Manual torsion testing of different materials to fracture Features - generate the twisting moment by means of a worm gear - measure the twisting moment by means of a strain-gauge measuring shaft - incremental encoder for measuring the twisting angle Learning objectives/experiments - torsion tests with different materials and load until specimen fracture - determine the twisting strength - plot the diagram of twisting moment over twisting angle - influence of -- specimen material -- specimen cross-section -- specimen length Specification [1] torsion tests with different metallic specimens to fracture [2] manual generation of the twisting moment by means of handwheel and worm gear [3] specify the input angle via handwheel [4] long and short specimens of steel, aluminium, brass [5] movable measuring device for different specimen lengths [6] measure the test moment by means of strain-gauge measuring shaft and measuring amplifier [7] strain-gauge measuring shaft with compensation for inherent deformation [8] twisting angle measured by incremental encoder [9] electronic measuring amplifier with touch panel to display twisting moment and twisting angle [10] software for data acquisition via USB under Windows 10 Technical data Max. twisting moment: 30Nm Loading device, worm gear - transmission ratio: 1:63 Specimen mount: 2x 17mm, hexagonal Specimens - diameter: 6mm - 4x 75mm, steel - 4x 75mm, aluminium - 4x 75mm, brass - 2x 175mm, steel - 2x 350mm, steel - 2x 700mm, steel Measuring ranges - twisting moment: 0...30,0Nm - angle of twist: 0...±3200°, resolution: 0,1° 230V, 50Hz, 1 phase 230V, 60Hz, 1 phase; 120V, 60Hz, 1 phase UL/CSA optional LxWxH: 1400x700x500mm (experimental unit) LxWxH: 230x210x120mm (measuring amplifier) Weight: approx. 43kg (total)