Effective stress and fatigue life prediction with mean stress correction models on a ferritic stainless steel sheet

Abstract

The deformation behavior and fatigue strengths under plane bending loads were investigated using standard sheet specimens, and the effective stress model was proposed. When the experimental data were fitted to the proposed and Walker model, the relationship between the fully-reversed equivalent stress amplitude and failure cycles was according to the regression line of the linear-logarithmic formula, and the coefficient of determination was 0.9707. The failure cycles by the observation were in good agreement with those by the prediction using the proposed model. The Goodman and other conventional relations had insufficient goodness of fit.