Electrorheological properties of micro balloons

Author

Kurinobu, Shunmro

Author_Institution

Dept. of Electron. & Electr. Eng., Fukuyama Univ., Japan

Volume

1

Issue

4

fYear

1995

Firstpage

36

Lastpage

40

Abstract

In this article, the relation between the densities of particles in electrorheological (ER) fluids and the electrorheological effects was investigated. Micro balloons, used as particles, were dispersed in silicon oil, which was used as the base fluid. Shear stresses as a function of shear rate were measured for ER fluids in the range of 0-1000 V/mm using a parallel disk-type rheometer, which was constructed. The shear stresses under AC fields were different from under DC fields for all samples. The shear stresses for the sample containing particles with densities much lower than that of the base fluid and the sample containing particles with densities slightly lower than that of the base fluid were lower than those for the sample containing particles with densities higher than that of the base fluid. The shear stress was the highest for the sample containing a mixture of these particles. The experimental results showed that the distribution of particles between electrodes was important to obtain high shear stress

Keywords

disperse systems; electrorheology; intelligent materials; stress analysis; AC fields; electrorheological fluids; micro balloons; parallel disk-type rheometer; particle densities; shear stresses; silicon oil; Aggregates; Electric fields; Electrodes; Erbium; Industry Applications Society; Petroleum; Sediments; Silicon; Stress measurement; Voltage;

fLanguage

English

Journal_Title

Industry Applications Magazine, IEEE

Publisher

ieee

ISSN

1077-2618

Type

jour

DOI

10.1109/2943.392462

Filename

392462