Chapter 35. Strength of Monolithic and Fiber-Reinforced Glass Ceramics at High Rates of Loading and Elevated Temperature
- 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
Lankford, J. (2008) Strength of Monolithic and Fiber-Reinforced Glass Ceramics at High Rates of Loading and Elevated Temperature, 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.ch35
- Published Online: 28 MAR 2008
- Published Print: 1 JAN 1988
Print ISBN: 9780470374801
Online ISBN: 9780470310496
Earlier work on compressive strength of glass-ceramic matrix Sic fiber-reinforced composites is extended to define their behavior at high strain rates. and to assess the role of matrix phase us fibers under such conditions. It is shown that the composite material can possess extremely high strain rate hardening exponents for strain rates in excess of about 400 s−1. These uniquely rapid increases in strength are found to depend upon composite microstructure and its orientation relative to the load axis; specifically, such strengthening correlates with at least one major set of fiber bundles being parallel to the load axis. The latter fail by kink initiation and propagation—highly rate-dependent, temperature-independent processes. For og-axis impulsive-load situations, the pyroceram matrix itself plays a significant role in controlling failure.