Experimental Studies on Magnetorheological Fluids

Abstract

Magnetorheological (MR) fluids are a class of smart materials whose yield stress increases considerably in the presence of externally applied magnetic field. These fluids are composed of soft, spherical, magnetic particles whose diameters range from 0.01 to 20µm dispersed in an organic liquid. Magnetorheological effect and sedimentation stability are two important factors that make a good MR fluid. Experimental studies mostly concentrate on the synthesis of MR fluids with high yield stress and enhanced sedimentation stability. The focus of this study is to present a comprehensive review on the recent experimental studies, including rheological characterization and sedimentation stability of MR fluids.