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Ilari Jonkkari, Seppo Syrjala
Evaluation of techniques for measuring the yield stress of a magnetorheological fluid
Appl. Rheol. 20:4 (2010) 45875 (7 pages)
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The yield stress of a magnetorheological fluid was measured as a function of magnetic flux density using different techniques.
The yield stress values were determined by extrapolating the experimental shear stress-shear rate data to zero shear
rate with the help of Bingham and Herschel-Bulkley models, and by using stress ramp and dynamic oscillatory tests.To obtain
the rheological data, the rotational rheometer equipped with a magnetic field generator and a plate-and-plate measuring
geometry was used. The different methods produced yield stress values which were in reasonable agreement with each
other.
► Cite this publication as follows:
Jonkkari I, Syrjala S: Evaluation of techniques for measuring the yield stress of a magnetorheological fluid, Appl. Rheol. 20 (2010) 45875.
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