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RESEARCH PAPERS

Crack Arrest Modes of a Transverse Crack Going Through a Longitudinal Crack or a Hole

[+] Author and Article Information
P. S. Theocaris, J. Milios

Department of Theoretical and Applied Mechanics, The National Technical University of Athens, Zographou, Athens 624, Greece

J. Eng. Mater. Technol 103(2), 177-182 (Apr 01, 1981) (6 pages) doi:10.1115/1.3224991 History: Received December 01, 1980; Online September 15, 2009

Abstract

The process of a transverse crack intersecting a longitudinal central crack, a longitudinal eccentric crack, or a central hole was investigated by means of high-speed photography and caustics. The results show that the crack momentarily arrests when arriving at the discontinuity, then reinitiates later, usually with a different velocity. Although the geometrical characteristics of the discontinuities had an effect, all crack arrest processes show fundamental similarities, since they are all related to the destruction and reconstruction of the singular stress field of the moving crack at the discontinuity. These results are in accordance with previous work of the authors for crack arrest at the interface of biphase plates.

Copyright © 1981 by ASME
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