Abstract
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.
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More From: TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A
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