Damage Assessment of Low-Velocity Impacted Sandwich Composite Structures Using X-Ray Micro-Computed Tomography

Table 4

Impact energies and statuses of impacted specimens.

Drop height (m)	Impact velocity (m/s)	Impact energy (J)	Remark on status
0.02	0.9	2	BVID
0.03	1	3	BVID of delamination
1	2	11	Top face sheet penetrated
1.15	2.6	19	Near full penetration
1.2	2.8	22	Full penetration