Torsional Vibration Apparatus

he Torsional Vibration Apparatus is a compact, bench-top system designed for comprehensive study of torsion and torsional vibration phenomena. The unit is built on a rigid, profiled aluminium base with adjustable levelling feet, supporting four vertical chuck pillars. Each pillar incorporates a precision-mounted central shaft with a chuck for securing torsion specimens. Integrated with each chuck is a large disc of differing mass and moment of inertia, allowing the configuration of specimens with up to three masses for a wide range of experimental conditions.

Torsional excitation is introduced to the specimen using an electronically speed-controlled exciter, managed directly from the main control unit. To vary end conditions, a fifth pillar provides a fixed-end chuck that rigidly clamps the specimen when required.

The apparatus also includes a manual torsion system for static investigations. A cord is wrapped around one of the discs, and known loads are applied using a hanger and calibrated weights. By recording angular displacement for incremental loads, students can determine the modulus of rigidity of the specimen material.

Integrated oscillation sensors on each mass pillar measure vibration amplitude, and the control unit conditions these signals for use with the supplied digital oscilloscope, enabling detailed vibration analysis. The system also incorporates an Inductive Threaded Barrel Proximity Sensor, enhancing the precision and reliability of vibration detection and measurement.

This product comes supplied with the Matrix Data Acquisition box, which is a universal interface providing a single platform for reliable data capture.

It is included as standard with all relevant products, ensuring every system is ready for digital data acquisition out of the box.​

Direct integration with Matrix Flowcode enables real-time acquisition, analysis, and visualisation without extra hardware or software.​

It captures key mechanical test data including:​

• Elongation and extension​
• Deformation (strain)​
• Applied force / load​
• Torque, angle, and fatigue cycle data