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RESEARCH PAPERS

A Continuum Theory of Crack Shielding in Ceramics

[+] Author and Article Information
M. Ortiz

Division of Engineering, Brown University, Providence, RI 02912

J. Appl. Mech 54(1), 54-58 (Mar 01, 1987) (5 pages) doi:10.1115/1.3172994 History: Received February 12, 1986; Revised May 22, 1986; Online July 21, 2009

Abstract

A phenomenological constitutive model is proposed which aims at describing the overall effect of microfracture in ceramics. Based on this model, the asymptotic stress, strain, and displacement fields at the tip of a stationary macroscopic crack are determined in closed form. The near-tip stress-intensity factor is computed and observed to be significantly smaller than the applied stress-intensity factor even for moderate amounts of damage.

Copyright © 1987 by ASME
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