Fig. 6

Crack type classification. (a) T-A (tensile crack); (b) T-B (tensile crack); (c) T-C (tensile crack); (d) T-D (tensile crack); (e) S-A (shear crack); (f) S-B (shear crack); (g) M-A(Mixed crack, first shear then tensile); (h) M-B (Mixed crack, first tensile then shear); (i) I (Far-field crack).