Feasibility of measuring residual stress profile in different self-pierce riveted joints

The feasibility of measuring residual stresses in self-pierce riveted (SPR) joints by neutron diffraction technique was investigated. The main challenge involved dealing with the very small dimensions of SPR joints. Two different joints were examined: aluminium–steel and steel–steel. Even though small dimensions were involved, meaningful results were obtained. In the rivet head, tensile stress was observed for the steel–steel sample, whereas...