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RESEARCH PAPERS

Matrix Crack Extension at a Frictionally Constrained Fiber

[+] Author and Article Information
A. P. S. Selvadurai

Department of Civil Engineering and Applied Mechanics, McGill University, Montreal, Qc., Canada, H3A 2K6

J. Eng. Mater. Technol 116(3), 398-402 (Jul 01, 1994) (5 pages) doi:10.1115/1.2904304 History: Received July 17, 1993; Online April 29, 2008

Abstract

The paper presents the application of a boundary element scheme to the study of the behavior of a penny-shaped matrix crack which occurs at an isolated fiber which is frictionally constrained. An incremental technique is used to examine the progression of self similar extension of the matrix crack due to the axial straining of the composite region. The extension of the crack occurs at the attainment of the critical stress intensity factor in the crack opening mode. Iterative techniques are used to determine the extent to crack enlargement and the occurrence of slip and locked regions in the factional fiber-matrix interface. The studies illustrate the role of fiber-matrix interface friction on the development of stable cracks in such frictionally constrained zones. The methodologies are applied to typical isolated fiber configurations of interest to fragmentation tests.

Copyright © 1994 by The American Society of Mechanical Engineers
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