Chapter 58. Evaluation of Transthickness Tensile Strength of SiC/SiC Composites

  1. Waltraud M. Kriven and
  2. Hua-Tay Lin
  1. T. Hinoki,
  2. E. Lara-Curzio and
  3. L. L. Snead

Published Online: 26 MAR 2008

DOI: 10.1002/9780470294826.ch58

27th Annual Cocoa Beach Conference on Advanced Ceramics and Composites: B: Ceramic Engineering and Science Proceedings, Volume 24, Issue 4

27th Annual Cocoa Beach Conference on Advanced Ceramics and Composites: B: Ceramic Engineering and Science Proceedings, Volume 24, Issue 4

How to Cite

Hinoki, T., Lara-Curzio, E. and Snead, L. L. (2003) Evaluation of Transthickness Tensile Strength of SiC/SiC Composites, in 27th Annual Cocoa Beach Conference on Advanced Ceramics and Composites: B: Ceramic Engineering and Science Proceedings, Volume 24, Issue 4 (eds W. M. Kriven and H.-T. Lin), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294826.ch58

Author Information

  1. Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 2003

ISBN Information

Print ISBN: 9780470375846

Online ISBN: 9780470294826

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Keywords:

  • transthickness tensile strength;
  • diametral compression;
  • magnitude;
  • fractographic;
  • specimen dimensions investigated

Summary

The transthickness tensile strength (TTS) of 2-D CVI-SiC/SiC composites reinforced with Tyranno SA fibers was evaluated by the diametral compression test. The effect of specimen size and specimen shape on the magnitude of the TTS were studied and the results were analyzed using Weibull statistics.

Specimens failed along an interlaminar plane adjacent to the line of action of the applied load and fractographic analyses revealed that the crack had propagated through matrix pores and along interfaces between the fiber, fiber coating and matrix. The magnitude of the TTS was found to be independent of specimen size or shape for the range of specimen dimensions investigated, although the amount of scatter was largest for the results obtained from the evaluation of the smallest specimens. The characteristic value of the TTS and the Weibull modulus for the distribution of TTS values were 24.9 MPa and 6.48, respectively.