TORSION TESTING MACHINE (30 Nm)

The Torsion Testing Machine is a compact machine, ideal
for classroom demonstrations and for safe use by small
groups of students. Its frame is a rigid, precisionengineered
alloy box-section, supported at each end by
adjustable feet. It carries two main parts:
– a ?strain head? at one end, and
– a torque reaction and measurement system at the other.
The specimens fit between the strain head and the torque
reaction and measurement system.
The strain head is a 60:1 worm drive reduction gearbox,
mounted on a platform. The platform can be moved and
locked to any point along the frame. To apply torque,
students turn a handle at the input of the gearbox. A
keyway allows the output shaft of the gearbox to slide
freely along its length. This allows for any change in length
of the specimen during the tests and for easy insertion of
specimens.
An accurate encoder measures the strain (angular
movement) at the strain head. The encoder has a digital
display and can connect to TecQuipment?s Versatile Data
Acquisition System (VDAS?).
The torque reaction and measurement system includes a
torsion shaft supported by bearings. The shaft reacts on a
strain-gauged load cell. A digital display shows the force
measured by the load cell. The display can connect to
VDAS?.
Hexagonal drive sockets hold the test specimens. The
sockets fit on the gearbox output shaft and the torsion
shaft. TecQuipment supplies two different sizes of drive
sockets.
For safety, a clear guard protects the user when they
perform destructive tests on standard-size specimens.
For increased strain measurement accuracy, use the
optional Torsiometer (SM1001a). The increased accuracy is
useful to help find the modulus of rigidity (shear modulus).
The torsiometer has a digital display of angular movement,
calibrated to the strain angle (in radians). The torsiometer
can connect to VDAS?.
For quick and reliable tests, TecQuipment can supply the
optional VDAS? which gives accurate real-time data
capture, monitoring and display, calculation and charting
of all important readings on a computer.