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RESEARCH PAPERS: Special Issue on Time-Dependent Behaviors of Polymer Matrix Composites and Polymers

Steam Pressure Generated in a Spherical Cavity in a Moisture Saturated Polymer Matrix Composite during Rapid Heating

[+] Author and Article Information
Vijayanand Muralidharan

Department of Theoretical and Applied Mechanics, Cornell University, Ithaca, NY 14853vm45@cornell.edu

Chung-Yuen Hui

Department of Theoretical and Applied Mechanics, Cornell University, Ithaca, NY 14853ch45@cornell.edu

J. Eng. Mater. Technol 128(1), 50-54 (Mar 06, 2005) (5 pages) doi:10.1115/1.1925287 History: Received August 31, 2004; Revised March 06, 2005

The time history of steam pressure inside an isolated spherical micro-cavity in a polymer matrix composite is studied by assuming that the chemical potential of water is continuous across the cavity–polymer interface. Steam pressure inside the cavity is due to heating of moisture-saturated composites from its initial temperature to a final temperature. Exact closed form solutions are obtained for the steam pressure developed under infinitely fast heating in an infinite plate. The effect of cavity shape on the induced steam pressure is studied by comparing this solution with a previous result on cracklike cavities.

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Copyright © 2006 by American Society of Mechanical Engineers
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Figures

Grahic Jump Location
Figure 1

Evolution of cavity steam pressure against real time for a cracklike cavity and spherical cavity

Grahic Jump Location
Figure 2

Comparison of normalized cavity steam pressure induced in spherical and cracklike cavities as a function of normalized time

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