APPLICATION OF MR-FLUID IN VARIOUS FIELD

APPLICATION OF MR-FLUID IN VARIOUS FIELD

Mechanical engineering:

Magnetorheological dampers of various applications have been and continue to be developed. These dampers are mainly used in heavy industry with applications such as heavy motor damping, operator seat/cab damping in construction vehicles, and more

Military and defence:

The U.S. Army Research Office is currently funding research into using MR fluid to enhance body armour. In 2003, researchers stated they were five to ten years away from making the fluid bullet resistant. In addition, HMMWVs, and various other all-terrain vehicles employ dynamic MR shock absorbers and/or dampers.

Optics:

Magnetorheological finishing, a magnetorheological fluid-based optical polishing method, has proven to be highly precise. It was used in the construction of the Hubble Space Telescope's corrective lens.

Automotive:

General Motors and other automotive companies are seeking to develop a magnetorheological fluid based clutch system for push-button four-wheel-drive systems. This clutch system would use electromagnets to solidify the fluid which would lock the driveshaft into the drive train. Porsche has introduced magnetorheological engine mounts in the 2010 Porsche GT3 and GT2. At high engine revolutions, the magnetorheological engine mounts get stiffer to provide a more precise gearbox shifter feel by reducing the relative motion between the powertrain and chassis/body.

Aerospace:

Magnetorheological dampers are under development for use in military and commercial helicopter cockpit seats, as safety devices in the event of a crash. They would be used to decrease the shock delivered to a passenger's spinal column, thereby decreasing the rate of permanent injury during a crash.

Human prosthesis:

Magnetorheological dampers are utilized in semi-active human prosthetic legs. Much like those used in military and commercial helicopters, a damper in the prosthetic leg decreases the shock delivered to the patient leg when jumping, for example. This results in an increased Mobility and agility for the patient.