Abstract
How to quantitatively analyze the transition size and establish a total life model has always been a research topic. Crack transition size plays the role of the divider of crack initiation and propagation phases, and the total fatigue life is in the treatment of the summation of fatigue initiation and propagation periods. In this article, a unified model of combination of the corrected local stress (strain) method with the concept of fracture mechanics is applied to estimate the total fatigue life of a notched member and to validate the predictions proposed in this paper, which is compared with the experimental tests, and the results showed good consistency for the notched structure of a certain aluminum alloy.
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