Acoustic Emission Characteristics and Failure Prediction of the Granite with Orthogonal Cracks under Compressive Loading

Figure 5

The evolutions of b-value, ring-down count, and cumulative ring-down count of AE with time for the specimens with orthogonal cracks. (a) 00–90. (b) 30–90. (c) 45–90. (d) 60–90. (e) 90-90.

(a)

(b)

(c)

(d)

(e)