Chapter 38. Fatigue Crack Growth Behavior in SiC Fiber Reinforced Zircon Composites

  1. Don Bray
  1. Yu-Lin Wang,
  2. Umashankar Anandakumar and
  3. Raj N. Singh

Published Online: 26 MAR 2008

DOI: 10.1002/9780470294482.ch38

22nd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 19, Issue 3

22nd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 19, Issue 3

How to Cite

Wang, Y.-L., Anandakumar, U. and Singh, R. N. (1988) Fatigue Crack Growth Behavior in SiC Fiber Reinforced Zircon Composites, in 22nd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 19, Issue 3 (ed D. Bray), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294482.ch38

Author Information

  1. Department of Materials Science and Engineering, University of Cincinnati, OH 45221-0012

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 1988

ISBN Information

Print ISBN: 9780470375587

Online ISBN: 9780470294482

SEARCH

Keywords:

  • mechanism;
  • composite;
  • propagation;
  • zircon;
  • hydraulic

Summary

Fatigue crack growth of silicon carbide fiber reinforced zircon composites was determined numerically and experimentally. The numerical model assumed that the fatigue crack growth occurred due to cyclic degradation of the interfacial shear stress so that the effect of crack wake bridging decreased and crack propagated. The applied stress intensity factor (K) - crack velocity (V) relationship was numerically obtained by two approaches. The first was to determine a critical interfacial stress at which fatigue crack grew and the second applied a presumed function involving degradation of the interfacial stress with the number of cycles. Fatigue crack growth was measured at room temperature using an optical telescope to observe the in situ crack length during the fatigue testing. It was shown that the crack velocity decreased with increased number of cycles, which was consistent with the theoretical results.