Prediction of Low-Cycle Fatigue Life of Specimens With Fabrication Flaws

[+] Author and Article Information
A. G. Pickett

Southwest Research Institute, San Antonio, Texas

J. Eng. Ind 90(4), 620-626 (Nov 01, 1968) (7 pages) doi:10.1115/1.3604698 History: Received June 12, 1968; Online August 25, 2011


A modification of the notch stress procedure for fatigue-life analysis is presented. The importance of considering the mechanics of the specimen and the effects of the notch on specimen mechanics is illustrated by example. The procedure is applied to correlate the results of small specimen tests with large weld defect specimen tests. The significance of crack-initiation life and crack-propagation life and the dependence of these portions of total fatigue life on specimen geometry and loading is developed.

Copyright © 1968 by ASME
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