地震荷重下における配管のき裂進展評価手法の提案

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概要

• 論文の詳細を見る

• In this study, an effect of excessive tensile and compressive loading on the crack growth behavior of piping has been evaluated through cracked plate testing. It was observed that excessive loading had changed crack growth rate. Effect on the crack growth behavior of excessive load was evaluated focusing on a crack blunting and a stress distribution near the crack tip. The crack growth evaluation method under seismic loading was proposed. Four-point bending seismic loading tests were performed using piping specimen in order to confirm the applicability of the proposed method to the piping. It was indicated that the crack growth behavior on piping could be evaluated conservatively using the proposed method, while the crack growth behavior due to seismic loading is evaluated non-conservatively by the existing method.

• 一般社団法人 日本機械学会の論文

著者

• 鬼沢 邦雄

  （独）日本原子力研究開発機構

• 李 銀生

  （独）原子力安全基盤機構

• 山口 義仁

  （独）日本原子力研究開発機構

• 勝山 仁哉

  （独）日本原子力研究開発機構

関連論文

• 弾塑性破壊力学パラメータに基づく繰返し過大荷重による配管材のき裂進展評価法の提案
• 過大な圧縮荷重がき裂進展挙動に及ぼす影響
• 地震荷重下における配管のき裂進展評価手法の提案

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