TRANSIENT BEHAVIOR OF THE MICROSTRUCTURE OF ELECTRORHEOLOGICAL FLUIDS IN SHEAR FLOW MODE

Autor: Antonio Celso Fonseca de Arruda, L. B. Pompeo Neto, S. Henley, Sheila L. Vieira, Masami Nakano, Frank E. Filisko
Rok vydání: 2001
Předmět:
Zdroj: International Journal of Modern Physics B. 15:695-703
ISSN: 1793-6578
0217-9792
DOI: 10.1142/s0217979201005179
Popis: It was reported that under the simultaneous stimulus of an electric field and shear, the particles in an ER fluid form lamellar formations in the direction of shear (adhered to one of the electrodes) which may be responsible for the ER activity more than the strength of the chains. In this way, it would be expected that the shear stress should change consistently with the morphology of the formations. In this work we studied the effect of shearing time, electric field strength and shear rate on the shear stress. We suggest that changes on shear stress with time are due to changes of the morphology of the lamellar formations.
Databáze: OpenAIRE