Table 2 Properties of typical MR fluids
From: A review of challenges and solutions in the preparation and use of magnetorheological fluids
Property | MR fluid |
|---|---|
Suspended particle | Iron (carbonyl/electrolytic), ferrites |
Particle size | 3–10 μm |
Suspending fluid | Nonpolar and polar liquids |
Required field | 0.2–0.5 T |
Off state viscosity (Pa s) | 0.1–1 |
Density (g/cc) | 3–5 |
Reaction time | 15–25 ms |
Max. yield stress | 50–100 kPa |
Working temperature range | − 50 to 150 °C |
Device excitation | Electromagnets or permanent magnets |