Roger D. Bradshaw, Ph.D.
Assistant Professor of Mechanical Engineering
203 Sackett Hall
(502) 852-6099
roger.bradshaw@louisville.edu
Research Interests
Dr. Bradshaw’s research interests focus on modeling the mechanical behavior of advanced polymer matrix composite material systems and design approaches for lightweight structure. Current efforts include modeling the static strength, fatigue and crack growth behavior of titanium-graphite fiber (TiGr) composites, the effect of waviness on the modulus of nanotube-reinforced polymers, and time-dependent behavior of polymers and polymer matrix composites.
Education
Ph.D. in Mechanical Engineering, Northwestern University,
1997
B.A. in History, Virginia Polytechnic Institute and State University, 1995
M.S. in Mechanical Engineering, Louisiana State University, 1991
B.S. in Mechanical Engineering, Virginia Polytechnic Institute and State
University, 1988
Experience
12/01 – present. Assistant Professor, Department of
Mechanical Engineering,
10/01 – present, Technical Advisor for Structural Damage Technology group, The Boeing Company, New York, NY
3/98 – 8/01, Senior Specialist Engineer, The Boeing
Company,
9/97 – 5/99, Lecturer, Department of Mechanical
Engineering,
6/88 – 9/93, Mechanical Development Engineer, Ethyl
Corporation,
Publications
Refereed Journals (click on link to open as PDF)
Bradshaw, R. D., F. T. Fisher and L. C. Brinson (2002). “Fiber Waviness in Nanotube-Reinforced Polymer Composites: II. Modeling Via Numerical Approximation of the Dilute Strain Concentration Tensor,” accepted by Composites Science and Technology.
F. T. Fisher, R. D. Bradshaw and L. C. Brinson (2002). “Fiber waviness in nanotube-reinforced polymer composites: I. Modulus predictions using effective nanotube properties,” accepted by Composites Science and Technology.
Fisher, F. T., R. D. Bradshaw, and L. C. Brinson (2002). “Effects of nanotube waviness on the modulus of nanotube-reinforced polymers”, Applied Physics Letters. v. 80, pp. 4647-4649.
Bradshaw, R. D. and L. C. Brinson (1999). “A Continuous Test Data Method to Determine a Reference Curve and Shift Rate for Isothermal Physical Aging,” Polymer Engineering and Science, v. 39, pp. 211-235.
Bradshaw, R. D. and L. C. Brinson (1999). “Mechanical Response of Linear Viscoelastic Composite Laminates Incorporating Nonisothermal Physical Aging Effects,” Composite Science and Technology, v. 59, pp. 1411–1427.
Bradshaw, R. D. and L. C. Brinson (1997). “Recovering Nonisothermal Physical Aging Shift Factors Via Continuous Test Data: Theory and Experimental Results,” ASME Journal of Engineering Materials and Technology, v. 119, pp. 233–241.
Bradshaw, R. D. and L. C. Brinson (1997). “A Sign Control Method for Fitting and Interconverting Material Functions for Linearly Viscoelastic Solids,” Mechanics of Time-Dependent Materials, v. 1, pp. 85-108.
Bradshaw, R. D. and L. C. Brinson (1997). “Physical Aging in Polymers and Polymer Composites: An Analysis and Method for Time-Aging Time Superposition,” Polymer Engineering and Science, v. 31, pp. 31-44.
Monaghan, M. R., L. C. Brinson and R. D. Bradshaw (1994). “Analysis of Variable Stress History on Polymeric Composite Materials with Physical Aging,” Composites Engineering, v. 4, pp. 1023–1032.
Pang, S.-S., A. Pandian and R. D. Bradshaw (1992). “Modified Tsai-Wu Failure Criterion for Fiber-Reinforced Composite Laminates,” Polymer Composites, v. 13, pp. 273–277.
Conference Papers and Presentations
Bradshaw, R. D. (1999). “Static and Fatigue Testing of
IM7/5260 Laminates with Titanium Foil and Chrome Sputtered Surface Diffusion
Barriers after Isothermal Aging,” Boeing Contractor Report for
Bradshaw, R. D. and S. S. Lee (1999). “Effects of
Moisture Ingression on the Strength of
Bradshaw, R. D. (1999). “Isothermal Aging And Testing Of
IM7/5260 Laminates,” Boeing Contractor Report for
Bradshaw, R. D. (1999). “Isothermal Aging And Testing Of
IM7/K3B Laminates,” Boeing Contractor Report for
Bradshaw, R. D. (1999). “Open Hole and Notched Shear
Testing Of Laminate And Ramped Panel Specimens,” Boeing Contractor Report for
Bradshaw, R. D. (1998). “Testing of Wing Risk Reduction
Panels: 48 Ply and 96 Ply Facesheets Over 1” Titanium Core,” Boeing Contractor
Report for
Bradshaw, R. D. (1993). “A Basis for Bonding Qualification Tests for ASME B31.3 Non‑Metallic Piping,” Codes and Standards in a Global Environment (ASME Pressure Vessel and Piping Division), PVP-v. 259, pp. 81-88.
Professional Organizations and Committees
Member of the American Society of Mechanical Engineers
Contact Roger Bradshaw
if problems or questions
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