1708 PWR環境下におけるオーステナイト系ステンレス鋼のSIN波ひずみ変動に対する環境疲労試験(OS17-2 低サイクル疲労とその応用-設計疲労線図の検討-)

概要

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It was recently reported that the fatigue tests for carbon and low alloy steels under sine wave loading condition in BWR environment showed that the experimental fatigue lives were two to five times longer than those predicted by the modified rate approach method. In order to confirm whether the same tendency is observed in PWR environment, fatigue tests for sine wave loading were performed for Type 316 stainless steel material in simulated PWR water environment As a result, the effect on fatigue life by sine wave loading reported in BWR environment was not observed in our test results in PWR environment Also these results confirmed that the modified rate approach method was applicable under such continuous strain rate changing condition.
一般社団法人日本機械学会の論文
2010-10-09