Nominal stresses to assess damage in notched additively manufactured steel subjected to constant and variable amplitude multiaxial fatigue loading

The present paper reports on the use of Modified Wöhler Curve Method (MWCM) applied along with nominal stresses to estimate lifetime notched additively manufactured metallic materials subjected constant and variable amplitude multiaxial fatigue loading. MWCM is by defining critical plane via direction that experiences maximum variance resolved shear stress. In this setting, owing fact stress a monodimensional quantity, cycles are counted directly using standard Rain-Flow method. Based large data set taken from literature, validation exercise being performed strongly supports idea used in conjunction successful estimating damage also 3D-printed constant/variable load histories.