DESCRIPTION
Technical Description
The unit is used for torsional testing of different materials to fracture. Test torque and angle of twist are measured. Rods of different materials, length and diameter are used as specimens. For adaptation to different length rods, the dolly can be slid. The test rod holder is a commercially available ¾" socket. The base plate is reinforced against twisting with square sections. A transparent plastic cover provides protection against flying debris on fracture.
The torque is applied using a reduction geared motor. Four different drive velocities (both clockwise and counterclockwise) are realised with the frequency converter. A strain gauge measuring shaft provides the torque as an electrical signal, the angle of twist is recorded by an incremental encoder. Both values are displayed digitally.
The microprocessor-based measuring technique is well protected in the housing. All the advantages of software-supported experiments and evaluation are offered by the GUNT software and the microprocessor. The connection to a PC is made by USB.
Learning Objectives / Experiments
- torsional testing of different materials up to specimen fracture
- recording the torque-angle of twist curve
- determination of the elastic range
FEATURES
Specification
[1] experimental unit for motorised torsion testing of different materials to fracture
[2] twisting velocities (clockwise and counterclockwise)
[3] worm drive motor, speed controller via frequency converter, 4 fixed speeds
[4] test rod material: steel, aluminium, brass
[5] test rod holder: 19mm AF hex socket
[6] test torque measurement using strain gauge measuring shaft
[7] angle of twist measured by incremental encoder
[8] measured value indication and operation via touch panel
[9] microprocessor-based measuring technique
[10] unit-specific GUNT software for data acquisition and operation via USB under Windows Vista or Windows 7
Technical Data
Test torgue: max. 200Nm
Twisting velocities: 50, 100, 200, 500°/min
Frequency converter with 4 fixed speeds
Motor output: 0,12kW, clockwise and counterclockwise
Test rod length: max. 300mm
Test rods, included:
3x steel
3x aluminium
3x brass
Measuring ranges
- torque: 0...199,9Nm
- angle of twist: 0...3200°, resolution: 0,1°
Dimensions and Weight
LxWxH: 1120x550x380mm
Weight: approx. 95kg Required for Operation 230V, 50/60Hz, 1 phase or 120V, 60Hz/CSA, 1 phase
Scope of Delivery
1 experimental unit
3 sets of test rods (steel, aluminium, brass)
1 GUNT software CD + USB cable
1 manual
