Role of stress concentration decrease in high-frequency peening for increasing fatigue resistance of welded joints

摘要

Compared are the experimental values of stress concentration factors (SCF) determined by the polarization-optical method with the calculated ones obtained by measuring parameters of fillet welds of T-joints in the as-welded state and after high-frequency peening. Shown is the relationship between a decrease in SCF under the effect of high-frequency peening and increase in fatigue resistance of welded joints.