Chapter 40. Fracture Toughness of Fiber-Reinforced Glass Ceramic and Ceramic Matrix Composites

  1. John B. Wachtman Jr
  1. Kevin R. Stull and
  2. A. Parvizi-Majidi

Published Online: 28 MAR 2008

DOI: 10.1002/9780470313831.ch40

Proceedings of the 15th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 12, Issue 7/8

Proceedings of the 15th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 12, Issue 7/8

How to Cite

Stull, K. R. and Parvizi-Majidi, A. (2008) Fracture Toughness of Fiber-Reinforced Glass Ceramic and Ceramic Matrix Composites, in Proceedings of the 15th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 12, Issue 7/8 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470313831.ch40

Author Information

  1. Center for Composite Materials Department of Mechanical Engineering and Material Science Program University of Delaware Newark, DE 19716

Publication History

  1. Published Online: 28 MAR 2008
  2. Published Print: 1 JAN 1991

ISBN Information

Print ISBN: 9780470375099

Online ISBN: 9780470313831

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Keywords:

  • perpendicular;
  • configuration;
  • component;
  • orthogonal;
  • microscope

Summary

A fracture mechanics investigation of 2D woven Nicalon© SiC/SiC Nicalon© SiC/LAS has been undertaken. An energy approach has been adopted to characterize and quantify the fracture properties of these materials. Chevronnotched bend specimens were tested in an edgewise configuration in which the crack propagated perpendicular to the ply direction. R-curves were obtained from repeated loading and unloading of specimens using several methods of data reduction. Values corresponding to the plateau regions of the R-curves were taken as steady state crack growth resistance. These ranged from 37 to 63 kJ/m2 for 2DSiC/LAS and 2.6 to 2.8 kJ/m2 for 2D-SiC/SiC composites.