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Experimental results of shearing the MR fluid. (a) Shear stress under different constant shear rates and ramping current in the range of 0–4.5 A (0–1.2 T); (b) shear stress vs shear rate under different constant magnetic fields.
The shear stress and the normal stress of MR fluids. (a) Typical results in the current ramp test at a constant shear rate ; (b) typical results in the shear rate ramp test.
Typical shear stress and normal stress curves of an MR fluid with a particle volume fraction of 50% with shear rate ramp down from 100 to .
Critical shear rate for shear thickening of MR fluid.
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