Table 1.

The test matrix for laminates with prefabricated surface cracks.

Specimen	l (mm)	d (mm)		α (°)
S1-1~3	10	0.8	(shallow)	0, 45, 90
S2-1~3	18	0.8		0, 45, 90
S3-1~3	26	0.8		0, 45, 90
S4-1~3	10	1.6	(medium)	0, 45, 90
S5-1~3	18	1.6		0, 45, 90
S6-1~3	26	1.6		0, 45, 90
S7-1~3	10	2.4	(deep)	0, 45, 90
S8-1~3	18	2.4		0, 45, 90
S9-1~3	26	2.4		0, 45, 90