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.
Mechanical properties are described by deformation in response to forces applied over a surface (stress (σ)). The descriptive moduli of compression, tension and shear are determined from the strains (ε) observed in response to applied stress. The poisson ratio and bulk modulus indicate the compressibility of materials under stress.
