Chapter 42. Application of Indentation-Strength Method to R-Curve Measurements
- John B. Wachtman Jr.
Published Online: 26 MAR 2008
Copyright © 1992 The American Ceramics Society
Proceedings of the 16th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 13, Issue 9/10
How to Cite
Nair, S. V., Cai, P. Z.-Q. and Ritter, J. E. (1994) Application of Indentation-Strength Method to R-Curve Measurements, in Proceedings of the 16th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 13, Issue 9/10 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470313978.ch42
- Published Online: 26 MAR 2008
- Published Print: 1 JAN 1994
Print ISBN: 9780470375198
Online ISBN: 9780470313978
- theoretical densities;
Technique for the measurement of toughness by the indentation-strength method, originally developed for materials that do not exhibit R-curve behavior, is extended in a general way to the measurement of the fracture resistance, Kr, for materials that exhibit a rising toughness with crack size. The R-curve was evaluated by this technique for alumina AD995 and a nanoporous RBSN reinforced with 38vol% of 15μm SiC particles. The magnitude of the fracture resistance, KR, determined by the indentation-strength method agreed with fracture resistance data obtained independently for the fully dense alumina ceramic.