G0301101 Fatigue Life Prediction for Spot Weld Joints Considering Crack Propagation (1st Report, Measurement of Fatigue Crack Aspect Ratio of Spot Weld Joints)

Although resistance spot welded joints are widely applied for fabrication of the monocoque body of cars, fatigue strength of the joints are less than the base materials in general. It is very important for satisfying the structural integrities of car bodies to evaluate the fatigue performance of spot welded joints. On the other hand, the S-N curves approach for the fatigue life prediction, which is commonly applied in the structural design...