Citation

Mohamad, N. and Ubaidillah, and Mazlan, S. A. and Imaduddin, Fitrian and Choi, Seung Bok and Yazid, I. I. M. (2018) A comparative work on the magnetic field-dependent properties of plate-like and spherical iron particle-based magnetorheological grease. PLOS ONE, 13 (4). e0191795. ISSN 1932-6203

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Abstract

In this study, a new magnetorheological (MR) grease was made featuring plate-like carbonyl iron (CI) particles, and its magnetic field-dependent rheological properties were experimentally characterized. The plate-like CI particles were prepared through high-energy ball milling of spherical CI particles. Then, three different ratios of the CI particles in the MR grease, varying from 30 to 70 wt% were mixed by dispersing the plate-like CI particles into the grease medium with a mechanical stirrer. The magnetic field-dependent rheological properties of the plate-like CI particle-based MR grease were then investigated using a rheometer by changing the magnetic field intensity from 0 to 0.7 T at room temperature. The measurement was undertaken at two different modes, namely, a continuous shear mode and oscillation mode. It was shown that both the apparent viscosity and storage modulus of the MR grease were heavily dependent on the magnetic field intensity as well as the CI particle fraction. In addition, the differences in the yield stress and the MR effect between the proposed MR grease featuring the plate-like CI particles and the existing MR grease with the spherical CI particles were investigated and discussed in detail.

Item Type:	Article
Uncontrolled Keywords:	Magnetic fields
Subjects:	Q Science > QC Physics > QC501-766 Electricity and magnetism > QC750-766 Magnetism
Divisions:	Faculty of Engineering and Technology (FET)
Depositing User:	Ms Rosnani Abd Wahab
Date Deposited:	10 Nov 2020 16:48
Last Modified:	10 Nov 2020 16:48
URII:	http://shdl.mmu.edu.my/id/eprint/7302

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