As a result of the trend towards lightweight construction in manufacturing, there has been a significant increase in the use of self-pierce riveting (SPR) joints in engineering structures and components. Mechanical structures assembled by SPR are expected to possess a high damping capacity. The aim of this paper is to provide an experimental technique for the investigation of the forced vibration behavior of SPR joints. The dynamic test software and the data acquisition hardware were used in the experimental measurement of the dynamic response of the SPR joints. The frequency response functions of the SPR joints of different rivet number were measured and compared.