Hydroblasting influence on polycyclic fatigue of cylindrical parts made of D16T alloy using reference specimen initial deformations evaluation

The possibility of outstripping superficial plastic deforming by hydroblasting influence on cylindrical parts of various diameters (10-40 mm) made of D16T alloy with circular cuts endurance limit evaluation using residual stresses (initial deformations) of reference specimen determination results has been examined. It’s established that the maximum calculated compressive residual stresses in smooth parts differ from the experimentally found ones less than 7%, in cut parts this difference is 8%. Endurance limit increments for parts with cuts have been defined using the average integral residual stresses criterion by calculation method. The difference between experimental and calculated values of hardened parts with concentrators endurance limit increase doesn’t exceed 17%.