Figure 3.
Load–displacement curve of loading-unloading-reloading process with maximum indentation depth smaller than the critical indentation depth.
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.