Evaluation of Low-Cycle Fatigue in Simulated PWR Environment
For developing fatigue design curve of cast stainless steel that is used in piping material of nuclear power plants, a low-cycle fatigue test rig was built. It is capable of performing tests in pressurized high temperature water environment of PWR. Cylindrical solid fatigue specimens of CF8M were used for the strain-controlled environmental fatigue tests. Fatigue life was measured in terms of the number of cycles with the variation of strain amplitude at 0.04%/s strain rates. The disparity between target length and measured length of specimens was corrected by using finite element method. The corrected test results showed similar fatigue life trend with other previous results.
Soon-Bok Lee and Yun-Jae Kim
I. S. Jeong et al., "Evaluation of Low-Cycle Fatigue in Simulated PWR Environment", Key Engineering Materials, Vols. 326-328, pp. 1011-1014, 2006