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

Figure 2

The granite specimens with two orthogonal cracks: (a) α = 0° 00–90, (b) α = 30° 30–90, (c) α = 45° 45–90, (d) α = 60° 60–90, and (e) α = 90° 90-90.

(a)

(b)

(c)

(d)

(e)