Chapter 33. Influence of Crack Path on Crack Resistance of Brittle Matrix Composites

  1. Mrityunjay Singh and
  2. Todd Jessen
  1. S. Wa1,
  2. B.R. Patterson1,
  3. E.R. Fuller Jr.2 and
  4. M.K Ferber3

Published Online: 26 MAR 2008

DOI: 10.1002/9780470294680.ch33

25th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 22, Issue 3

25th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 22, Issue 3

How to Cite

Wa, S., Patterson, B.R., Fuller, E.R. and Ferber, M.K. (2008) Influence of Crack Path on Crack Resistance of Brittle Matrix Composites, in 25th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 22, Issue 3 (eds M. Singh and T. Jessen), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294680.ch33

Author Information

  1. 1

    University of Alabama at Birmingham Dept. of Materials & Mechanical Engineering Birmingham, AL 35294–4461

  2. 2

    Ceramic Division, NIST Gaithersberg, MD 20899–8521

  3. 3

    HTML, Oak Ridge National Laboratory Oak Ridge, TN 37831–6069

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 2001

ISBN Information

Print ISBN: 9780470375730

Online ISBN: 9780470294680

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Keywords:

  • microstructure;
  • composite;
  • magnitude;
  • ceramic;
  • environment

Summary

Studies on particulate reinforced ceramic composites, mainly glass\Al2O3, have shown pronounced crack path variations with variations in microstructure and loading rate. The variations in path strongly influenced the crack resistance of the composite. For composites where the particles have lower thermal expansion and higher Young's modulus than the matrix, greater crack-particle interactions lead to a decrease in crack resistance. Composites where the particles have higher thermal expansion and higher Young's modulus than the matrix showed increasing crack resistance with increasing crack- particle interaction. A theoretical model was developed to explain the results.