Self-piercing riveting (SPR) is a high-speed mechanical joining technique for sheet metal materials. In this study, the mechanical properties of DC04 steel and AA5182 aluminium alloy in triple combinations joined by the SPR method were investigated. For this purpose, triple-joining processes were performed in different combinations, and macro-structural analysis and tensile shear tests were carried out by comparing their mechanical properties. As a result of the study, the highest shear forces were obtained in FFA (DC04-DC04-AA5182) and AFF (AA5182-DC04-DC04) combinations. As the number of aluminium layers increases, the probability of tearing increases in triple joining. Higher spread ratios were generally measured under conditions with hard materials in the upper layers and soft materials in the lower layers.
Self-piercing riveting (SPR) is a high-speed mechanical fastening technique for the point joining of sheet materials. The SPR technique has advantages such as not emitting any emissions to the environment, not creating a heat-affected zone, being able to be used with different materials and obtaining more durable structures compared to other joining techniques. In this study, the obtained strength of the triple combinations of DC04 steel, which is called FEP04 according to Italian norms and frequently preferred in the automotive industry in terms of cost, and AA5182-H111 aluminum sheets were examined by using the SPR technique. For this purpose, triple joining processes were performed in different combinations, and macro-structural analysis was carried out by comparing their mechanical properties. As a result of the study, the highest shear forces were obtained in FFA and AFF combinations. As the number of aluminum layers increases, the probability of tearing increases in triple bonding. In general, higher spread rates were measured under conditions with hard materials in the upper layers and soft materials in the lower layers.
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