Abstract
The life prediction method developed in the 1st report for the low-cycle fatigue of notched specimens in completely reversed loading was applied to the low-cycle fatigue accompanied by (1) a change of stress amplitude and (2) the mean stress. The effectiveness of the method for these two cases is discussed with the measurement of the strain at notch root and the analysis by the finite element method. When a circumferentially notched specimen is subject to overloading, the strain range at notch root after overloading becomes smaller than the value without overloading. The strain ranges at notch root under the same stress amplitude and different mean stresses are nearly equal to each other and the crack initiation periods become nearly equal.
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