Acoustic Emission Behavior of Rock-Like Material Containing Two Flaws in the Process of Deformation Failure

Figure 9

The AE location for cracks initiating and propagating in flawed sample ( = 45° and = 75°).

(a) = 1.69 MPa ( = 207 s)

(b) = 2.25 MPa ( = 274 s)

(c) = 3.15 MPa ( = 381 s)

(d) = 3.178 MPa ( = 385 s)

(e) = 3.357 MPa ( = 406 s)

(f) = 3.465 MPa ( = 419 s)

(g) = 3.518 MPa ( = 425 s)