RESEARCH PAPERS: Reliability, Stress Analysis, and Failure Prevention Papers

Electric Resistive Heat Curing of the Fiber-Matrix Interphase in Graphite/Epoxy Composites

[+] Author and Article Information
E. Sancaktar, Weijian Ma, S. W. Yurgartis

Department of Mechanical and Aeronautical Engineering, Clarkson University, Potsdam, NY 13699–5729

J. Mech. Des 115(1), 53-60 (Mar 01, 1993) (8 pages) doi:10.1115/1.2919324 History: Received February 01, 1992; Online June 02, 2008


A novel method for tailoring the interphase of carbon fiber-polymer composites by resistive electric heating is presented. The single fiber-epoxy resin tensile test is used to investigate the adhesion and fracture properties of the interphase. Electric resistive heating is shown to increase adhesion and toughness at the interphase region. In analyzing the results, the strength and fracture energy of the interphase are related to the thermal postcure conditions created by resistive electric heating. For this purpose, difference analysis method is used to obtain numerical solution for heat conduction problem in the single fiber test specimen and the temperature distributions are plotted. Improvements obtained using resistive electric heating via carbon fiber are compared with those obtained by postcuring of the whole sample via convective thermal postcuring. The results obtained using these two different postcure methods seem to be similar.

Copyright © 1993 by The American Society of Mechanical Engineers
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