Evaluation of multiaxial spot weld fatigue parameters for proportional loading

The authors have conducted set of experiments to study the effects of combined tension and shear loads on the fatigue life of spot welded joints. The fatigue life of the specimens depended on the applied load amplitude, the ratio of shear to normal loading, and spot weld nugget diameter. The lower load amplitudes had longer fatigue lives, as did the cases which contained a higher amount of shear loading and specimens with a larger nugget...