Rheological Characterization of Magnetorheological Finishing Fluid

Advanced Micromachining

“…Holding of abrasive particles in the CIP chain structure depends on the rheological properties (yield stress and viscosity) of the MR fluid under a magnetic field [24]. Stiffness of the MR fluid under a magnetic field is measured by yield stress.…”

Physical characteristics of magnetorheological suspensions and their applications

“…In this model, the constant post-yield plastic viscosity in the Bingham model is replaced with a low power model that is dependent on the shear rate. In addition, the Casson model has also been adopted to fit the shear stress as a function of the shear rate of various MR fluids [86][87][88].…”

Some aspects of fabrication of micro devices by electrochemical micromachining (ECMM) and its finishing by magnetorheological fluid

“…The assembly of magnet and magnet fixture is called as a carrier wheel. The magnetic field stiffens the MR fluid ribbon depending upon the magnetic field strength [15]. Rotation of the carrier wheel drags the MR fluid through the converging gap between the workpiece and the carrier wheel.…”

“…Significant shear and normal forces are developed due to the interaction between MR fluid and workpiece surface when the MR fluid ribbon flows through the converging gap. MR-finishing conditions of micro nozzle [14] and b magnified view of the finishing zone [15] (F n -normal force, F ttangential force) are given in Table 2. The average particle size of CIPs and abrasive (cerium oxide) is 2 and 1.8 μm, respectively.…”