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RESEARCH PAPERS

Stable Crack Growth in Ceramics at Ambient and Elevated Temperatures

[+] Author and Article Information
J. Y. Pastor, J. LLorca, J. Planas, M. Elices

Department of Materials Science, Polytechnic University of Madrid, 28040-Madrid, Spain

J. Eng. Mater. Technol 115(3), 281-285 (Jul 01, 1993) (5 pages) doi:10.1115/1.2904219 History: Received May 10, 1992; Revised December 09, 1992; Online April 29, 2008

Abstract

Quasi-static, stable crack propagation tests in ceramics are presented. The tests are performed using a recently developed technique in which the crack mouth opening displacement (CMOD) is continuously monitored during the test by means of a laser extensometer, and this signal is employed to control a servo-hydraulic testing machine. The advantages of such tests to characterize the fracture behavior of ceramics at high temperature are described, and the technique is used to study the fracture behavior of an ytria-partially stabilized zirconia ceramic at ambient and elevated temperatures.

Copyright © 1993 by The American Society of Mechanical Engineers
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