Crack-Extension Force for a Part-Through Crack in a Plate

[+] Author and Article Information
G. R. Irwin

Mechanics Division, U. S. Naval Research Laboratory, Washington, D. C.

J. Appl. Mech 29(4), 651-654 (Dec 01, 1962) (4 pages) doi:10.1115/1.3640649 History: Received June 16, 1961; Online September 16, 2011


The crack stress-field parameter K and crack-extension force G at boundary points of a flat elliptical crack may be derived from knowledge that normal tension produces an ellipsoidal crack opening. Rough correction procedures can be employed to adapt this result for application to a part-through crack in a plate subjected to tension. Experimental measurements suggest this adapted result has a useful range of accuracy.

Copyright © 1962 by ASME
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