AE計測に基づく岩石の微視的強度分布評価に関する研究

概要

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A method for determining microscopic strength distribution in rocks using an acoustic emission (AE) technique is proposed. The principle of the method is based on a statistical model for fracture analysis of quasi-brittle materials which has been developed by McClintock et al. [Int. J. Fract., 15 2 (1979), 107-118]. The statistical model assumes an inhomogeneous strength distribution of the material which is dictated by the fracture probability with Weibull distribution. Firstly, the principle of the statistical method is verfied by performing numerical simulations using a network model. Secondly, the method is applied to experimental results of uniaxial tension tests and AE measurements conducted on granite and marble. It is demonstrated that the numerical and experimental results support the validity of the proposed method for determining the microscopic strength distribution in rocks.
一般社団法人日本機械学会の論文
1997-05-25