Thermal Conductivity Enhancement and Sedimentation Reduction of Magnetorheological Fluids with Nano-Sized Cu and Al Additives

This work presents enhanced material characteristics of smart magnetorheological (MR) fluids by utilizing nano-sized metal particles. Especially, enhancement of thermal conductivity and reduction of sedimentation rate of MR fluids those are crucial properties for applications of MR fluids are focuss...

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Main Authors:	M. S. A., Rahim, Izwan, Ismail, Choi, S. B., Azmi, W. H., S. N., Aqida
Format:	Article
Language:	English
Published:	IOP Publishing 2017
Subjects:	TA Engineering (General). Civil engineering (General) TJ Mechanical engineering and machinery
Online Access:	http://umpir.ump.edu.my/id/eprint/19908/ http://umpir.ump.edu.my/id/eprint/19908/ http://umpir.ump.edu.my/id/eprint/19908/ http://umpir.ump.edu.my/id/eprint/19908/1/fkm-2017-salleh-Thermal%20conductivity%20enhancement%20and1.pdf

id	ump-19908
recordtype	eprints
spelling	ump-199082018-01-30T02:34:39Z http://umpir.ump.edu.my/id/eprint/19908/ Thermal Conductivity Enhancement and Sedimentation Reduction of Magnetorheological Fluids with Nano-Sized Cu and Al Additives M. S. A., Rahim Izwan, Ismail Choi, S. B. Azmi, W. H. S. N., Aqida TA Engineering (General). Civil engineering (General) TJ Mechanical engineering and machinery This work presents enhanced material characteristics of smart magnetorheological (MR) fluids by utilizing nano-sized metal particles. Especially, enhancement of thermal conductivity and reduction of sedimentation rate of MR fluids those are crucial properties for applications of MR fluids are focussed. In order to achieve this goal, a series of MR fluid samples are prepared using carbonyl iron particles (CIP) and hydraulic oil, and adding nano-sized particles of copper (Cu), aluminium (Al), and fumed silica (SiO 2 ). Subsequently, the thermal conductivity is measured by the thermal property analyser and the sedimentation of MR fluids is measured using glass tubes without any excitation for a long time. The measured thermal conductivity is then compared with theoretical models such as Maxwell model at various CIP concentrations. In addition, in order to show the effectiveness of MR fluids synthesized in this work, the thermal conductivity of MRF-132DG which is commercially available is measured and compared with those of the prepared samples. It is observed that the thermal conductivity of the samples is much better than MRF-132DG showing the 148 increment with 40 vol of the magnetic particles. It is also observed that the sedimentation rate of the prepared MR fluid samples is less than that of MRF-132DG showing 9 reduction with 40 vol of the magnetic particles. The mixture optimized sample with high conductivity and low sedimentation was also obtained. The magnetization of the sample recorded an enhancement of 70.5 when compared to MRF-132DG. Furthermore, the shear yield stress of the sample were also increased with and without the influence of magnetic field. IOP Publishing 2017-10-04 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/19908/1/fkm-2017-salleh-Thermal%20conductivity%20enhancement%20and1.pdf M. S. A., Rahim and Izwan, Ismail and Choi, S. B. and Azmi, W. H. and S. N., Aqida (2017) Thermal Conductivity Enhancement and Sedimentation Reduction of Magnetorheological Fluids with Nano-Sized Cu and Al Additives. Smart Materials and Structures, 26 (115009). pp. 1-11. ISSN 0964-1726 https://doi.org/10.1088/1361-665X/aa8d8f doi: 10.1088/1361-665X/aa8d8f
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	TA Engineering (General). Civil engineering (General) TJ Mechanical engineering and machinery
spellingShingle	TA Engineering (General). Civil engineering (General) TJ Mechanical engineering and machinery M. S. A., Rahim Izwan, Ismail Choi, S. B. Azmi, W. H. S. N., Aqida Thermal Conductivity Enhancement and Sedimentation Reduction of Magnetorheological Fluids with Nano-Sized Cu and Al Additives
description	This work presents enhanced material characteristics of smart magnetorheological (MR) fluids by utilizing nano-sized metal particles. Especially, enhancement of thermal conductivity and reduction of sedimentation rate of MR fluids those are crucial properties for applications of MR fluids are focussed. In order to achieve this goal, a series of MR fluid samples are prepared using carbonyl iron particles (CIP) and hydraulic oil, and adding nano-sized particles of copper (Cu), aluminium (Al), and fumed silica (SiO 2 ). Subsequently, the thermal conductivity is measured by the thermal property analyser and the sedimentation of MR fluids is measured using glass tubes without any excitation for a long time. The measured thermal conductivity is then compared with theoretical models such as Maxwell model at various CIP concentrations. In addition, in order to show the effectiveness of MR fluids synthesized in this work, the thermal conductivity of MRF-132DG which is commercially available is measured and compared with those of the prepared samples. It is observed that the thermal conductivity of the samples is much better than MRF-132DG showing the 148 increment with 40 vol of the magnetic particles. It is also observed that the sedimentation rate of the prepared MR fluid samples is less than that of MRF-132DG showing 9 reduction with 40 vol of the magnetic particles. The mixture optimized sample with high conductivity and low sedimentation was also obtained. The magnetization of the sample recorded an enhancement of 70.5 when compared to MRF-132DG. Furthermore, the shear yield stress of the sample were also increased with and without the influence of magnetic field.
format	Article
author	M. S. A., Rahim Izwan, Ismail Choi, S. B. Azmi, W. H. S. N., Aqida
author_facet	M. S. A., Rahim Izwan, Ismail Choi, S. B. Azmi, W. H. S. N., Aqida
author_sort	M. S. A., Rahim
title	Thermal Conductivity Enhancement and Sedimentation Reduction of Magnetorheological Fluids with Nano-Sized Cu and Al Additives
title_short	Thermal Conductivity Enhancement and Sedimentation Reduction of Magnetorheological Fluids with Nano-Sized Cu and Al Additives
title_full	Thermal Conductivity Enhancement and Sedimentation Reduction of Magnetorheological Fluids with Nano-Sized Cu and Al Additives
title_fullStr	Thermal Conductivity Enhancement and Sedimentation Reduction of Magnetorheological Fluids with Nano-Sized Cu and Al Additives
title_full_unstemmed	Thermal Conductivity Enhancement and Sedimentation Reduction of Magnetorheological Fluids with Nano-Sized Cu and Al Additives
title_sort	thermal conductivity enhancement and sedimentation reduction of magnetorheological fluids with nano-sized cu and al additives
publisher	IOP Publishing
publishDate	2017
url	http://umpir.ump.edu.my/id/eprint/19908/ http://umpir.ump.edu.my/id/eprint/19908/ http://umpir.ump.edu.my/id/eprint/19908/ http://umpir.ump.edu.my/id/eprint/19908/1/fkm-2017-salleh-Thermal%20conductivity%20enhancement%20and1.pdf
first_indexed	2023-09-18T22:28:31Z
last_indexed	2023-09-18T22:28:31Z
_version_	1777416129036156928

Thermal Conductivity Enhancement and Sedimentation Reduction of Magnetorheological Fluids with Nano-Sized Cu and Al Additives

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