年次大会
Online ISSN : 2424-2667
ISSN-L : 2424-2667
セッションID: J032033
会議情報
J032033 流体温度変動による配管熱疲労に関する研究 : 配管熱疲労に関する等価応力振幅を用いた信頼性評価手法([J032-03]エネルギープラント安全に向けた構造/熱流体/材料の達成問題(3))
鈴木 隆史笠原 直人
著者情報
会議録・要旨集 フリー

詳細
抄録
This paper deals with the high cycle thermal fatigue phenomenon at a T-junction. The case of the phenomenon is a turbulent mixing at a T-junction, where hot and cold temperature fluids are mixed, in a plant piping system. The current guideline for high cycle thermal fatigue at pipes published by the Japan Society of Mechanical Engineers does not provide any procedure to measure actual safety margins, although both design and maintenance of nuclear plants need quantification of safety margins. Therefore, this paper proposes a new reliability assessment method for thermal fatigue in piping which considers loading and strength uncertainties to quantify safety margin. Since the procedure of the method should be concise for practical use, the proposed method uses the new concept "equivalent stress amplitude" which makes the complicated loading easy to deal with. Due to its conciseness and low calculation cost, the proposed method can contribute to introducing reliability assessment to the guideline for thermal fatigue evaluation.
著者関連情報
© 2013 一般社団法人 日本機械学会
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