Chapter 2. Elevated Temperature Slow Crack Growth of Silicon Nitride Under Dynamic, Static and Cyclic Flexural Loading

  1. John B. Wachtman Jr.
  1. Sung R. Choi1,
  2. Jonathan A. Salem2,
  3. Noel Nemeth2 and
  4. John P. Gyekenyesi2

Published Online: 28 MAR 2008

DOI: 10.1002/9780470314555.ch2

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

Choi, S. R., Salem, J. A., Nemeth, N. and Gyekenyesi, J. P. (2008) Elevated Temperature Slow Crack Growth of Silicon Nitride Under Dynamic, Static and Cyclic Flexural Loading, 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.ch2

Author Information

  1. 1

    Cleveland State University, Cleveland, OH 44115

  2. 2

    NASA Lewis Research Center, Cleveland, OH 44135

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:

  • slow crack growth;
  • flexural results;
  • flexural fatigue susceptibility;
  • fatigue-associated failure;
  • cyclic fatigue behavior

Summary

The slow crack growth parameters of a hot-pressed silicon nitride were determined at 1200 and 1300°C in air by statically, dynamically and cyclicly loading bend specimens. The fatigue parameters were estimated using the recently developed CARES/Life computer code [1]. Good agreement exists between the flexural results. However, fatigue susceptibility under static uniaxial tensile loading, reported elsewhere [9,19], was greater than in flexure. Cyclic flexural loading resulted in the lowest apparent flexural fatigue susceptibility.