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Effect of nanomagnetic particle on mechanics performance of magneto-rheological fluid

ABSTRACT This paper presents an experimental method to investigate the effect of nanomagnetic particle on mechanics performance of magneto-rheological (MR) fluid, including the normal force and shear torque. Under different currents, the mechanics performance of a series of MR fluids with different quantities of nanomagnetic particles (0%, 4%, 7%, 12%, and 16% respectively) are measured by the plate-on-plate shearing test rig. The experimental results indicate that, with an increasing quality percentage of nanomagnetic particles, in a small range of currents (0–1.5 A), the mechanics performances are increasing, but their increment is no longer obvious when the current is above 1.5 A.