Determination of energy dissipation during cyclic loading and its use to predict fatigue life of metal alloys

An approach to determine the specific energy dissipated during cyclic loading of metal alloys with load ratios between 0 and 1 is developed. The per cycle determined by using a limiting procedure obtain area enclosed successive unloading curves can be used for low-, medium-, high-cycle fatigue. Comparisons published data from two aluminum, one titanium, steel alloy show that predictions capture test results very well. A universal curve relating cycles failure nondimensional parameters derived. It shown, in some cases, method leads power law equations these directly complete stress–strain material no need fit experimental data. Furthermore, if certain conditions are satisfied, consistent existence an endurance limit Miner's rule.