Journal article
Transient Moisture Effects in Fibers and Composite Materials
Journal of composite materials, Vol.24(9), pp.994-1009
09/1990
Handle:
https://hdl.handle.net/2376/116738
Abstract
Unlike constant moisture effects on the behavior of composite materials, transient moisture effects are not well studied and known. Armstrong and Kingston have shown that the creep of wood under transient humidity levels could be greatly accelerated over that at any constant moisture content. Later this phenomenon was termed "mechano- sorptive". In this paper, the authors show that aramid fibers (Kevlar® 29, Kevlar® 49, and Kevlar® 149) and Kevlar® 49/epoxy composites exhibit mechano-sorptive phenomenon. Kevlar® composites were studied using both creep and dynamic mechanical analysis while undergoing desorption. Creep of single Kevlar® fibers was studied during relative humid ity conditions cycled between 5 % and 95 %. The results observed with Kevlar are consis tent with those reported for other natural polymeric materials.
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Details
- Title
- Transient Moisture Effects in Fibers and Composite Materials
- Creators
- John Z Wang - Department of Engineering Science and Mechanics Virginia Polytechnic Institute and State University Blacksburg, VA 24061David A Dillard - Department of Engineering Science and Mechanics Virginia Polytechnic Institute and State University Blacksburg, VA 24061Michael P Wolcott - Department of Wood Science University of West Virginia P.O. Box 6125 Morgantown, WV 26506Frederick A Kamke - Brooks Forest Products Center Virginia Polytechnic Institute and State University Blacksburg, VA 24061Garth L Wilkes - Chemical Engineering Department Virginia Polytechnic Institute and State University Blacksburg, VA 24061
- Publication Details
- Journal of composite materials, Vol.24(9), pp.994-1009
- Academic Unit
- Office of Clean Technology
- Identifiers
- 99900548480901842
- Language
- English
- Resource Type
- Journal article