Students can learn the torsion testing of various material test specimens to failure using the bench top instructional equipment. Rods of various lengths, diameters, and materials are utilized as specimens. On software, test torque, twist angle, and stiffness modulus are all measured. The measurement jig can be moved along the frame to adjust varied length specimens. Motorized torque application uses a worm gear and motor. The apparatus is used to fracture various materials under torsional stress. Measurements are made of test torque and twist angle. Rods of various lengths, diameters, and materials can be utilized as specimens. The dolly may slide to adjust to different length rods. The test rod holder is a commercially available socket. Square portions are used to support the base plate against twisting. A mechanism with a reduction gearing is used to apply the torque. The torque is provided as an electrical signal by a strain gauge that measures shaft twist, and the angle of twist is captured by an incremental encoder. The digital displays show both values. The housing provides adequate security for the microprocessor based measuring method. The software and the microprocessor provide all the benefits of experiments and evaluations backed by software. A USB connection is used to connect to a PC (optional).
Experiments:
- Torsional testing of different materials up to specimen fracture.
- Recording the torque-angle of twist curve.
- Determination of the elastic range.
- Determination of modulus of rigidity.
Specifications:
- Experimental unit for motorized torsion testing of different materials to fracture.
- Ploting the live graph on HMI (Optional).
- Worm drive operated with motor.
- Test rod material: mild gear steel, aluminium, brass.
- Test rod holder: set of jaws to grip specimens of different sizes.
- Test torque measurement using strain gauge measuring shaft.
- Angle of twist measured by incremental encoder.
