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

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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.

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Authors and Affiliations

  1. Automotive Engineering College, Shanghai University of Engineering Science, No. 333 Longteng Road, Songjiang District, Shanghai, 201620, China

    Lulu Kang & Yiping Luo

  2. Statistics and Mathematics College, Zhejiang Gongshang University, Hangzhou, 310018, China

    Yan Liu

Authors
  1. Lulu Kang
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  2. Yiping Luo
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  3. Yan Liu
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Correspondence to Lulu Kang.

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Kang, L., Luo, Y. & Liu, Y. Testing Device for Rheological Properties of Magnetorheological Fluid at High Shear Rate. J Fail. Anal. and Preven. 17, 563–570 (2017). https://doi.org/10.1007/s11668-017-0277-4

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  • DOI: https://doi.org/10.1007/s11668-017-0277-4

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