Chapter 30. Dynamic Fracture Toughness of Ceramic Composites

  1. John B. Wachtman Jr.
  1. K. H. Yang,
  2. A. S. Kobayashi and
  3. A. F. Emery

Published Online: 28 MAR 2008

DOI: 10.1002/9780470310496.ch30

Proceedings of the 12th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 9, Issue 7/8

Proceedings of the 12th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 9, Issue 7/8

How to Cite

Yang, K. H., Kobayashi, A. S. and Emery, A. F. (1988) Dynamic Fracture Toughness of Ceramic Composites, in Proceedings of the 12th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 9, Issue 7/8 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470310496.ch30

Author Information

  1. University of Washington Department of Mechanical Engineering Seattle, WA 98195

Publication History

  1. Published Online: 28 MAR 2008
  2. Published Print: 1 JAN 1988

ISBN Information

Print ISBN: 9780470374801

Online ISBN: 9780470310496

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Keywords:

  • ceramic;
  • polymer;
  • clustering;
  • stringent;
  • microstructure

Summary

Impacted, single-edge notched, three-point bend specimens were used to determine the dynamic fracture toughness us crack velocity relations of TiB2-particulate/SiC-matrix and SiCw/Al2O3-matrix composites at room temperature and 1200°C. The bend bars were impacted at an estimated strain rate of 10 1/s and a hybrid experimental-numerical technique was used to deduce the dynamic stress intensity factors. Rapid crack initiation and propagation were monitored by a laser interferometer displacement gage system. The entire loading system together with the specimen was modeled by a dynamic finite element model which transmitted the measured outside impact load to the specimen inside of the furnace. Small differences between the dynamic responses of room temperature and 1200°C were observed.