This work presents an experimental parametric study of adhesively bonded Single Lap Joint (SLJ) geometries between relatively thick dissimilar adherents. The primary objective of this study is to investigate the effect of various parameters, i.e. adherents’ thicknesses, adhesive thickness and overlap length, on the failure load and failure mode of joints with dissimilar materials. For this purpose, mild steel and carbon fiber reinforced polymer (CFRP) laminates have been considered as the structural adherent materials. Seven SLJ cases have been
considered for fabrication and experimental testing. The SLJ specimens were tested under a uni-axial tensile quasi-static displacement. The force-displacement and force-strains recordings are presented and conclusions regarding the joints stiffness and strength are obtained.