Torsion Testing Machine — MOE Lab Tender Details

Torsion Testing Machine

A bench-mounted machine to allow students to conduct torsion tests on different materials.

Experiments
Determination of modulus of rigidity (shear modulus) and yield strength (when used with the optional torsiometer)
Determination of upper and lower yield stresses for normalised steel specimens
Reversed torsion tests to demonstrate the Bauschinger effect and the effects of residual body and textural stresses on torsional strength
Comparison of the different elastic and plastic properties of materials (when used with the optional specimens)

Specifications
To include a Gearbox Strain Head and a Torque Measurement Head, mounted on a precision engineered sturdy box-section alloy base with adjustable feet
Gearbox to be a 60:1 ratio sealed gear and worm drive unit, capable of being moved and locked to any point along the frame
Torque to be applied by turning the handle of the gearbox
The Torque Measurement Head to have a moment arm and an industrial force sensor (strain-gauged load cell)
The torque shaft to be supported by bearings
The load cell must be able to connect to suitable data acquisition system
Maximum Torque 30 Nm
Angular Strain Measurement to be via Electronic Encoder and Digital Display
A clear removable guard to cover the specimen area for safety
To include a 12 V DC Digital Load Meter, range 30 Nm, and a 12 V DC Digital Angle Meter, range greater than 10,000 degrees
The Digital Angle Meter to display down to 0.01 degrees. If the VDAS Data Acquisition is used, the Angle to be displayed in radians with a resolution of 0.0001
Maximum specimen length: 750 mm
To be supplied with 2 sets of Drive Sockets – 3/16” Whitworth and 12 mm AF hexagonal (Qty 2 each)
To include a set of six 0.15% Carbon Steel specimens, 230M07 as drawn: nominally 143 mm total length, with 76.2 mm long gauge length, 6 mm diameter test section. Specimens ends to be nominally 12 mm across flats
To be compatible with a Versatile Data Acquisition System
Nett Dimensions and Weight: 1100 mm long x 400 mm depth x 350 mm height, 25kg