To perform the tests, the test specimen is clamped and twisted by means of a flywheel and a worm gear until it breaks. The force is gradually applied to the specimen to observe the elastic strain produced. The specimen will deform and manifest itself as a twisting of the two ends of the specimen relative to each other.
The Torsion Test Unit (30Nm) "MTT" has a shaft attached to the test specimen where the moment of torsion is measured with strain gauges. By means of an angle measuring sensor it is possible to determine the torsion angle. This measuring system is movable by means of guides, so that it can be adapted to the different lengths of the test specimens.
Both moment and angle measurements can be visualized by means of digital displays on an electronic console. These measurement values can also be acquired through a computer with included data acquisition software.
Steel, brass and aluminum specimens of different lengths are supplied for practical exercises. All of them have hexagonal edges for fixing.
The unit has a transparent protective cover that provides protection against breakage of the test specimens and allows observing shear breakage.