Chapter 81. The Monotonic and Fatigue Behavior of a Nicalon™/Alumina Composite at Ambient and Elevated Temperatures

  1. J. P. Singh
  1. N. Miriyala1,
  2. P. K. Liaw1,
  3. C. J. Mchargue1,
  4. L. L. Snead2 and
  5. J. A. Morrison3

Published Online: 26 MAR 2008

DOI: 10.1002/9780470294437.ch81

Proceedings of the 21st Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 18, Issue 3

Proceedings of the 21st Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 18, Issue 3

How to Cite

Miriyala, N., Liaw, P. K., Mchargue, C. J., Snead, L. L. and Morrison, J. A. (2008) The Monotonic and Fatigue Behavior of a Nicalon™/Alumina Composite at Ambient and Elevated Temperatures, in Proceedings of the 21st Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 18, Issue 3 (ed J. P. Singh), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294437.ch81

Author Information

  1. 1

    The University of Tennessee Knoxville, TN 37996

  2. 2

    Oak Ridge National Laboratory Oak Ridge, TN 37831

  3. 3

    Westinghouse Electric Corporation Orlando, FL 32826

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 1997

ISBN Information

Print ISBN: 9780470375495

Online ISBN: 9780470294437

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Keywords:

  • fabric orientation;
  • mechanical behavior;
  • ambient temperature;
  • room-temperature behavior;
  • oriented specimens

Summary

The effects of fabric orientation on the mechanical behavior of a Nicalon™/Alumina composite were investigated. Flexure specimens were subjected to monotonic and cyclicfatigue loadings, at ambient temperature in air, and at 1000 °C in argon atmosphere, with loading either parallel or normal to the fabric plies. The flexural strengths at the ambient and elevated temperatures were comparable. However, there was a significant degradation in the fatigue performance of the composite at 1000 °C compared to the room-temperature behavior, owing to creep in the material and degradation in the fiber strength. The edge-on specimens failed by breakage of the 0° fibers. In contrast, failure in the transversely oriented specimens occurred by interlaminar cracking, followed by specimen collapse.