Related Rule Study of Subcritical Crack Growth and Threshold Values in Transversely Isotropic Slates

Table 3

The specimen mechanical parameters.

β	Number of sample	Compressive strength (MPa)	Elastic modulus (GPa)
0°	3	74.79	38.38	0.19	0.19
30°	3	32.21	23.00	0.20	0.21
45°	3	24.96	21.77	0.23	0.20
70°	3	27.00	23.98	0.22	0.24
80°	3	63.39	32.96	0.30	0.18
90°	3	70.50	41.85	0.25	0.23