Chapter 38. Scatter of Strength in Whisker-Reinforced Ceramics

  1. John B. Wachtman Jr.
  1. Y. Kagawa,
  2. M. Enoki and
  3. T. Kishi

Published Online: 28 MAR 2008

DOI: 10.1002/9780470310588.ch38

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

Kagawa, Y., Enoki, M. and Kishi, T. (1989) Scatter of Strength in Whisker-Reinforced Ceramics, 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.ch38

Author Information

  1. Research Center for Advanced Science and Technology University of Tokyo Tokyo, Japan

Publication History

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

ISBN Information

Print ISBN: 9780470374870

Online ISBN: 9780470310588

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Keywords:

  • activation energy;
  • ceramic oxide fibers;
  • sumitomo fibers;
  • metal matrix composites;
  • elastic modulus

Summary

Scatter of Strengh in SiC, Si3N4 whisker-reinforced glass and glass ceramics has been studied. The composites were bend-tested adn acoustic emission signals during the tests were monitored. Scatter of strength in these composites, which was treated by Weibull's form, was compared with that of monolithic matrix materials. The result showed that the addition of whisker reduced scatter of failure stress while scatter of crack initiation stress, measured by acoustic emission, increased by the addition of the whisker. In other words, with increasing non-linearity of the load-displacement behavior, scatter of strength in the composites decreased. The dependence of scatter of strength on the failure behavior of the whisker reinforced ceramics composites will be discussed.