Journal of Failure Analysis and Prevention

, Volume 17, Issue 3, pp 563–570 | Cite as

Testing Device for Rheological Properties of Magnetorheological Fluid at High Shear Rate

Technical Article---Peer-Reviewed
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Abstract

In order to research the rheological property of MRF at high shear rate, a magnetorheological fluid (MRF) rheological property testing device based on shear mode, is developed. The accurate analytical expressions of MRF rheological parameters in terms of structural dimensions of testing device and shear rate in the parallel plate gap are derived, and the flow state of MRF is considered, which provides the theoretical foundation for testing the rheological property of MRF at high shear rate. The relationship between magnetic indication in the parallel plate gap and excitation electrical current is experimentally obtained. Some elements influencing testing are analyzed and eliminated. The device is used to test the rheological parameters of MRF, and the results show that the yield stress of MRF increases significantly as the magnetic flux density continues to increase, and shear rate has no obvious effect on it. The shear rates in designed device may exceed 3 × 104 s−1, which meets the special demands in MRF testing.

Keywords

Magnetorheological fluid Rheological properties Parallel plate model Shear rate Shear yield strength 

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Copyright information

© ASM International 2017

Authors and Affiliations

  1. 1.Automotive Engineering CollegeShanghai University of Engineering ScienceShanghaiChina
  2. 2.Statistics and Mathematics CollegeZhejiang Gongshang UniversityHangzhouChina

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