残留応力を有するクラッド材における半だ円表面き裂の疲労伝ぱ挙動の推定

概要

論文の詳細を見る
In a previous paper, we proposed methods to predict the two-dimensional fatigue crack propagation life in residual stress fields. One method called the "U (crack opening ratio)-estimation" method used the superposition of the effects of external load and residual stresses to evaluate the effective mechanical load acting in the vicinity of the crack tip and the crack opening ratio. This method was extended to three-dimensional cracks. In this paper the extended method was applied to the prediction of propagation life of a semi-elliptical surface crack in a clad steel plate with residual stress. The predicted results were compared with experimental ones conducted by Ogura et al. The predicted crack propagation behavior was in good agreement with the experimental results.
社団法人日本機械学会の論文
1996-03-25