Chapter 17. Slow Crack Growth in Metal-Reinforced Glass Composites

  1. William Smothers
  1. J. J. Mecholsky1,
  2. T. L. Jessen1 and
  3. R. H. Moore2

Published Online: 26 MAR 2008

DOI: 10.1002/9780470320280.ch17

Proceedings of the 9th Annual Conference on Composites and Advanced Ceramic Materials: Ceramic Engineering and Science Proceedings, Volume 6, Issue 7/8

Proceedings of the 9th Annual Conference on Composites and Advanced Ceramic Materials: Ceramic Engineering and Science Proceedings, Volume 6, Issue 7/8

How to Cite

Mecholsky, J. J., Jessen, T. L. and Moore, R. H. (1985) Slow Crack Growth in Metal-Reinforced Glass Composites, in Proceedings of the 9th Annual Conference on Composites and Advanced Ceramic Materials: Ceramic Engineering and Science Proceedings, Volume 6, Issue 7/8 (ed W. Smothers), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470320280.ch17

Author Information

  1. 1

    Pennsylvania State Univ. University Park, PA 16802

  2. 2

    Sandia National Laboratories Albuquerque, NM 87185

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 1985

ISBN Information

Print ISBN: 9780470374337

Online ISBN: 9780470320280

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Keywords:

  • crack velocity;
  • stress intensity;
  • glass matrix;
  • stress corrosion susceptiblity;
  • kovar-sealing glass.

Summary

We measured crack velocity as a function of stress intensify using the applied moment double-cantilever beam technique for Kovar metal sphere-reinforced borosili-cate glass matrix composites. The slow crack growth measured in the metal-reinforced glass composites demonstrated that the reinforcement impedes the crack front so that higher stress intensify is required for higher volume-fraction reinforcement to achieve the same crack velocity. The stress corrosion susceptiblify, n, was approximately the same for the glass, and for the composites. Fractograph-ic evidence showed crack front interaction with the Kovar particles. The difference in behavior with small and large cracks is discussed.