Notch-Stress S–N Curves for Welded Aluminum-Alloy Components Subjected to Bending

Fatigue analysis of aluminum-alloy welded joints based on the linear elastic notch-stress approach is presented in this paper. The International Institute Welding proposes two variants approach, one for thick joints, i.e., with a plate thickness 5 mm or more, reference radius rref = 1 mm, using FAT71 design curve, and thin less than 0.05 FAT180 curve. In work, feasibility proposed S–N curves, obtained mainly by fatigue tests axially loaded was investigated 4 subjected to bending. performed types joints: joint longitudinal fillet-welded attachment round sheet attachment. It shown that more accurate estimation life aluminum bending can be