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RESEARCH PAPERS

Effects of Sub-Freezing Temperatures on Graphite/Epoxy Composite Materials

[+] Author and Article Information
T. K. Tsotsis

CIBA-GEIGY Composite Materials, Anaheim, CA 92807

J. Eng. Mater. Technol 111(4), 438-439 (Oct 01, 1989) (2 pages) doi:10.1115/1.3226492 History: Received December 22, 1988; Revised April 04, 1989; Online September 15, 2009

Abstract

Moisture in composite materials has been the subject of considerable interest in the past decade. Many studies have shown that moisture directly causes damage in graphite/epoxy composite materials. With the increasing use of such composites in various environments, an assessment of the effects of sub-freezing and/or cryogenic temperatures on composites containing moisture is needed. This article presents a summary of these effects and demonstrates that reductions in strength at low temperatures are not due to the formation of ice crystals, but instead are due to changes in the residual stresses caused by absorbed moisture.

Copyright © 1989 by ASME
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