Chapter 30. Dynamic Fracture Toughness of Ceramic Composites
- John B. Wachtman Jr.
Published Online: 28 MAR 2008
Copyright © 1988 The American Ceramic Society, Inc.
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
- Published Online: 28 MAR 2008
- Published Print: 1 JAN 1988
Print ISBN: 9780470374801
Online ISBN: 9780470310496
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.