The stress that results from the shortening in one dimension of an elastic body due to oppositely directed collinear forces tending to crush it
- Compressive strength involves testing and calculating how well a given specimen, product or material can survive compressive stress. Unlike tension, which expands or pulls, compression means a specimen, product or material is shortened or pressed down.
- Compressive strength of a material is the point at which the material fails. Calculating compressive strength involves testing to find this failure point and using the data from the test to feed the calculation.
- The final compressive strength number is in pounds-force per square inch, or psi.