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Viscoelastic Properties of Magneto- and Electro-Rheological Fluids

Lord Corporation, Thomas Lord R&D Center, Cary, NC 27511

J. David Carlson

Lord Corporation, Thomas Lord R&D Center, Cary, NC 27511

Donald A. Nixon

Lord Corporation, Thomas Lord R&D Center, Cary, NC 27511

This paper examines the transition area between elastic and viscous behavior for a conventional electro-rheological (ER) fluid and a state-of-the-art magneto-rheological (MR) fluid through the use of oscillatory rheometry techniques. A comparison between the yield behavior (strain and stress) measured for these two different types of controllable fluids is presented. The data obtained for MR fluids represents the initial characterization of the pre-yield properties exhibited by this type of material. Finally, a recommendation as to a key area for future R&D is highlighted.

Journal of Intelligent Material Systems and Structures, Vol. 5, No. 6, 772-775 (1994)
DOI: 10.1177/1045389X9400500607


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