ABSTRACT
Magnetorheological Fluid (MRF) consists of micron sized iron particles dispersed in nonmagnetic viscous carrier fluid. MRF changes its apparent viscosity in the presence of external magnetic field. This rheological behavior of MRF categorizes it as a smart fluid. This rheological characteristic can be used to broaden working range of any fluid based mechanical systems like isolators, tuned vibration absorber, shock absorbers, clutches, engine mounts, alternators, power steering pumps, control valves, brakes, dampers etc. But it also has some issues which creates hurdles in its successful use in these applications. This article discusses the most challenging issues and methods used to overcome the same. It also includes characterization at different stages of MRF synthesis. At the end some MRF based applications are discussed.
