Strain Measurement Tutorial
Strain and stress are the result when it comes to external forces that are applied to a non-moving object. Strain is defined as the amount of deformation that an object experiences compared to its original size and shape (the ratio of increase in length regarding original length) .
The term strain is in most cases used to describe the elongation of a section.
Strain can be caused by the effect of a force.
Strain is a dimensionless quantity and is usually expressed in percentage. Typical measures for strain are less than 2 mm/m for steel and are often expressed in micro-strain units. One micro strain is the strain producing a deformation of one part per million.