Study on New Correction Method of S-N Curve for Metallic Material

In order to calculate the exactly fatigue life of mechanical structure,a new correction method of S-N curve of metallic material was discussed based on no-probability coalition theory.Compared with experience formula method and probability statistics method,the new method can overcome the shortcoming of probability statistics witch needs a lot of data,and be calculated simply.An example illustrates that the new method is fast and accuracy.