Analysis of the Failure of Ceramics Due to Subcritical Crack Growth

[+] Author and Article Information
François Hild, Didier Marquis

Laboratoire de Mécanique et Technologie, E.N.S. Cachan/C.N.R.S./Université Paris 6, 61, avenue du Président Wilson, F-94235 Cachan Cedex, France

Olivier Kadouch

Commissariat à l’Energie Atomique, Centre d’Eludes de Vaujours-Moronvilliers, B.P. No 7, F-77181 Courtry, France

Jean-Pierre Lambelin

Commissariat à l’Energie Atomique, Centre d’Etudes du C.E.S.T.A., B.P, No 2, F-33114 Le Barp, France

J. Eng. Mater. Technol 118(3), 343-348 (Jul 01, 1996) (6 pages) doi:10.1115/1.2806816 History: Received March 18, 1995; Revised January 17, 1996; Online November 27, 2007


Failure conditions are assessed when ceramics exhibit Subcritical Crack Growth from preexisting flaws. In the framework of the weakest link theory and independent events hypothesis, a reliability analysis is carried out by modeling flaw distributions and crack growth laws. Experimental data obtained on a spinel Mn Zn ferrite subjected to five different load rates are analyzed by using an expression for the failure probability accounting for Subcritical Crack Growth.

Copyright © 1996 by The American Society of Mechanical Engineers
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