Complete Crack-Tip Shielding of the Mode III Crack in a Work-Hardening Solid

[+] Author and Article Information
J. Weertman

Department of Materials Science and Engineering, Department of Geological Sciences, Northwestern University, Evanston, IL 60208

J. Appl. Mech 58(4), 1107-1108 (Dec 01, 1991) (2 pages) doi:10.1115/1.2897695 History: Received January 02, 1991; Revised January 18, 1991; Online March 31, 2008


The crack-tip shielding stress intensity factor L , for the mode III crack in a work-hardening solid is equal to L = - K , where K is the applied stress intensity factor. That is, the crack tip is perfectly shielded. This result is shown two ways: from the dislocation shielding and from the dislocation crack extension force.

Copyright © 1991 by The American Society of Mechanical Engineers
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