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RESEARCH PAPERS: Gas Turbines: Vehicular

Fiber Fracture in Continuous Fiber Ceramic Composites: Concepts and Observations

[+] Author and Article Information
K. Reifsnider, K. Liao, M. McCormick, A. Tiwari

Materials Response Group, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061

J. Eng. Gas Turbines Power 119(1), 205-211 (Jan 01, 1997) (7 pages) doi:10.1115/1.2815550 History: Received February 08, 1995; Online November 19, 2007

Abstract

The knowledge of fiber behavior in CMCs is rather modest, and models tend to be based on concepts that are less than complete. The present paper addresses several aspects of this problem. Fundamental assumptions for tensile strength models are discussed, and some basic modeling approaches are described. The effects of fiber fracture on the quasi-static stress–strain behavior are described (from physical measurements), and some models of that behavior discussed. Finally, a summary of the “state of affairs” for this subject will be attempted, and the needs for further investigation, especially to support improved modeling, will be presented.

Copyright © 1997 by The American Society of Mechanical Engineers
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