Frequency dependence of metal-particle/insulating oil electrorheological fluids
- 9 October 1995
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 67 (15) , 2147-2148
- https://doi.org/10.1063/1.114748
Abstract
The frequency dependence of the shear stress of metal‐particle/insulating oil electrorheological (ER) fluids under an acelectric field has been studied. The results show that the shear stress of the metal‐particle ER fluid under a fixed electric field increases with increasing frequency and then tends to a saturated value at higher frequency. The shear stress at 103 Hz is much larger than that under a dc field. The transition of the shear stress shifts to higher frequency when the conductivity of the fluid is larger. The measurements are consistent with the theoretical model proposed by Davis [J. Appl. Phys. 73, 680 (1993)].Keywords
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