On the influence of different in-plane biaxial loading conditions over FCG lives

• An automatic fatigue crack growth algorithm was used to evaluate the influence of in-phase and out-of-phase loadings in FCG. In-phase lead deflection under a 0.5 biaxial load ratio due mixed mode loading conditions. Fatigue life is proportional initial notch angle but inversely phase shift. Crack propagation direction influenced by combination static cyclic on different axes. Different frequency created similar behaviour fully In-plane conditions have strong over trajectories lives. Under equal both axes, pure I occurs. Mixed were simulated using ratios, II can be introduced when phases or mean values are used. Using an algorithm, cruciform specimen. β , shift ϕ . The present results increase understanding.