Fatigue Life of the 316L Stainless Steel Based on Dual-parametric Weibull Distribution

Abstract In order to investigate the fatigue strength of the 316L stainless steel (316LSS) diffusion welded joint, it is necessary to study the fracture time of the 316L-SS. The fracture time test of the 316L-SS has many problems, such as high cost, long time consumption and little data acquisition. Regarding the issue above, the Weibull distribution method is adopted to process the test data of small sample size in this paper. At the same time, the P-S-N curve of the 316L-SS is established to obtain the relationship between maximum stress and fatigue life under different reliability.