AN EXPERIMENTAL INVESTIGATION OF IRON BASED MAGNETORHEOLOGICAL FLUID STABILITY AND RHEOLOGY

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KIYUMARSI EHSAN; JALALI AMIR; NOROUZI MAHMOOD; GHATEE MOJTABA

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Journal: Modares Mechanical Engineering Year:2016 | Volume:16 | Issue:2 Page(s): 301-308

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Title

AN EXPERIMENTAL INVESTIGATION OF IRON BASED MAGNETORHEOLOGICAL FLUID STABILITY AND RHEOLOGY

Author(s)

KIYUMARSI EHSAN | JALALI AMIR | NOROUZI MAHMOOD | GHATEE MOJTABA | Issue Writer Certificate

Keywords

STABILITYQ2

MAGNETORHEOLOGICAL FLUIDQ2

SEDIMENTATIONQ1

OFF-STATE VISCOSITYQ1

RHEOLOGYQ1

Abstract

Sedimentations and hard cakes formation of magnetic particles restrict MAGNETORHEOLOGICAL FLUID response to magnetic field and can cause the MR fluid containing device to collapse. Therefore, researches on MR fluids SEDIMENTATION reduction procedures and its effective factors are of considerable interest to improve magnetorheological applications. In this study, the effects of some parameters on typical MRF STABILITY were investigated. For this purpose, at first, MRF samples were constructed and the effects of various factors including carrier fluid type, particles concentrations and MRF mixing methods on its STABILITY were investigated and the importance of each factor was determined by Taguchi algorithm and the stable MRF sample for application of magnetorheological dampers was chosen. Next, by investigating the most stable MRF sample, based on the combination of STABILITY and OFF-STATE VISCOSITY factors, the relation for yield stress in various magnetic fields was presented. This relation was derived based on fitting the Herschel- Bulkley model with experimental data in conjunction with the existing relations of yield stress. As the results show, after 168 hours, SEDIMENTATION for the most stable sample is 7%. This sample consists of silicon oil and 70%wt iron powder which was prepared with mechanical stirrer. Adding 3%wt stearic acid to carrier fluid for increasing the STABILITY results in increasing the viscosity of carrier fluid up to 39 times. In spite of this, an acceptable MR effect is presented so that, in magnetic field of 146 kA/m the sample yield stress is 15KPa.

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APA: Copy

KIYUMARSI, EHSAN, JALALI, AMIR, NOROUZI, MAHMOOD, & GHATEE, MOJTABA. (2016). AN EXPERIMENTAL INVESTIGATION OF IRON BASED MAGNETORHEOLOGICAL FLUID STABILITY AND RHEOLOGY. MODARES MECHANICAL ENGINEERING, 16(2), 301-308. SID. https://sid.ir/paper/178822/en

Vancouver: Copy

KIYUMARSI EHSAN, JALALI AMIR, NOROUZI MAHMOOD, GHATEE MOJTABA. AN EXPERIMENTAL INVESTIGATION OF IRON BASED MAGNETORHEOLOGICAL FLUID STABILITY AND RHEOLOGY. MODARES MECHANICAL ENGINEERING[Internet]. 2016;16(2):301-308. Available from: https://sid.ir/paper/178822/en

IEEE: Copy

EHSAN KIYUMARSI, AMIR JALALI, MAHMOOD NOROUZI, and MOJTABA GHATEE, “AN EXPERIMENTAL INVESTIGATION OF IRON BASED MAGNETORHEOLOGICAL FLUID STABILITY AND RHEOLOGY,” MODARES MECHANICAL ENGINEERING, vol. 16, no. 2, pp. 301–308, 2016, [Online]. Available: https://sid.ir/paper/178822/en

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