応力聴診器を用いたき裂の面内せん断モード応力拡大係数解析の試み

抄録

In this study, we attempted to measure the stress intensity factor of in-plane shear cracks using a stress stethoscope. Using a tensile shear flat plate specimen with the artificial cracks and a 3-axis stress stethoscope, the strain near the crack tip was measured and the KII value was calculated. Furthermore, the possibility of this measurement method was verified by comparing the case of using the conventional 2-axis orthogonal strain gauge and theoretical KII value extrapolated by the results of finite element analysis. As a result, by comparing the KII values of the three methods, we suggested the possibility of this method using a 3-axis stress stethoscope and clarified the scope of its application.