A Technological Review of Magnetorheological Dampers

Damper is part of suspension system where it is function to prevent noise, bumps, and vibrations. Most dampers are categorized in three categories which is active, semi-active and passive damper. Magnetorheological (MR) damper is categorized under semi-active damper. This type of damper utilize rheological fluids which is in normal state its free-flowing liquid but when magnetic field or current is applied, the fluid will change its viscosity. This paper review 8 MR damper which are hybrid with eddy current, multi-coil, rotary high torque, orifice hole, permanent magnet, serial-type with flow channel, extra grooves around the housing, and high speed adaptability. The research and development still on going to find the best means as possible to utilize rheological fluids in MR damper. This review is very important to the new researcher in order to find new way to further improve MR damper.