1428 不規則流体温度ゆらぎに対する熱疲労損傷の直接評価手法(S15-1 流体温度揺らぎ下強度評価,S15 熱応力,応力特異性と強度評価)

概要

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It is well known that fatigue damage accumulates around T-junctions of piping system where two kinds of fluid with different temperatures are mixed. Since there are a large number of T-junction, the simple method for evaluating the fatigue damage derived from this phenomenon is greatly important for both design and maintenance stages. In this paper, some methods evaluating fatigue damage directly from the stress power-spectral-density (PSD) are used for evaluating the damage due to this phenomenon, and the applicability of these method is discussed.
社団法人日本機械学会の論文
2005-09-18