Magnetorheological (MR) materials are magnetically active materials whose
physics or mechanical properties are often changed unceasingly, rapidly, and
reversibly by applying a magnetic field. Magnetorheological elastomers (MREs)
principally contain elastomers or rubbery materials and soft magnetic particles. MREs
are often referred to solid analogue of previously developed magnetorheological
fluids. The introduction of Petroleum based oil (PBO) as the additive has been
discussed to increase the dispersion of the magnetic particles, thus increased the MR
effect
