Mechanical Damage Test and Model Study of Layered Composite Rock Based on Acoustic Emission and DIC Characteristics

Figure 9

Curve of AE ringing count and stress-time. (a) Ringing count and stress curve of S-6-A. (b) Ringing count and stress curve of S-7-B. (c) Ringing count and stress curve of S-3-AB.

(a)

(b)

(c)