Determining the toughness of ceramics from Vickers indentations using the crack-opening displacements: An experimental study

10/31/2002 7:26 A M LBNL-51689 DETERMINING THE TOUGHNESS OF CERAMICS FROM VICKERS INDENTATIONS USING THE CRACK-OPENING DISPLACEMENTS: AN EXPERIMENTAL STUDY J. J. Kruzic and R. O. Ritchie Materials Sciences Division, Lawrence Berkeley National Laboratory and Department of Materials Science and Engineering, University of California, Berkeley, C A 94720, U S A October, 2002 submitted to Journal of the American Ceramic Society Work supported by the Director, Office of Science, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering of the U.S. Department of Energy under Contract No. DE-AC03-76SF00098.