Performance of Silicon Oil-Based Magneto-rheological Fluids Used for MR Dampers: An Experimental Approach

被引：0
作者：
Bakr M. [1 ]
Eldomuaty A. [1 ]
Mansour T. [1 ]
Hammad H. [2 ]
Dawood M.M. [1 ]
Nabil T. [1 ]
机构：
[1] Mechanical Engineering Department, Faculty of Engineering, Suez Canal University, Ismailia
[2] Military Technical College, Cairo
来源：
Micro and Nanosystems | 2022年 / 14卷 / 01期
关键词：
dampers; magnetic properties; magneto-rheological fluids; MR fluid; rheological properties; Smart materials;
D O I：
10.2174/1876402913666210525100816
中图分类号：
学科分类号：
摘要：
Aim: The aim of this work was the preparation of the model Magneto-Rheological (MR) fluids to be used under the effect of an applied magnetic field operated under very low power requirement for the purpose of vibration reduction in automotive damper. Background: Magneto-rheological fluids are non-Newtonian fluids, which consist of magnetic particles scattered in a base liquid – a matter that can change its characteristics when applying the magnetic field. From the previous researches, magneto-rheological fluids have different properties according to the preparation accuracy, ingredients, particle size and shape, type of carrier fluids, and stabilizer. Also, the response of magneto-rheological fluids to the magnetic flux varied. Methods: A specimen of MR fluid is prepared using four different dynamic viscosities base fluids. Silicone oil JETTA (50 mpa.s, 100 mpa.s, 150 mpa.s, and 200 mpa.s) is mixed with high purity spherical shape particles of Carbonyl Iron (CI). ABRO liquid white lithium grease is added to the specimen, and its effect is determined. Results: The presence of additives has no effect on the magnetic behavior, but it increases the dynamic viscosity, especially in the presence of the external magnetic field, which is considered as a stabilizing factor. Conclusion: Adding the white lithium grease as a stabilizer delays the sedimentation of the prepared sample by 1023%. The lowest sample in sedimentation rate has the highest viscosity, which satisfies 2.7% in 24 hours, but it shows a negative effect on the magneto-rheological properties, which leads to unstable viscosity readings due to MR fluid agglutination. Working temperature is a critical parameter that can affect the behavior of MR fluid; the viscosity of MR fluid under the effect of the magnetic field is inversely proportional to the working temperature. Sample DELTA is the most promising for the application in automotive dampers, which is used to decrease vehicle vibration. © 2022 Bentham Science Publishers.
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页码：83 / 90
页数：7
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