Engineering disciplines, Engineering standards, Engineering students, Engineers, Ethics, Feedback, Licensing
Proceedings Papers

Stress-Lifetime Characterization of Proton Exchange Membrane Using 3-D Digital Image Correlation and Pressure-Loaded Blister Tests

Chase M. Siuta, Scott W. Case, David A. Dillard, Robert B. Moore, Michael W. Ellis, Yongqiang Li, Yeh-Hung Lai, Craig S. Gittleman
Proc. ASME. FUELCELL2011, ASME 2011 9th International Conference on Fuel Cell Science, Engineering and Technology, 809-816, August 7–10, 2011
Publisher: American Society of Mechanical Engineers
Paper No: FuelCell2011-54879
https://doi.org/10.1115/FuelCell2011-54879
View Paper titled, Stress-Lifetime Characterization of Proton Exchange Membrane Using 3-D Digital Image Correlation and Pressure-Loaded Blister Tests
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Topics: Pressure, Proton exchange membranes, Stress, Failure, Membranes, Damage, Fuel cells, Approximation, Deformation, Durability
Proceedings Papers

Using Multiscale Carbon Fiber/Carbon Nanotubes Composites for Damping Applications

Mehran Tehrani, Masoud Safdari, Scott W. Case, Marwan S. Al-Haik
Proc. ASME. SMASIS2011, ASME 2011 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, Volume 1, 129-133, September 18–21, 2011
Publisher: American Society of Mechanical Engineers
Paper No: SMASIS2011-5087
https://doi.org/10.1115/SMASIS2011-5087
View Paper titled, Using Multiscale Carbon Fiber/Carbon Nanotubes Composites for Damping Applications
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Topics: Carbon fibers, Carbon nanotubes, Composite materials, Damping, Ceramics, Nickel, Storage, Particulate matter, Yarns, ASTM International
Journal Articles

A Metric for Characterization of Multifunctional Fuel Cell Designs

Corydon D. Hilton, Daniel M. Peairs, John J. Lesko, Scott W. Case
Journal: Journal of Electrochemical Energy Conversion and Storage
Publisher: ASME
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. October 2011, 8(5): 051008.
https://doi.org/10.1115/1.4003760
Published Online: June 17, 2011
View Article titled, A Metric for Characterization of Multifunctional Fuel Cell Designs
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Topics: Fuel cells, Design
Journal Articles

The Effect of Mechanical Fatigue on the Lifetimes of Membrane Electrode Assemblies

Michael Pestrak, Yongqiang Li, Scott W. Case, David A. Dillard, Michael W. Ellis, Yeh-Hung Lai, Craig S. Gittleman
Journal: Journal of Electrochemical Energy Conversion and Storage
Publisher: ASME
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. August 2010, 7(4): 041009.
https://doi.org/10.1115/1.4000629
Published Online: April 7, 2010
View Article titled, The Effect of Mechanical Fatigue on the Lifetimes of Membrane Electrode Assemblies
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Topics: Bubbles, Cycles, Failure, Fatigue, Fracture (Materials), Fuel cells, Leakage, Membrane electrode assemblies, Membranes, Proton exchange membranes
Journal Articles

On the Use of Pressure-Loaded Blister Tests to Characterize the Strength and Durability of Proton Exchange Membranes

David A. Dillard, Yongqiang Li, Jacob R. Grohs, Scott W. Case, Michael W. Ellis, Yeh-Hung Lai, Michael K. Budinski, Craig S. Gittleman
Journal: Journal of Electrochemical Energy Conversion and Storage
Publisher: ASME
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. August 2009, 6(3): 031014.
https://doi.org/10.1115/1.3007431
Published Online: May 15, 2009
View Article titled, On the Use of Pressure-Loaded Blister Tests to Characterize the Strength and Durability of Proton Exchange Membranes
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Topics: Creep, Durability, Failure, Leakage, Membranes, Pressure, Proton exchange membranes, Rupture, Stress, Testing
Proceedings Papers

Using a Knife Slitting Test to Characterize the Fracture Resistance of Proton Exchange Membranes

Yongqiang Li, Jennifer Quincy, Scott W. Case, David A. Dillard, Michael Budinski, Yeh-Hung Lai
Proc. ASME. FUELCELL2006, ASME 2006 Fourth International Conference on Fuel Cell Science, Engineering and Technology, Parts A and B, 189-194, June 19–21, 2006
Publisher: American Society of Mechanical Engineers
Paper No: FUELCELL2006-97096
https://doi.org/10.1115/FUELCELL2006-97096
View Paper titled, Using a Knife Slitting Test to Characterize the Fracture Resistance of Proton Exchange Membranes
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Topics: Fracture (Materials), Proton exchange membranes, Failure, Fuel cells, Brittle fracture, Energy dissipation, Fracture mechanics, Membranes, Physics, Plasticity
Journal Articles

Relaxation of Proton Conductivity and Stress in Proton Exchange Membranes Under Strain

Dan Liu, Michael A. Hickner, Scott W. Case, John J. Lesko
Journal: Journal of Engineering Materials and Technology
Publisher: ASME
Article Type: Research Papers
J. Eng. Mater. Technol. October 2006, 128(4): 503–508.
https://doi.org/10.1115/1.2345441
Published Online: June 6, 2006
View Article titled, Relaxation of Proton Conductivity and Stress in Proton Exchange Membranes Under Strain
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Topics: Proton conductivity, Protons, Relaxation (Physics), Stress, Temperature, Water, Electrical conductivity, Thermal conductivity, Proton exchange membranes, Heat conduction
Journal Articles

The Thermo-Viscoelastic, Viscoplastic Characterization of Vetrotex 324∕Derakane 510A-40 Through T g

Steven E. Boyd, John J. Lesko, Scott W. Case
Journal: Journal of Engineering Materials and Technology
Publisher: ASME
Article Type: Research Papers
J. Eng. Mater. Technol. October 2006, 128(4): 586–594.
https://doi.org/10.1115/1.2345451
Published Online: April 13, 2006
View Article titled, The Thermo-Viscoelastic, Viscoplastic Characterization of Vetrotex 324∕Derakane 510A-40 Through T g
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Topics: Creep, Modeling, Stress, Temperature, Viscoelasticity
Journal Articles

Post-Curing Effects on Marine VARTM FRP Composite Material Properties for Test and Implementation

Jason J. Cain, Nathan L. Post, John J. Lesko, Scott W. Case, Yin-Nian Lin, Judy S. Riffle, Paul E. Hess
Journal: Journal of Engineering Materials and Technology
Publisher: ASME
Article Type: Research Papers
J. Eng. Mater. Technol. January 2006, 128(1): 34–40.
https://doi.org/10.1115/1.2128425
Published Online: June 8, 2005
View Article titled, Post-Curing Effects on Marine VARTM FRP Composite Material Properties for Test and Implementation
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Topics: Composite materials, Ester, Fatigue, Fourier transform infrared spectroscopy, Hardening (Curing), Laminates, Temperature, Resins, Creep, Fiber reinforced plastics
Journal Articles

Comparison of Methodologies for Determination of Fracture Strength of 8 mol % Yttria-Stabilized Zirconia Electrolyte Materials

Ke An, Howard G. Halverson, Kenneth L. Reifsnider, Scott W. Case, Marshall H. McCord
Journal: Journal of Electrochemical Energy Conversion and Storage
Publisher: ASME
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. May 2005, 2(2): 99–103.
https://doi.org/10.1115/1.1867974
Published Online: December 10, 2004
View Article titled, Comparison of Methodologies for Determination of Fracture Strength of 8 mol % Yttria-Stabilized Zirconia Electrolyte Materials
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Topics: Disks, Electrolytes, Finite element analysis, Fracture toughness, Pressure, Stress, Stress concentration, Testing, Solid oxide fuel cells, Displacement