22. Mechanical Characterization of Unidirectional Carbon/Carbon (C/C) Composites for Engine Valve Application

  1. John B. Wachtman Jr.
  1. A. V. Kerkar,
  2. E. D. Kragness and
  3. R. W. Rice

Published Online: 26 MAR 2008

DOI: 10.1002/9780470313978.ch22

Proceedings of the 16th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 13, Issue 9/10

Proceedings of the 16th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 13, Issue 9/10

How to Cite

Kerkar, A. V., Kragness, E. D. and Rice, R. W. (1994) Mechanical Characterization of Unidirectional Carbon/Carbon (C/C) Composites for Engine Valve Application, in Proceedings of the 16th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 13, Issue 9/10 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470313978.ch22

Author Information

  1. W. R. Grace & Co. 7379 Route 32 Columbia, MD 21044

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 1994

ISBN Information

Print ISBN: 9780470375198

Online ISBN: 9780470313978

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Keywords:

  • decomposes;
  • microelectrophoresis;
  • mechanical properties;
  • coefficients;
  • thermal expansion

Summary

Development of a carbon/carbon (C/C) composite system for engine valve application is reviewed, focusing on mechanical characterization at room temperature. Young's Modulus of 20 × 106 psi (137 GPa), ultimate flexure strength of 40 × 103 psi (290 MPa) were measured for unidirectional C/C composites. Cyclic (tension-tension) fatigue tests to 20,000 psi (140 MPa) at 20–40 Hz of such samples showed promising results. Preliminary mechanical tests on as-fabricated valve prototypes were also performed.