Chapter 40. The Effect of Non-Uniform Fiber Distribution on the Properties of a Unidirectional CFCMC: Mechanical & Physical Properties

  1. John B. Wachtman Jr
  1. Todd L. Jessen,
  2. Victor A. Greenhut,
  3. John J. Friel and
  4. David Lewis III

Published Online: 26 MAR 2008

DOI: 10.1002/9780470314715.ch40

Proceedings of the 19th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures - A: Ceramic Engineering and Science Proceedings, Volume 16, Issue 4

Proceedings of the 19th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures - A: Ceramic Engineering and Science Proceedings, Volume 16, Issue 4

How to Cite

Jessen, T. L., Greenhut, V. A., Friel, J. J. and Lewis, D. (1995) The Effect of Non-Uniform Fiber Distribution on the Properties of a Unidirectional CFCMC: Mechanical & Physical Properties, in Proceedings of the 19th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures - A: Ceramic Engineering and Science Proceedings, Volume 16, Issue 4 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470314715.ch40

Author Information

  1. U.S. Naval Research Laboratory, Washington, D.C. 20375-5343

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 1995

ISBN Information

Print ISBN: 9780470375372

Online ISBN: 9780470314715

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Keywords:

  • ceramic;
  • uniaxially-aligned;
  • enhanced;
  • homogeneity;
  • monofilaments

Summary

More than 130 ceramic fiber, ceramic matrix composite (CFCMC) flexure specimens were prepared. These CFCMCs contained 50 volume percent of either BN-coated or uncoated SiC fibers uniaxially-aligned in a zirconium titanate matrix. Bend test specimens were machined from the billets with fibers parallel to the long axis of the bend bar. Secondary bend bar orientations normal (N) and parallel (P) to the lay-up/processing directions were produced. No differences in mechanical properties were observed in the uncoated fiber composites. Significant differences as a function of secondary-specimen orientation were found in the mechanical properties of the BN-coated specimens. The differences in mechanical properties were correlated with differences observed in the fiber/matrix distribution within cross-sections of a composite type.