358 原子力用配管鋼の低サイクル疲労強度に及ぼす複数表面ピットの影響(OS10-4 クリープ,耐震,疲労,OS10 エネルギー機器の経奪変化に関する健金性評価手法の開発とその適用(2))

概要

論文の詳細を見る
In the previous study on pipe with wall thinning, wall thinning part has been assumed as smooth. Therefore the effects of multi surface pits which occurred in the wall thinning part on low cycle fatigue strength of pipes are not clarified. In this study, plane bending fatigue test was performed using the specimen having multi surface pits and their effects on low cycle fatigue strength for pipes were evaluated. Consequently, it was found that the effect of pits on the number of cycle to failure(N_f) was small when N_f was less than 10^3. The universal slope method gave a safety evaluation of N_f for specimens having pits.
一般社団法人日本機械学会の論文
2007-10-24