Analysis of Similarities and Differences between Acoustic Emission and Charge Signal Based on Fractal Characteristics of Coal Fracture

<div>Evolution of AE energy and charge pulse with stress. (a) The stress growth before peak strength. (b) The stress drop after peak strength.</div>

Advances in Civil Engineering

Figure 9: Analysis of Similarities and Differences between Acoustic Emission and Charge Signal Based on Fractal Characteristics of Coal Fracture 