Abstract
Abstract In the article a proposal of loading non-proportionality measure H for sinusoidal biaxial loading has been presented. On the basis of non-proportionality measure, there has been proposed a bending and torsional fatigue strength, with a phase shift of components and the mean value has been proposed. Moreover, a high-cycle fatigue life criterion based on the same non-proportionality measure has been proposed. The predictive capability of both criteria were demonstrated by analysing experimental results from the literature. The predicted results are generally in good agreement with the experimental ones.
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