Impacts of Cyclic Loading and Unloading Rates on Acoustic Emission Evolution and Felicity Effect of Instable Rock Mass

<div>Schematic diagram of the AE measurement. 1: rock specimen; 2: AE sensor; 3: loading platens of the testing machine; 4: spherical adapter; 5: AE per-amplifiers; 6: filters of AE signals; 7: analog-to-digital converter; 8: signal acquisition unit; 9: data analyzer. (a) Combined experimental platform; (b) postfracturing rock specimen.</div>

Advances in Materials Science and Engineering

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Figure 1

Figure 1: Impacts of Cyclic Loading and Unloading Rates on Acoustic Emission Evolution and Felicity Effect of Instable Rock Mass 