Chapter 62. Influence of Holes on the In-Plane Tensile Strength and Fatigue Durability of a Nicalon™/SI-N-C Ceramic Matrix Composite

  1. Waltraud M. Kriven and
  2. Hua-Tay Lin
  1. Sreeramesh Kalluri1 and
  2. Michael J. Verrilli2

Published Online: 26 MAR 2008

DOI: 10.1002/9780470294826.ch62

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

Kalluri, S. and Verrilli, M. J. (2008) Influence of Holes on the In-Plane Tensile Strength and Fatigue Durability of a Nicalon™/SI-N-C Ceramic Matrix Composite, 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.ch62

Author Information

  1. 1

    Ohio Aerospace Institute, NASA Glenn Research Center, 21000 Brookpark Road, M/S 49-7 Brook Park, Ohio 44135

  2. 2

    NASA Glenn Research Center, 21000 Brookpark Road, M/S 106-5 Brook Park, Ohio 44135

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:

  • different percentages;
  • fatigue durability;
  • mechanical testing;
  • empirical equations;
  • nicalon

Summary

Effects of different sizes of holes as well as different percentages of open areas on the in-plane tensile strength and fatigue durability of the SiC/Si-N-C composite were investigated in this study. Test specimens with no holes, four different diameters of holes (1.0 to 3.2 mm), and four different open areas (20 to 35%) were machined. All mechanical testing was performed in air at a temperature of 910 °C. Fatigue tests were conducted with a load ratio, R = 0.05, and a frequency of 0.33 Hz. In general, both the in-plane tensile strength of the composite and its fatigue durability decreased with an increase in the size of the hole and percentage of the open area. Reductions in the in-plane tensile strength and cyclic fatigue life of the composite were described by empirical equations with the diameter of the hole and the percent open area as the independent variables. The applicability of these two empirical equations was evaluated with additional tensile and fatigue test data generated on the composite specimens.