4053 モードIII荷重下におけるき裂面摩擦機構の研究(G03-12 き裂進展(1),G03 材料力学)

概要

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The mode III fatigue crack propagation that a force of friction by a contact on a crack surface influenced very much a fatigue crack propagation was investigated. In this study, it was investigated about relation of friction torque by compliance method and roughness of a crack surface. As a result the frictional force has depended on roughness of crack surface greatly. Moreover, roughness of progressed crack tip immediately after the formation of the fracture surface indicated almost the same value in each grain size without depending on the load torque and J integral, plastic zone size. From the above-mentioned result, the ruggedness on the crack surface of each grain size of the crystal that depended to receive the great influence of a metallurgical factor of the slipping system etc. of the crystal grain that exists forward of the crack tip is formed.
社団法人日本機械学会の論文
2006-09-15