Chapter 27. Shear Strength and Non-Destructive Evaluation of Thermally Shocked CFCC's

  1. J. P. Singh
  1. James E. Webb1,
  2. Raj N. Singh1,
  3. Peter B. Nagy2 and
  4. Richard A. Lowden3

Published Online: 26 MAR 2008

DOI: 10.1002/9780470294444.ch27

Proceedings of the 21st Annual Conference on Composites, Advanced Ceramics, Materials, and Structures - B: Ceramic Engineering and Science Proceedings, Volume 18, Issue 4

Proceedings of the 21st Annual Conference on Composites, Advanced Ceramics, Materials, and Structures - B: Ceramic Engineering and Science Proceedings, Volume 18, Issue 4

How to Cite

Webb, J. E., Singh, R. N., Nagy, P. B. and Lowden, R. A. (2008) Shear Strength and Non-Destructive Evaluation of Thermally Shocked CFCC's, in Proceedings of the 21st Annual Conference on Composites, Advanced Ceramics, Materials, and Structures - B: Ceramic Engineering and Science Proceedings, Volume 18, Issue 4 (ed J. P. Singh), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294444.ch27

Author Information

  1. 1

    Department of Materials Science and Engineering, Mechanics University of Cincinnati Cincinnati, OH 45221–0012

  2. 2

    Department of Aerospace Engineering and Engineering, Mechanics University of Cincinnati Cincinnati, OH 45221–0012

  3. 3

    Oak Ridge National Laboratory Oak Ridge, TN 37831

Publication History

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

ISBN Information

Print ISBN: 9780470375532

Online ISBN: 9780470294444

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Keywords:

  • demonstrated;
  • microcracking;
  • orientation;
  • spectroscopy;
  • compression

Summary

The effects of thermal shock on two 2-D woven continuous fiber ceramic composites (CFCC's) were studied by double notch shear compression tests and ultrasonic imaging. Thermal shock was generated by a water quench technique using ΔT's from 400 to 1000°C. Shear strengths along planes parallel to the fiber cloths were almost an order of magnitude lower than those along the orthogonal direction. Quenching did not affect the shear strength along orthogonal planes and only slightly decreased strengths along the parallel planes. Ultrasound images were obtained using a water-coupled c-scan system. A comparison of the post-quench images with the pre-quench images showed that the thermal shock resulted in a loss of image detail but did not consistently affect the ultrasound intensity.