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応力再配分モデルに基づく有孔板の高温疲労強度評価

Fatigue strength evaluation of perforated plate at elevated temperature based on SRL method

渡部 修*; Bubphachot, B.*; 笠原 直人; 川崎 信史 

Watanabe, Osamu*; Bubphachot, B.*; Kasahara, Naoto; Kawasaki, Nobuchika

応力再配分モデルに基づき有孔板の高温疲労強度評価を実施した。孔径と孔の個数をパラメータに取り、SUS304有孔板の550$$^{circ}$$Cでのき裂発生寿命と破損寿命を評価した。

This paper is to evaluate the fatigue strength for the perforated plate at elevated temperature based on Stress Redistribution Locus (SRL) method. The test specimens are made of SUS304 stainless steel, and temperature is kept to be 550$$^{circ}$$C degree, and the geometry of the perforated plate specimens are changed by number of holes and diameter size of the hole. The SRL method is used to predict number of cycle of crack initiation (Nc), and the failure (Nf) for the perforated plate.

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