Effect of pressure on the physical properties of magnetorheological fluids

Effect of pressure on the physical properties of magnetorheological fluids

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To date, several applications of magnetorheological (MR) fluids are present in the industrial world, nonetheless system requirements often needs better material properties.In technical literature a previous work shows that MR fluids exhibit a pressure dependency called squeeze strengthen effect.Since a lot of MR wiha 77891 fluid based devices are rotary devices, this paper investigates the behaviour of MR fluids under pressure when a rotation is applied to shear the fluid.

The system is designed in order to apply both the magnetic field and the pressure and follows a Design of Experiment approach.The experimental apparatus comprises a cylinder in which a piston is used both to apply the pressure and to shear the fluid.The magnetic circuit is designed to provide a nearly constant induction field in the MR fluid.

The experimental apparatus measures the torque as a function of the variables considered and the yield shear stress iphone 14 pro max price spectrum is computed.The analysis of the results shows that there is a positive interaction between magnetic field and pressure, which enhances the MR fluid performances more than twice.