Roger Bradshaw

Assoc Professor

Attended Virginia Tech for BSc (1988). Worked for Ethyl Corporation in Baton Rouge, LA from 1988-1993 and received MSc from LSU in 1991. Received PhD from Northwestern University in 1997. Worked for The Boeing Company in Seattle from 1998 - 2001 and was adjunct lecturer at the University of Washington during that time. Joined University of Louisville as Assistant Professor in 2002; currently Associate Professor.

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

Publications

Load transfer and mechanical properties of chemically reduced graphene reinforcements in polymer composites- 2012

We report load transfer and mechanical properties of chemically derived single layer graphene (SLG) as reinforcements in poly (dimethyl) siloxane (PDMS) composites. Shear mixing reduced graphene sheets in polymers resulted in a marked decrease of the 2D band intensity due to doping and functionalization. Raman G mode shifts of 11.2 cm-1/% strain in compression and 4.2 cm-1/% strain in tension are reported. Increases in elastic modulus of PDMS by 42%, toughness by 39%, damping capability by 673%, and strain energy density of 43% by the addition of 1 wt% SLG in PDMS are reported. 2012 IOP Publishing Ltd.

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