Electrorheological and vibration-proof effects in suspension with plate-like aluminum oxide particles

• Published in: IEEE transactions on dielectrics and electrical insulation Vol. 17; no. 3; pp. 748 - 755
• Main Authors: Hanaoka, R, Kondo, T, Takata, S, Kanamaru, Y, Nakagami, Y
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.06.2010; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Aluminum oxide; Current density; de electric field; Density; Dispersion; Dispersions; ER fluid; ER response; Erbium; Fluid dynamics; Fluid flow; Fluids; hexagonal plate-like shape; Petroleum; Rheology; silicone oil; Silicones; single degree-of freedom system; Stability; Stress; vibration-proof effect; Viscosity; α-Al/ 2 O 3 particles
• ISSN: 1070-9878; 1558-4135
• DOI: 10.1109/TDEI.2010.5492247

Electrorheological (ER) properties and vibration-proof effect in the suspension dispersed the hexagonal plate-like aluminum oxide particles in silicone oil have been investigated experimentally. On the rheological properties taken with the static and dynamic methods, it is shown that the suspensions are shifted from Newtonian behavior to Bingham behavior by the applied dc electric field. The shear stress depends on the viscosity of dispersion medium (silicone oil) and the particle size. A low current density is an advantage of this ER fluid. The dispersive stability of particles in the test ER fluids has also been examined for the dispersion mediums with different kinematic viscosities. The morphological effect of particles on the ER response is discussed qualitatively. The effect of ER fluid on the vibration control is examined using a single degree-of-freedom (SDOF) system.