Abstract
A slice synthesis methodology is developed and used to construct a modified strip-yield model for the semi-elliptical surface flaw, enabling prediction of plasticity-induced closure along the crack front and subsequent fatigue crack growth. A mathematical description of the model is presented. Slice synthesis methodologies have previously been limited to stress intensity factor and elastic crack displacement computation. Predictions of flaw shape evolution under cyclic loading are compared with experimental data for aluminum specimens under uniform constant amplitude loading. Model predictions are shown to correlate well with experimental data.
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