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

Figure 3

Relationships among the AE rings, axial stress, and strain of 1# red sandstone specimen under the uniaxial cyclic loading and unloading compression. Logarithmic format was applied to the AE counts and the axial strain was magnified 1 × 10⁴ times.