プロセスゾーンを考慮したき裂進展の理論解析と実験的検証

概要

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In this paper, a stress funotion is obtained for a problem of infinite isotropic plate containing a central straight crack subjected to normal uniform load. This function is composed of afinite stress concentration and a process zone at the tip of the crack. The validity of the funotion is obtained throtlgh numerical calculation and the limit of its application to a finite plate is considered. By applying this stress function to the data of fracture development obtained by experiment, an evaluation of the length of the process zone was made, which up to now has been uncertain in this type analysis. The results support a conclusion that an analysis using this stress function is effective in evaluating the propagation of crack and the length of process zone.
社団法人日本材料学会の論文
1998-02-15