Torsion Of Bars Apparatus- Engineering Lab Training Systems

Features Low cost effective teaching Self-contained Bench-mounted Direct application of torque and measurement of angle of twist Determination of modulus of rigidity for different materials 3 year warranty   Range of Experiments To measure the angle of twist produced by torsional loads for various specimens and verify that the relationship is linear. To determine the modulus of rigidity for specimens of various materials   Description Torsional loads are common in power transmission shafts, and in certain cases can also occur in structural members. It is thus very important that engineers understand the relationship between the torsional load applied to a particular beam and the angular twist produced. Also, engineers must understand how this relationship varies with the material from which the beam is made and its cross sectional polar moment of area. This apparatus allows these relationships to be investigated directly. Specimens are rigidly held in a clamp fixed to one end of the base frame of the apparatus. A short shaft mounted in the bearing has a three jaw chuck facing the clamp and a torsion head at the outward side. The torsion head and chuck are used to apply torsional loads to the specimen. A rotation scale and pointer can be attached to any point on the specimen's length to find the angle of twist of the specimen. Four specimens are provided as standard, namely : Mild steel rod 460 x 5mm dia. Brass rod 460 x 5 mm dia. Aluminium alloy rod 460 x 4.76mm dia. Nylon rod 460 x 6.35mm dia. This equipment is part of a range designed to both demonstrate and experimentally confirm basic engineering principles. Great care has been given to each item so as to provide wide experimental scope without unduly complicating or compromising the design. Each piece of apparatus is self-contained and compact. Setting up time is minimal, and all measurements are made with the simplest possible instrumentation, so that the student involvement is purely with the engineering principles being taught. A complete instruction manual is provided describing the apparatus, its application, experimental procedure and typical test results.