The MTS3000-Restan is a product developed by SINT Technology. It is a residual stress analyzer system, used to measure residual stresses inside several materials.
With a modification of the standard system, it can be used to measure residual stresses in composite materials, too.
A composite material is a material composed of at least two elements working together to produce material properties that are different to the properties of those elements on their own. In practice, most composites consist of a bulk material (the ‘matrix’), and a reinforcement of some kind, added primarily to increase the strength and stiffness of the matrix. This reinforcement is usually in fibre form.
The MTS3000 – Restan is an automatic system that use the hole-drilling strain-gage method, according to the ASTM E837 standard.