Chapter 32. Effect of Specimen Shape on Fracture Toughness and Effective Fracture Energy in SiC-SiC Composite

  1. John B. Wachtman Jr.
  1. Mineo Mizuno1,
  2. Yasuo Nagano1,
  3. Hatsuhiko Usami1 and
  4. Yutaka Kagawa2

Published Online: 28 MAR 2008

DOI: 10.1002/9780470314555.ch32

Proceedings of the 18th Annual Conference on Composites and Advanced Ceramic Materials - B: Ceramic Engineering and Science Proceedings, Volume 15, Issue 5

Proceedings of the 18th Annual Conference on Composites and Advanced Ceramic Materials - B: Ceramic Engineering and Science Proceedings, Volume 15, Issue 5

How to Cite

Mizuno, M., Nagano, Y., Usami, H. and Kagawa, Y. (1994) Effect of Specimen Shape on Fracture Toughness and Effective Fracture Energy in SiC-SiC Composite, in Proceedings of the 18th Annual Conference on Composites and Advanced Ceramic Materials - B: Ceramic Engineering and Science Proceedings, Volume 15, Issue 5 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470314555.ch32

Author Information

  1. 1

    Japan Fine Ceramics Center, 2–4-1 Mutsuno, Atsuta, Nagoya, 456 Japan Takuji Ito Petroleum Energy Center, 2–3-22 Azabudai, Minato, Tokyo, 105 Japan

  2. 2

    University of Tokyo, 7–22–1 Ropponngi, Minato, Tokyo, 106 Japan

Publication History

  1. Published Online: 28 MAR 2008
  2. Published Print: 1 JAN 1994

ISBN Information

Print ISBN: 9780470375334

Online ISBN: 9780470314555

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Keywords:

  • fracture toughness;
  • effective fracture energy;
  • tensile testing;
  • single-edge-notched;
  • ceramic gas turbine engines

Summary

Fracture toughness and effective fracture energy of 2-D woven fabric type SiC fiber-reinforced SiC matrix composite have been studied. Mechanical properties were obtained by tensile testing of single-edge-notched (SEN) specimen. Effects of notch depth to width ratio and fiber bundle direction on the properties were examined using the SEN specimen. The result showed significant effect of the ratio on the measured values. The fracture toughness tended to increase with increasing the notch depth, while the effective fracture energy was almost the same in the range of the ratio from 0.3 to 0.6.