形状効果を勘案した疲労き裂進展過程の確立モデル(<小特集>信頼性工学小特集)

概要

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In the practical structures we can hardly disregard the effects of size and shape of their components as well as possible cracks on the fatigue crack propagation behaviors. Without assessing these effects property, we can hardly attain the desired level of reliability imposed on those structures. In this respect, we have constructed a stochastic crack growth model to reflect the engineering really,and have successfully derived, in a closed from, the fatigue crack propagation life distribution under random loading of the material with random propagation resistance. Further, as a numerical example, we have computed and discussed the residual life distribution of the material with center and single edge cracks subjected to constant amplitude stressing. Finally,we have proved the wide applicability of the proposed model.
社団法人日本材料学会の論文
1986-06-15