Investigation on Energy Evolution and Storage Characteristic of CSTBD Red Sandstone during Mixed-Mode Fracture

Figure 5

Typical load-displacement of SLUMF tests: (a) specimen 10-S-2; (b) specimen 10-S-4; (c) specimens 20-S-3; (d) specimens 20-S-5.

(a)

(b)

(c)

(d)