Synchronous multi-scale observations on rock damage and rupture |
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| Authors: | XH Xu SP Ma MF Xia FJ Ke YL Bai |
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| Institution: | aState Key Laboratory of Nonlinear Mechanics (LNM), Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080, PR China;bDepartment of Geophysics, Peking University, Beijing 100871, PR China;cDepartment of Physics, Peking University, Beijing 100871, PR China;dDepartment of Applied Physics, BeiHang University, Beijing 100088, PR China |
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| Abstract: | This paper reports a multi-scale study on damage evolution process and rupture of gabbro under uniaxial compression with several experimental techniques, including MTS810 testing machine, white digital speckle correlation method, and acoustic emission technique. In particular, the synchronization of the three experimental systems is realized for the study of relationship of deformation and damage at multiple scales. It is found that there are significant correlation between damage evolution at small and large length scales, and rupture at sample scale, especially it displays critical sensitivity at multiple scales and trans-scale fluctuations. |
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