Magnetorheological (MR) fluids change their physical properties when subjected to a magnetic field. As this change occurs, the specific values of the physical properties are a function of the fluid’s time-varying organization state. This results in a nonlinear, hysteretic, time-varying fluid property response to direct magnetic field excitation. Permeability, resistivity and permittivity changes of MR fluid were investigated and their suitability to indicate the organizational state of the fluid, and thus other transport properties, was determined. High sensitivity of permittivity and resistivity to particle organization and applied field was studied experimentally. The measurable effect of these material properties can be used to implement an MR fluid state sensor.
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e-mail: lloyd@egr.msu.edu
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April 2007
Technical Papers
Internal Organizational Measurement for Control of Magnetorheological Fluid Properties
John R. Lloyd,
John R. Lloyd
University Distinguished Professor
Department of Mechanical Engineering,
e-mail: lloyd@egr.msu.edu
Michigan State University
, East Lansing, MI 48824
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Miquel O. Hayesmichel,
Miquel O. Hayesmichel
Former Graduate Student
Department of Mechanical Engineering,
Michigan State University
, East Lansing, MI 48824
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Clark J. Radcliffe
Clark J. Radcliffe
Professor
Department of Mechanical Engineering,
Michigan State University
, East Lansing, MI 48824
Search for other works by this author on:
John R. Lloyd
University Distinguished Professor
Department of Mechanical Engineering,
Michigan State University
, East Lansing, MI 48824e-mail: lloyd@egr.msu.edu
Miquel O. Hayesmichel
Former Graduate Student
Department of Mechanical Engineering,
Michigan State University
, East Lansing, MI 48824
Clark J. Radcliffe
Professor
Department of Mechanical Engineering,
Michigan State University
, East Lansing, MI 48824J. Fluids Eng. Apr 2007, 129(4): 423-428 (6 pages)
Published Online: November 21, 2006
Article history
Received:
June 19, 2006
Revised:
November 21, 2006
Citation
Lloyd, J. R., Hayesmichel, M. O., and Radcliffe, C. J. (November 21, 2006). "Internal Organizational Measurement for Control of Magnetorheological Fluid Properties." ASME. J. Fluids Eng. April 2007; 129(4): 423–428. https://doi.org/10.1115/1.2436588
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