Chapter 39. New Technique for Measuring Debond Strength and Interfacial Fractional Shear Resistance in Fiber-Reinforced Ceramic Matrix Composites

  1. John B. Wachtman Jr.
  1. D. G. Brandon and
  2. E. R. Fuller Jr.

Published Online: 26 MAR 2008

DOI: 10.1002/9780470310557.ch39

A Collection of Papers Presented at the 13th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 10, Issue 7/8

A Collection of Papers Presented at the 13th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 10, Issue 7/8

How to Cite

Brandon, D. G. and Fuller, E. R. (1989) New Technique for Measuring Debond Strength and Interfacial Fractional Shear Resistance in Fiber-Reinforced Ceramic Matrix Composites, in A Collection of Papers Presented at the 13th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 10, Issue 7/8 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470310557.ch39

Author Information

  1. National Institute of Standards and Technology Gaithersburg, MD 20899

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 1989

ISBN Information

Print ISBN: 9780470374863

Online ISBN: 9780470310557

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Keywords:

  • chemical vapor deposition;
  • fiber-reinforced ceramic composites;
  • chemical vapor infiltration;
  • high fracture toughness;
  • carbon-carbon composites

Summary

The strength and fracture resistance of fiber-reinforced ceramic matrix composites depend sensitively on the fiber/matrix bonding. Previous measures of debond strength and interfacial shear resistance have been restricted to “pull-out” or “push-in” of individual fibers. A new technique has been devised to measure these properties. A polished disc of a composite, cut perpendicular to the reinforcing fibers, is subjected to uniform compression via a ductile metal plate, which is indented by the fibers. On releasing the load, the interfacial friction leaves the fibers protruding from the surface of the composite. The depth of the indentations in the metal plate and the residual fiber protrusions are measured and can be analyzed to yield the strain energy release rate for mode II interfacial debonding, as well as the interfacial frictional shear resistance.