Mechanical and Acoustic Emission Responses of Rock Fragmentation under Disc Cutter Penetration

Figure 12

Evolution sequence of the accumulated AE events of specimen SW5 under cutter penetration (the percentage denotes different loading stage, i.e., the ratio of current penetration depth to that at the cracking point): (a) 20%; (b) 40%; (c) 60%; (d) 80%; (e) 100%; (f) 120%.

(a)

(b)

(c)

(d)

(e)

(f)