Tensile testing, also known as tension testing, is a standard materials science test in which a sample material is subjected to tension until failure. The results from tensile testing are commonly used to select a material for a given application, for QA purposes and to predict how a material will react under other types of situations. Properties that are directly measured via a tensile test are ultimate tensile strength, maximum elongation and reduction in area. From these measurements the following properties can also be determined: Young's modulus, Poisson's ratio, yield strength, and strain-hardening characteristics.
Custom compression and tensile testing is performed by our staff on prototypes, production pieces and competitor parts using custom designed fixtures and procedures for proof load and determination of ultimate failure loads/locations. The reports will include photographic documentation of the process, observations, data, and comments for design improvement, due diligence testing, and other safety related concerns. The basic idea of tensile testing is to place a sample of a material between two fixtures called "grips" which clamp the material.
The material has known dimensions, like length and cross-sectional area. We then begin to apply weight to the material gripped at one end while the other end is fixed. We keep increasing the weight (often called the load or force) while at the same time measuring the change in length of the sample.