Mechanical Properties
Tensile Force
Pulls out of the cross-sectional area.
In the direction of force, length increases. Cross-sectional area decreases.
Compressive Force
Pushes into the cross-sectional area.
In the direction of force, length decreases. Cross-sectional area increases.
Stress
Force per unit area.
Engineering stress
True stress
Strain
Dimensional change with respect to the original dimensions.