Study of Magnetorheological Fluid and its Applications

This paper exemplifies the introduction to the Magnetorheological fluid and its key properties.Magnetorheological fluids (MR) is very promising intelligent material and it can rapidly be changed from a liquid state to a solid state in a magnetic field.MR fluids are materials that respond to an applied field with a dramatic change in their rheological behaviour.The essential characteristics of these fluids is their ability to reversibly change from a free flowing, linear, viscous liquid to a semisolid with governable yield strength in milliseconds when exposed to a magnetic field.Magnetorheological fluid technology has been successfully employed already in numerous low and high volume applications.Rheological properties are presented and discussed in following report.A structure based on MR fluid might be the next generation in design for products where power density, accuracy and dynamic performance are the key features.Aspects of this technology, direct shear mode, valve mode, are studied and application of valve mode in damper is discussed.Excellent features like fast response, simple interface between electrical power input and mechanical power output, and precise controllability make MR fluid technology attractive for many applications.