Free and Forced Torsional Vibration System with Digital Interface (SMT-TM-45)

This apparatus is designed to study the principles of free and damped torsional vibration, allowing students to determine the natural frequency of a rotary system and analyze how factors like torsional stiffness, rotating mass, and damping influence vibrational behavior. It provides a practical method for observing how vibrations occur along axis of shaft and how they can be controlled. The unit features a set of three torsion bars with different diameters and two mass discs of varying sizes, which can be positioned along the shaft using an adjustable chuck to alter the inertia of system. An open, oil-filled damper is included to introduce and regulate viscous damping. This setup allows for the experimental investigation of both undamped natural frequencies and the decay of vibrations under damped conditions. Its primary application is in mechanical engineering education for teaching vibration analysis and dynamics. The key benefit is the hands-on investigation of torsional resonance and damping effects, enabling students to understand the causes of shaft and gear failures in machinery and the importance of vibration control in the design of powertrains and rotating equipment.