Chapter 16. Non-Steady State Cracking in Ceramic Matrix Composites

  1. John B. Wachtman Jr.
  1. L. R. Dharani and
  2. L. Chai

Published Online: 28 MAR 2008

DOI: 10.1002/9780470310588.ch16

A Collection of Papers Presented at the 13th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 10, Issue 9/10

A Collection of Papers Presented at the 13th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 10, Issue 9/10

How to Cite

Dharani, L. R. and Chai, L. (2008) Non-Steady State Cracking in Ceramic Matrix Composites, in A Collection of Papers Presented at the 13th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 10, Issue 9/10 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470310588.ch16

Author Information

  1. Department of Mechanical and Aerospace Engineering and Engineering Mechanics University of Missouri-Rolla Rolla, MO

Publication History

  1. Published Online: 28 MAR 2008
  2. Published Print: 1 JAN 1989

ISBN Information

Print ISBN: 9780470374870

Online ISBN: 9780470310588

SEARCH

Keywords:

  • monolithic ceramics;
  • multiple cracking;
  • interfacial properties;
  • deformation capacity;
  • design of composites

Summary

A micromechanics analytical model based on the consistent shear lag theory is developed for predicting the failure modes in a fiber-reinforced unidirectional ceramic matrix composite. The model accounts for the relatively large matrix stiffness. The fiber and matrix stresses are established as functions of the applied stress, crack geometry, and most importantly, the microstructural properties of the constituents. From the predicted stress, the mode of failure is established based on the point stress criterion. The role of the microstructural properties on the failure mode and ultimate strength is assessed.