Both specimens have the characteristic that free edge debonding is avoided, so that valid interface strength data can be obtained from the knee in the stress-strain curve. The method of analysis is described. Two examples of interface separation are cited in the as-fabricated composite, to show the application and validation of the test results. In one instance, tensile interface separation has been observed next to existing voids, and in the other instance, interface separation has occurred near radial matrix cracks.
Analyses show that the debonds are consistent with the low normal strength of the interface.
Nonsubscribers to the Journal of the American Ceramic Society may purchase single paper copies of articles, to be faxed or mailed, from our Ceramic Information Center . The American Ceramic Society. All rights reserved.