Table 3.

Results of failure testing for human basilar artery specimens

		Failure initiation location		Ultimate failure location						Failure process
	#	Clamp	Middle	Clamp	Middle	Ultimate stress (MPa)	Ultimate stretch	Stress drop caused by	Failure mode	Gradual	Abrupt
DB-FT	H1		✓		✓	4.72	1.7	Total breakage	Cracking		A
	H2		✓		✓	5.48	1.74	Total breakage	Cracking		A
	H3		✓		✓	6.21	2.09	Total breakage	Cracking	G-1
	H4	✓		✓		6.26	1.98	Total breakage	Cracking		A
	H5		✓		✓	3.16	1.7	Total breakage	Cracking	G-1
	H6		✓		✓	3.79	1.67	Total breakage	Cracking		A
H7		✓		✓	3.43	1.77	Total breakage	Cracking		A
Rect-FT	H8	✓		✓		3.54	2.27	Partial breakage	Cracking		A
	H9	✓		✓		7.77	2.86	Media tear	Cracking		A
	H10	✓		✓		3.88	1.77	Partial tear	Necking	G-3
	H11	✓		✓		1.48	1.42	Media tear	Delamination	G-3
H12	✓		✓		1.54	2.13	Partial tear	Necking	G-2
Rect-SP	H13	✓		✓		2.62	2.1	Media breakage	Delamination	G-1
	H14	✓		✓		1.68	2.04	Media breakage	Delamination	G-2
	H15	✓		✓		2.85	1.9	Media breakage	Delamination	G-3
	H16	✓	✓		✓	5.72	1.89	Total breakage	Cracking		A
H17	✓		✓		5.51	1.63	Partial breakage	Cracking	G-1