Abstract
The prediction of fatigue life under varying stress amplitude is usually done from the S-N curve in the fatigue tests of constant stress amplitude by using Miner criterion. However, it has not been clarified whether the mean and the variance of the Miner damage values should result from only the central tendency and the dispersion of the S-N curve, or from the change in stress amplitude from constant to varying. In the present paper, the above-mentioned problem is studied by using Bayesian analysis in reliability engineering on the fatigue test data under constant and varying-stress amplitudes.
