A new proposal of effective stress and critical distance for fatigue at notches

The Theory of Critical Distance (TCD) and its associated methods have proved useful for predicting fatigue and fracture failure under stress gradients. This work reports the first analytical deduction of the effective stress and its critical distance in notched components under fatigue. The results, consistent with their LEFM counterparts, indicate that the most accurate representation of the Notch Effective Stress (NES) is the geometric mean of the stresses used in the Point and Line Methods respectively, evaluated at the critical distance of the material proposed by Taylor