Did you know that the typical stress-strain curve obtained from a uniaxial tensile test is just an approximation? It doesn't consider the fact that the dimensions of the test specimen change ...

A neck is formed in a tensile test specimen when the UTS of the engineering stress/strain curve is reached. Prior to this stress-strain condition the plastic deformation occurs throughout the sample ...

Tensile testing evaluates the strength ... modulus are determined using an extensometer. Specimens can be molded to fit the required dimensions or machined from cured products, such as cast ...