On Acoustic Emission and Post-peak Energy Evolution in Beishan Granite Under Cyclic Loading
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Cyclic tests (loading–unloading) provide an effective way for a better understanding of damage and deformation characteristics in rocks. In general, elastic and plastic strain components can be distinguished during cyclic experiments (Elliott and Brown 1986). In addition, the influence of accumulated damage on rock strength can be studied by this method (Martin and Chandler 1994). Detectable acoustic emission (AE) signals are emitted when the specimen is loaded, and AE monitoring techniques have been used to provide a detailed view of fracture nucleation and growth (Lockner et al. 1991; Thompson et al. 2005, 2006; Cai et al. 2001, 2007; Cai and Kaiser 2005). Since the AE events are closely related to the damage or fracturing of the rock, rock degradation or damage can thus be measured (Falmagne et al. 1998). Furthermore, energy is dissipated during the whole failure process and can be quantified (Xie et al. 2009, 2011; Wasantha et al. 2014). In this study, cyclic tests...
KeywordsBeishan granite Cyclic loading Acoustic emission Post-peak energy evolution
The present work is supported by the State Key Research Development Program of China (2016YFC0600704), the National Natural Science Foundation of China (51674266) and the Yueqi Outstanding Scholar Program of CUMTB. The financial supports are gratefully acknowledged. Special thanks to Professor H. Konietzky and Professor C.S. Lu for their help in improving the article.
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