513 コースティックス法による異材接合界面の応力拡大係数の測定(GS-3 高温強度及び接合材の疲労)

概要

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The mechanical consideration of the bimaterial interface is a very important problem on the evaluation of the material. Then, the stress intensity factor K for a crack along the bimaterial interface has been measured by the method of caustics. The effect of initial curve for the measurement accuracy was examined. As a result it is possible to apply this method to the bimaterial jointed materials when the maximum diameter D of the image is used and the value r_D of initial curve is larger than the value r_D^<min> obtained in this study. And, the value r_D^<min> is about half a value of the specimen thickness when the same materials are jointed. It becomes smaller when the different materials are jointed. There is a close correlation between the size of 3-D stress field and Young's modulus ratio of each specimen.
一般社団法人日本機械学会の論文
2001-03-16