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Torsion of Rods and Tubes

Torsion of Rods and Tubes

Product Details:


Product Description

Description of Torsion of Rods and Tubes

The Torsion of Rods and Tubes comprises of a torsion head at one end and a fixed tailstock at the other, between which are held a variety of torsion specimens in three (3) jaw chucks. Fine rotational movement, in each direction, of each chuck allows accurate alignment of the Torsion of Rods and Tubes specimens. Each torsion specimen has profiled ends to match the clamping pattern of the chucks.

The Torsion of Rods and Tubes is mounted onto a bearing shaft, which is rotated using a thumb wheel and fine worm/wheel gearing mechanism integral to the torsion head. The thumb wheel and gearing applies known torque to the torsion specimen, whilst an integral load cell records the torque force being applied. An angular position sensor is also mounted at the torsion head end to monitor the angular ‘twist’ of the torsion specimens. The signals from the load cell and angular position sensor is fed directly into the Interface

Experimental Capabilities of Torsion of Rods and Tubes


  1. Verification of the classical theory of torsion in circular section rods and tubes
  2. Comparison of a tube and a similar tube with a 1mm slit along the length
  3. Comparison of the extended theory of torsion for a hollow square section member with experimental values
  4. Shear modulus
  5. Modulus of Rigidity, G
  6. Polar moment of inertia


Specification of Torsion of Rods and Tubes


  1. To allow the study of torsional behaviour for rods and tubes
  2. Torsion specimens held within a fixed and movable chuck
  3. To have torque applied to specimen using worm and wheel arrangement
  4. To have torque force output using load cell
  5. 5 torsion specimens including round aluminium rod, round aluminium tube, round aluminium tube with 1mm (approx.) side slit, square aluminium tube, round solid acrylic rod
  6. To have angular rotation output via angular position sensor
  7. Must be used with universal Frame and Stand
  8. Must be used with Interface
  9. Comprehensive instruction manual provided



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