Compression Tests

Compression tests are designed to measure the performance of a material, component or structure when subjected to a crushing load i.e. a load attempting to reduce its height. Response to compressive force results in expansion of the middle section of the test specimen. As with tensile testing, the material will exhibit elastic strain (shortening); and if the load continues to increase; will exhibit a buckling or fracturing mode of failure. The highest recorded load is then used to calculate the Ultimate Compressive Strength (UCS).]

Compression Springs: Testing of “compression” springs involves applying a gradually increasing compressive load and measuring Load vs Reduction of Height to determine the “Spring Rate” or “Spring Constant” e.g. in mm/kN.