The welding quality of spot weldment is very important because it dominates strength. stiffness. safety and etc of vehicles. Therefore. quality control and fatigue life evaluation of spot weldment are necessary process. This paper presented a method f...
The welding quality of spot weldment is very important because it dominates strength. stiffness. safety and etc of vehicles. Therefore. quality control and fatigue life evaluation of spot weldment are necessary process. This paper presented a method for determining the fatigue life of 3-lap spot weldment of galvanize steel and high strength steel sheet. To examine the validity of the proposed fatigue life equation and S-N curve, the fatigue life is estimated using the lethargy coefficient as the total defect estimation coefficient from the tensile-shear test. Then this result of calculation was compared to the result of fatigue test. This method can save the time and the cost in processing of predicting the life cycle of a structure.