Performance Evaluation of SMA NiTi Helical Spring at Various Temperatures: R.B.Barjibhe, Dr. Bimlesh Kumar

Performance Evaluation of SMA NiTi Helical Spring at Various Temperatures

R.B.Barjibhe#, Dr. Bimlesh Kumar*

#Department of Mechanical Engineering, SSGBCOET,Bhusawal, Jalgaon, Maharashtra, India

*Principal,J.T.Mahajan College of Engineering, Faizpur, Maharashtra, India

Abstract: Shape memory alloys (SMAs) are one of the most widely used smart materials in many applications because of their shape memory effect property and pseudo elastic behavior. In this work, the behavior of NiTi SMA helical spring was evaluated at various temperatures. The unique

property of SMAs temperature dependent Young’s modulus has been used to change the stiffness of the spring. The experiments were carried out at different temperatures to determine the stiffness of SMA spring. The experimental results shows that SMA based helical springs stiffness increases with increase in temperature and deflection decreases with increase in temperature. The result

demonstrates SMA springs have great potential and can be used to control the vibrations.See More

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