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W. R. Chang
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Proceedings Papers

Dynamic Modeling of a Wind Hydrogen System

J. J. Hwang, W. R. Chang
Proc. ASME. ES2009, ASME 2009 3rd International Conference on Energy Sustainability, Volume 1, 253-259, July 19–23, 2009
Paper No: ES2009-90221
DOI: https://doi.org/10.1115/ES2009-90221
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Topics: Dynamic modeling, Hydrogen, Wind, Generators, Dynamics (Mechanics), Energy storage, Flow (Dynamics), Fluid dynamics, Fuel cells, Hydrogen storage
Journal Articles

Mass Transports in an Air-Breathing Cathode of a Proton Exchange Membrane Fuel Cell

J. J. Hwang, W. R. Chang, C. H. Chao, F. B. Weng, A. Su
Journal: Journal of Electrochemical Energy Conversion and Storage
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. November 2009, 6(4): 041003.
DOI: https://doi.org/10.1115/1.3081424
Published Online: August 11, 2009
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Topics: Catalysts, Current density, Electrodes, Electrolytes, Proton exchange membrane fuel cells, Electrochemical reactions, Porosity, Finite element analysis, Orifices, Flow (Dynamics)
Journal Articles

Adhesion Model for Metallic Rough Surfaces

W. R. Chang, I. Etsion, D. B. Bogy
Journal: Journal of Tribology
Article Type: Research Papers
J. Tribol. January 1988, 110(1): 50–56.
DOI: https://doi.org/10.1115/1.3261574
Published Online: January 1, 1988
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Topics: Adhesion, Surface roughness, Surface energy
Journal Articles

Static Friction Coefficient Model for Metallic Rough Surfaces

W. R. Chang, I. Etsion, D. B. Bogy
Journal: Journal of Tribology
Article Type: Research Papers
J. Tribol. January 1988, 110(1): 57–63.
DOI: https://doi.org/10.1115/1.3261575
Published Online: January 1, 1988
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Topics: Stiction, Surface roughness, Friction, Adhesion, Materials properties, Shear (Mechanics), Stress
Journal Articles

An Elastic-Plastic Model for the Contact of Rough Surfaces

W. R. Chang, I. Etsion, D. B. Bogy
Journal: Journal of Tribology
Article Type: Research Papers
J. Tribol. April 1987, 109(2): 257–263.
DOI: https://doi.org/10.1115/1.3261348
Published Online: April 1, 1987
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Topics: Surface roughness, Deformation