Author : Lijesh K.P. and Chiranjit Sarkar

Magnetorheological (MR) fluids alter their flow resistance as a function of the magnetic field. The variation in flow resistance is rapid and completely reversible and due to this MR fluids have been used in Braking applications. In the present paper, a MR Brake experimental setup, developed to evaluate the torque performance of MR brake, has been detailed. The measured torque values were compared with the estimated torque values and errors in the experimental values compared to theoretical torque values as a function of rotational speed have been presented. To investigate the reason for the variations, the vibration of MR disc was measured using proximity sensor. Based on the obtained results from proximity sensor the setup was modified. A comparison among the vibration signals measured on test setups (before modification and after modifications) has been presented.

Keywords: MR brake, roller bearing, vibration, torque.

Article published in International Journal of Current Engineering and Technology, Vol.5, No.2 (April-2015)