Experimental Study on Fracture Patterns and Crack Propagation of Sandstone Based on Acoustic Emission

<div>Evolution characteristics of AE fractures mode event number and cumulative event rate. (a) Brazilian split (specimen BT-1). (b) Preset angle shear (specimen CS-2). (c) Uniaxial compression (specimen UC-1, tensile fracture). (d) Uniaxial compression (specimen UC-1, shear fracture).</div>

Advances in Civil Engineering

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Figure 9

Figure 9: Experimental Study on Fracture Patterns and Crack Propagation of Sandstone Based on Acoustic Emission 