SB
Sachin Bargaje
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Test Rig for Multiaxial Fatigue test of Bush
Automobile
India
PROJECT TIMELINE
The importance of fatigue and deformation of materials under Multiaxial loads has gained significant recognition over the last quarter century. The advances in sophisticated materials testing equipment and digital computer systems have enabled many researchers to explore a multitude of testing techniques to assess the behaviour of materials and structural components. The result has been the evolution of several testing procedures and generation of indispensable multiaxial fatigue and deformation data on different types of materials. Our project focuses on the design of test rig characterizing multiaxial fatigue and deformation behaviours of rubber and composite materials. Elastomer bushings are critical components in vehicle suspension systems. The bushings are composed of hollow elastomer cylinder contained between inner and outer cylindrical steel sleeves. The sleeves connect components of automotive suspension systems, with forces being transmitted across the connection through the elastomer material, reducing shock and vibration. During use, the bushing sleeves undergo displacements and rotations relative to one another. This test rig is designed for rubber bush which is employed to cyclic Axial, Radial, Torsional and Conical loading. Load versus deformation characteristics are useful to predict the working parameters like deformation. This can also determine the fracture characteristics of the bush. Combination of Axial, Radial, Torsional and Conical load is the most versatile testing apparatus. This combination provides an advantage that principle stress and strain ratios are attainable and actual working load conditions can be applied to a bush. Thus, this will predict the endurance strength precisely.
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