A novel method to evaluate the mechanical properties of resistance spot welds under dynamic loading

Abstract

The mechanical properties of resistance spot welds are integral in dictating joint performance in service. However, previous studies have evaluated the joint response to loading under the quasi-static condition which is not a true indication of the loading condition in service. This work has developed a novel method to evaluate spot welds under dynamic loading using two test geometries (opening and shear mode). The testing technique was used to compare the mechanical properties of a conventional and in-situ post-weld heat treatment (PWHT) schedule. Our developed method can expand the testing capability of single-spot welds under dynamic loading.