Chapter 68. Evaluation of Thermal Shock Damage in 2-D Woven Nicalon™ -Al2O3 Composite by NDE Techniques

  1. Don Bray
  1. Yu-Lin Wang1,
  2. James E. Webb1,
  3. Raj N. Singh1,
  4. Jiangang Sun2 and
  5. W. A. Ellingson2

Published Online: 26 MAR 2008

DOI: 10.1002/9780470294482.ch68

22nd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 19, Issue 3

22nd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 19, Issue 3

How to Cite

Wang, Y.-L., Webb, J. E., Singh, R. N., Sun, J. and Ellingson, W. A. (1988) Evaluation of Thermal Shock Damage in 2-D Woven Nicalon™ -Al2O3 Composite by NDE Techniques, in 22nd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 19, Issue 3 (ed D. Bray), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294482.ch68

Author Information

  1. 1

    Department of Materials Science and Engineering, University of Cincinnati, OH 45221

  2. 2

    Argonne National Laboratory, Argonne, IL 60439

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 1988

ISBN Information

Print ISBN: 9780470375587

Online ISBN: 9780470294482

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Keywords:

  • thermal;
  • evaluation;
  • microscopy;
  • temperature;
  • parameters

Summary

The thermal shock resistance of a 2-D woven Nicalon™ fiber reinforced Al2O3 composite (Lanxide, DuPont) was studied using a water quench technique with the temperature difference varying from 300 to 1000°C. Flexure tests, optical microscopy, and non-destructive evaluation (NDE) techniques, including dynamic mechanical resonance (DMR) and thermal diffusivity measurements, were used to characterize thermal shock damage. The results of the retained modulus showed a maximum degradation of about 20% at quench temperature difference, ΔT, larger than 500°C. The strength degradation, however, appeared at ΔT>800°C which was correlated with the data on thermal diffusivity and microstructure observation.