AMAD specializes in the development of magneto-rheological (MR) materials and integrated controllable systems. Examples of MR materials are MR fluids (MRFs) and MR elastomers (MREs). The functionality of these materials is based on magnetic interaction of particles when subjected to an external magnetic field. MR materials have high controllable properties which result in ultra fast response times to an applied external magnetic field.

MRFs viscosity can change 1000 times in a few milliseconds in the presence of a magnetic field. As the magnetic field strength increases, the MR fluid's apparent viscosity increases. The rheological change is entirely reversible. MRFs are ideal working fluids for controllable dampers and hydraulic circuits with flow controlling by-pass valves. A simple electromagnet provides the means to vary the magnetic field strength for a particular MRF device. There are no mechanical valves, pumps, or moving parts required. MRFs are mainly used in linear dampers, rotary dampers, brakes, clutches, seismic shock mitigation, and engine mounts.

MREs can undergo up to 60% change in stiffness in less than one millisecond under a magnetic field. As the magnetic field strength increases, the MREs’ storage and loss moduli increase. The rheological change is entirely reversible. The MREs are suitable for adjustable or tunable shock and vibration isolators, such as, engine mounts, vehicle bushings, sensitive equipment mounts and snubbers. A simple electromagnet provides the means to vary the magnetic field strength for a particular MRE device. A MRE controllable system is fail-safe, that is, in the event of an electrical system failure the isolator will retain a passive elastomeric performance. MREs are mainly used as controllable vibration isolators and engine mounts.