熱処理残留応力場における下限界近傍疲労き裂進展速度の予測
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概要
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Fatigue crack growth rates in a residual stress field can be predicted by using a superposition technique. This approach needs an analysis of residual and contact stress intensity factors as the authors proposed in previous papers. Objectives of this study are to discuss an approach for predicting the fatigue crack growth rates near the threshold where the oxide induced crack closure is dominant and to evaluate experimentally an effect of the residual plastic stretch on the crack surface contact. It is concluded that this approach gives a good prediction by the using upper bound of base metal crack growth rate data, and the residual plastic stretch has an effect on the crack surface contact stress.
- 一般社団法人日本機械学会の論文
- 1991-10-25