Experimental Study on Initial Damage Point of Deep Granite under Step Cyclic Loading Method

<div>Typical AE monitoring data and stress-strain curve: (a) AE monitoring data and stress-strain curves; (b) AE data and corresponding initial crack stress thresholds.</div>

Advances in Civil Engineering

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Figure 7

Figure 7: Experimental Study on Initial Damage Point of Deep Granite under Step Cyclic Loading Method 