Figure 6.
(a) Internal energy vs. hourglass energy, and (b) the 3D and 2D damage marks of the projectile penetrating the solid steel plate.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.