Figure 7.
Fracture of the upper part of a PE foam with a relative density of 0.5. The axis of the cylinder is between the words ‘Skin’ (surface of the foam) and ‘Core’ (internal part of the foam).
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.