702 円孔板の荷重制御型疲労・クリープ疲労き裂進展評価(OS10-(1) 発電機器の材料・構造解析と評価,オーガナイズドセッション)

概要

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In order to evaluate the applicability of J-integral for crack propagation rate of perforated plate, the load-controlled fatigue and creep-fatigue tests using SUS304 perforated plates having different diameter were carried out. The separation of the creep crack propagation from the creep-fatigue crack propagation is also a purpose of this study. The fatigue and creep J-integrals were calculated from load-displacement curve obtained from experiment. As the result, it was shown that the J-integrals can be applied to evaluate fatigue and creep-fatigue crack propagation rate of perforated plate. And separation of the creep crack propagation from the creep-fatigue crack propagation is possible by using linear summation law for crack propagation rates.
2009-08-25