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

<div>System for testing. (a) Instruments of the testing system. (b) Structural diagram of the shield cylinder. In the figure, the location of the AE transducers and charge preamplifier is shown, but the number of sensors is not limited.</div>

Advances in Civil Engineering

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Figure 2

Figure 2: Analysis of Similarities and Differences between Acoustic Emission and Charge Signal Based on Fractal Characteristics of Coal Fracture 