Table 6.

Fracture loads of the VO-notched PMMA specimens at different loading angles.

Notch End-Hole Radius (mm)	Loading Angle	Fracture Load (N)
	β (°)	${\mathbf{P}}_1$	${\mathbf{P}}_2$	${\mathbf{P}}_3$	${\mathbf{P}}_{\mathbf{a}\mathbf{v}\mathbf{g}}$
1	0 (mode I)	379.8	384.2	349.5	371.2
	40	415.3	451.4	421.1	429.3
	65	467.2	503.5	488.3	486.3
	72	556.6	501.3	538.7	532.2
	90 (mode III)	628.1	641.0	667.5	645.5
2	0 (mode I)	658.1	634.4	619.1	637.2
	40	767.5	783.1	835.6	795.4
	65	851.7	906.6	940.6	899.6
	72	706.7	674.9	723.1	701.6
	90 (mode III)	1009.8	1083.1	1077.3	1056.7
4	0 (mode I)	897.6	851.0	875.9	874.8
	40	1066.4	1046.2	1109.7	1074.1
	65	1347.8	1321.7	1257.3	1308.9
	72	1222.8	1324.2	1260.0	1269.0
	90 (mode III)	1297.9	1366.3	1247.1	1303.8