Structural notch effect in steel welded joints

Stress concentrators occurring in welded joints have been discussed in this paper. Methods of fatigue life evaluation for welded joints have been presented. Moreover, the paper contains a description and methods of determination of the fatigue notch coefficient Kf. Histories of the fatigue notch coefficient Kf were plotted for a double-Vee butt weld. The graphs have been based on strain analysis for some steels.