Theory and analysis of deformation moment tensor due to microcracking

The method to represent a general infinitesimal deformation as a deformation moment tensor is proposed and the physical meaning of deformation moment tensor in the case of microcracking is made clear. Developing the measuring and analysis system for acoustic emission waveform analysis, these moment tensor components due to microcracking can be determined experimentally. The remarkable method in this study is established to evaluate the moment tensor with the dynamic Green's function of finite media by computer simulation due to finite difference method and the iterative deconvolution with multiple Green's function.