| dc.description.abstract | In this study, we investigate the effects of different designs on the quality and strength of self-piercing riveting (SPR) in dissimilar metals. Specifically, we explore a wider range of dimensions that contribute to the overall strength of the joints. For this purpose, we prepared various dual-phase sheets of steel (DP780, DP980) and high-carbon steel (1180MS) to compare their strengths. Aluminum plates (Al6061) were also used consistently. We examine the shape and quality of the joints after riveting, and verify the trends of the important indicator, interlock, through simulations. Additionally, shear tests are conducted on the same samples to confirm the physical strength properties. Finally, the primary contribution of this study is to establish a correlation between the end-to-end process chain quality and shear test evaluations for self-piercing rivets of dissimilar metals, using Performance Metrics (PM) and mechanical properties, as well as energy absorption, as validation indicators. This study determined that the optimal combination is a die with a depth of 2.25mm, paired with a thickness of 1mm of 1180MS and 2mm of Al6061, capable of withstanding a maximum tensile force of 9.26kN and absorbing a maximum energy of 36.02 (J). This research employed an Artificial Neural Network (ANN) as a model to predict the quality and mechanical properties of riveting. The predicted outputs include interlock, remaining thickness, PM value, Maximum force, and energy absorption, serving as five reference indicators. The mean absolute errors (MAE) between the experimental and prediction results for the interlock, remaining thickness, PM value, maximum force and energy absorption reached 0.031mm, 0.051mm, 0.029, 0.714kN and 3.38J respectively, and the corresponding mean absolute percentage errors (MAPE) were 8.53 %, 12.99 %, 16.8 %, 11.22% and 13.96%. These results indicate a high level of prediction accuracy. Through validation against actual results, the study discusses the interrelationships between different riveting parameters and joint quality as well as mechanical properties. | en_US |