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タイトル: S45C調質材の二段二重変動荷重下の回転曲げ疲労寿命評価
その他のタイトル: Estimation of Fatigue Life on Heat-Treated 0.45%C Steel under Two-Step Rotating Bending
著者: Takase, Toru
著者(別表記) : 高瀬, 徹
発行日: 2009年 3月
出版者: 日本機械学会
引用: 日本機械学會論文集. A編, 75(751), pp.322-326; 2009
抄録: Rotating bending fatigue tests were performed using heat-treated 0.45%C steel specimens under the constant amplitude and the two-step loading and then the cumulative fatigue was investigated. Firstly, both the original S-N curve for the virgin specimen and the S-N curves for the specimens damaged by prior fatigue were plotted on the double-logarithmic scale. All curves could be linear approximately. The values of the cumulative fatigue damage defined by modified Miner's rule under two-step loading were less than unity. The fatigue life and fatigue limit for the damaged specimen tended lower, as the degree of prior damage increased. Next, the life prediction method for the damaged specimens was proposed. The estimated results were in good agreement with the experimental ones. Then the lower limit of cumulative fatigue damage was examined based on the proposed method. The minimum value of the estimated lower limit was about 0.6, but it was 0.4 when the scatter of the experimental results was considered.
キーワード: Fatigue / Life Prediction / Cumulative Fatigue Damage / Two-Step Loading / Iron and Steel
URI: http://hdl.handle.net/10069/22127
ISSN: 03875008
権利: Copyright (C) 2009, The Japan Society of Mechanical Engineers
資料タイプ: Journal Article
原稿種類: publisher
出現コレクション:060 学術雑誌論文

引用URI : http://hdl.handle.net/10069/22127



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