Authors : Dong-Woon Han and Ho-Kyung Kim
Abstract: Self-Piercing Riveting (SPR) process is gaining in popularity in the automotive industry. This process can be used to join similar or dissimilar materials. Application of magnesium alloy in automotive industry is increasing due to its high specific strength. Therefore, in this study, fatigue tests areperformed using tensile and cross-tension specimens of magnesium alloy and steel sheets to evaluate the fatigue strength of SPR joints. For the tensile-shear and cross-tension geometries, the ratios of the fatigue endurance limit to the static strength were 26 and 9%, respectively. This indicates that the SPR joints are vulnerableto cross-tension loading, compared to tensile-shear loading. The equivalent stress intensity factor can predict the fatigue lifetimesof SPR joints with magnesium and steel sheets for the tensile-shear and cross-tension specimen geometries.
Dong-Woon Han and Ho-Kyung Kim, 2017. Fatigue Strength of Self-Piercing Riveted Joints of Steel and Magnesium Alloy Sheets. Journal of Engineering and Applied Sciences, 12: 8441-8445.