Abstract
AbstractThe effective stress model of the fatigue life prediction for notched components based on smooth specimens is presented. The model used surface area elements in the high‐stress region surrounding the root of a notch. The weakest link theory incorporating the stress field intensity model was used in this approach. The effects of stress gradient and component size were considered. A constant amplitude rotating bending fatigue experiment was performed at room temperature at stress ratio R = −1 for smooth and notched specimens of the ultrahigh‐strength steel TM210A. The proposed prediction method was checked against the experimental results of the TM210A notched specimens. Prediction results of 50% survival rate were all within a factor of 2 scatter band of the experimental results.
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