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.
(a) Stress–strain, (b) specific dissipated energy, and (c) energy absorption efficiency of density-graded foam stacks with different adhesives (interlayers) under quasi-static conditions. Data for the uniform-density polyurea foams are included for comparison. Densification strains are marked with hollow circles in (a).
