Experimental Study on the Crack Initiation and Propagation of Unequal Cracks in Rock-Like Materials

Table 3

Test condition B.

Test conditions	Lab (mm)	α
Test condition 16	4	α = 0°
Test condition 17	4	α = 30°
Test condition 18	4	α = 45°
Test condition 19	4	α = 60°
Test condition 20	4	α = 90°
Test condition 21	6	α = 0°
Test condition 22	6	α = 30°
Test condition 23	6	α = 45°
Test condition 24	6	α = 60°
Test condition 25	6	α = 90°
Test condition 26	8	α = 0°
Test condition 27	8	α = 30°
Test condition 28	8	α = 45°
Test condition 29	8	α = 60°
Test condition 30	8	α = 90°