Strain
Also: engineering strain, ε
Deformation measured relative to an original dimension.
Axial engineering strain is change in length divided by original length and is dimensionless.
- Units
- dimensionless
- Formula
ε = ΔL/L₀
Example 0.1 mm extension over 200 mm is 0.0005 strain.
Common misconception Strain is not force, stress, or absolute extension by itself.