Effect of temperature on rheological properties of lithium-based magnetorheological grease

Wang, H; Li, Y; Zhang, G; Wang, J

Effect of temperature on rheological properties of lithium-based magnetorheological grease

Wang, H

Li, Y

Zhang, G Wang, J

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Publication Type:: Journal Article
Citation:: Smart Materials and Structures, 2019, 28 (3)
Issue Date:: 2019-02-01

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Field	Value	Language
dc.contributor.author	Wang, H https://orcid.org/0000-0002-6969-6259	en_US
dc.contributor.author	Li, Y https://orcid.org/0000-0002-6720-8493	en_US
dc.contributor.author	Zhang, G	en_US
dc.contributor.author	Wang, J	en_US
dc.date.issued	2019-02-01	en_US
dc.identifier.citation	Smart Materials and Structures, 2019, 28 (3)	en_US
dc.identifier.issn	0964-1726	en_US
dc.identifier.uri	http://hdl.handle.net/10453/138593
dc.description.abstract	© 2019 IOP Publishing Ltd. This paper investigates the impact of temperature on the rheological properties of magnetorheological (MR) grease containing carbonyl iron suspended in lithium-based grease Lithium-based MR grease with 70% weight fraction of carbonyl iron is firstly prepared by mechanical mixing. The apparent viscosity and shear stress as a function of shear rate under different temperatures and magnetic field strengths are measured and discussed. It is found that the influence of temperature on apparent viscosity reduces with the increase of magnetic field strength. The dynamic properties of MR grease are obtained under oscillatory shear test. The influences of strain amplitude, driving frequency and magnetic field on the dynamic properties of MR grease at different temperature are discussed. The results demonstrate that the enhancement of temperature leads to the increase of storage modulus and the reduction of the loss factor. Microstructural variation of grease matrix at different temperature is proposed as an explanation of the rheological changes of MR grease.	en_US
dc.relation.ispartof	Smart Materials and Structures	en_US
dc.relation.isbasedon	10.1088/1361-665X/aaf32b	en_US
dc.subject.classification	Materials	en_US
dc.title	Effect of temperature on rheological properties of lithium-based magnetorheological grease	en_US
dc.type	Journal Article
utslib.citation.volume	3	en_US
utslib.citation.volume	28	en_US
utslib.for	0912 Materials Engineering	en_US
utslib.for	0913 Mechanical Engineering	en_US
utslib.for	03 Chemical Sciences	en_US
utslib.for	09 Engineering	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CBI - Centre for Built Infrastructure
utslib.copyright.status	open_access
pubs.issue	3	en_US
pubs.publication-status	Published	en_US
pubs.volume	28	en_US

Abstract:

© 2019 IOP Publishing Ltd. This paper investigates the impact of temperature on the rheological properties of magnetorheological (MR) grease containing carbonyl iron suspended in lithium-based grease Lithium-based MR grease with 70% weight fraction of carbonyl iron is firstly prepared by mechanical mixing. The apparent viscosity and shear stress as a function of shear rate under different temperatures and magnetic field strengths are measured and discussed. It is found that the influence of temperature on apparent viscosity reduces with the increase of magnetic field strength. The dynamic properties of MR grease are obtained under oscillatory shear test. The influences of strain amplitude, driving frequency and magnetic field on the dynamic properties of MR grease at different temperature are discussed. The results demonstrate that the enhancement of temperature leads to the increase of storage modulus and the reduction of the loss factor. Microstructural variation of grease matrix at different temperature is proposed as an explanation of the rheological changes of MR grease.

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http://hdl.handle.net/10453/138593