Chapter 18. Characterization of Mechanical Behavior and Fractographic Observations on Compglas SIC/LAS Composites

  1. William Smothers
  1. J. F. Jamet1,
  2. D. Lewis2 and
  3. E. Y. Luh3

Published Online: 26 MAR 2008

DOI: 10.1002/9780470320228.ch18

Proceedings of the 8th Annual Conference on Composites and Advanced Ceramic Materials: Ceramic Engineering and Science Proceedings, Volume 5, 7/8

Proceedings of the 8th Annual Conference on Composites and Advanced Ceramic Materials: Ceramic Engineering and Science Proceedings, Volume 5, 7/8

How to Cite

Jamet, J. F., Lewis, D. and Luh, E. Y. (1984) Characterization of Mechanical Behavior and Fractographic Observations on Compglas SIC/LAS Composites, in Proceedings of the 8th Annual Conference on Composites and Advanced Ceramic Materials: Ceramic Engineering and Science Proceedings, Volume 5, 7/8 (ed W. Smothers), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470320228.ch18

Author Information

  1. 1

    Office National D'Etudes et de Recherches Aerospatiales Paris, France

  2. 2

    Naval Research Laboratory Washington, B.C.

  3. 3

    University of California Berkeley, CA

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 1984

ISBN Information

Print ISBN: 9780470374139

Online ISBN: 9780470320228

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Keywords:

  • ceramic fiber-ceramic matrix composites;
  • fiber strain;
  • residual tension;
  • glass matrix composites;
  • heat treatments

Summary

Results are presented for unidirectional tensile tests on Compglas™ Nicalon™ SiC fiber/LAS matrix composites. These results, for tensile stress-strain behavior, are compared with previous results and with predictions for tensile behavior derived from the Aveston theory for brittle matrix fiber composites. The results suggest quite low values for the fiber-matrix interfacial shear strength and that the interfacial strength may be nearly optimum for strength and toughness. Observations are also presented based on fractographic measurements on fibers tested individually in tension, and on fibers fractured in situ in the composite. These measurements provide quantitative information on the strength distribution of the SiC fibers as present in the composite.