Prediction of initiation and total life in fretting fatigue considering kinked cracks

This work proposes a methodology to compute fretting fatigue crack initiation and total life by iterative models calibrated with stress–strain-life curves. One of the main novelty such is assumption that length determined size critical distance. To separate propagation lives, numerical approach finite elements used. The incorporates not only multiaxial non-proportional characteristic stress field in problems, but also gradient effect. Crack path obtained means SWT parameter, validate it, analysed results are compared tests considering cylindrical-flat configuration (Aluminium 7075-T651 alloy). Most estimates, as well ones, within scatter band 3.