A203 マスターカーブ法による国産原子炉圧力容器鋼の破壊靭性評価(材料強度評価-1,OS-6 保全・設備診断技術(3),一般講演,地球温暖化防止と動力エネルギー技術)

概要

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The Master Curve gives the relation between the median of fracture toughness and temperature in ductile-brittle transition temperature region. The Master Curve approach theoretically provides the confidence levels of fracture toughness in consideration of the inherent statistical distribution of fracture toughness. In this study, fracture toughness tests for Japanese reactor pressure vessel (RPV) steels, SFVQ1A and SQV2A, with various specimen sizes and shapes were conducted. The differences in test temperature, evaluation method, and specimen size and shape did not affect the Master Curves, thus, it was ascertained that the Master Curve approach could be well applied to them. The adequacy of the lower bounds based on the Master Curve was also verified by comparing with experimental fracture toughness data.
社団法人日本機械学会の論文
2008-06-18