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

Table 2

The critical b-values of AE and the corresponding stress level.

Specimen	bc	Corresponding stress level
00–90	0.64	0.94
30–90	1.24	0.88
45–90	1.17	0.85
60–90	1.25	0.88
90-90	0.94	0.90