ぜい性プラスチック破面模様の二次元定量式の検討

概要

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The equation of surface markings approximated in two dimensions in the previous report is discussed on its variation of the ratio of the limiting velocity of a secondary crack to the velocity of a primary crack, β', to extend the applicability of the equation over the general cases. The β' value is assumed to change along with the primary crack propagation as well as in a small interference distance of a marking. The latter is the special case for producing the abnormal fracture surface markings having their especially larger or smaller cusps. we have obtained the variations of the dynamic stress-intensity factor and the dynamic strain-energy release rate with respect to the primary crack propagation distance. These variations most likely control the e/C_<02> and d/C_<02> values and their fluctuations of the observed surface markings.
一般社団法人日本機械学会の論文
1986-04-25