Chapter 25. Implications of Fiber Stress Rupture on Lifetimes of Ceramic Matrix Composites

  1. John B. Wachtman Jr.
  1. G. V. Srinivasan1 and
  2. W. A. Curtin2

Published Online: 28 MAR 2008

DOI: 10.1002/9780470314555.ch25

Proceedings of the 18th Annual Conference on Composites and Advanced Ceramic Materials - B: Ceramic Engineering and Science Proceedings, Volume 15, Issue 5

Proceedings of the 18th Annual Conference on Composites and Advanced Ceramic Materials - B: Ceramic Engineering and Science Proceedings, Volume 15, Issue 5

How to Cite

Srinivasan, G. V. and Curtin, W. A. (1994) Implications of Fiber Stress Rupture on Lifetimes of Ceramic Matrix Composites, in Proceedings of the 18th Annual Conference on Composites and Advanced Ceramic Materials - B: Ceramic Engineering and Science Proceedings, Volume 15, Issue 5 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470314555.ch25

Author Information

  1. 1

    The Carborundum Company, Niagara Falls, NY

  2. 2

    Departments of Engineering Science & Mechanics, and Materials Science & Engineering, Virginia Polytechnic Institute and State University, Blacksburgh, VA

Publication History

  1. Published Online: 28 MAR 2008
  2. Published Print: 1 JAN 1994

ISBN Information

Print ISBN: 9780470375334

Online ISBN: 9780470314555

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Keywords:

  • fiber stress rupture;
  • micromechanical mode;
  • single fiber rupture tests;
  • gas turbine engine components;
  • overall creep and fatigue behavior of the composite

Summary

A micromechanical model is presented to predict fiber life in ceramic matrix composites using lifetime parameters determined from single fiber rupture tests. The model predicts lifetimes of fiber to be several orders of magnitude longer than lifetime determined from single fiber tests. The load transfer mechanism and creep rupture modes of composite with its constituent properties are discussed. Preliminary experimental evidence on a SiC fiber reinforced composite is presented. The stress and lifetime of fibers in that composite has been estimated using model calculations.