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Magnetorheological brushes – Scarcely explored class of magnetic material

Anil Bastola, M Gannavarapu, L.A. Parry, M. Shrestha

Journal of Magnetism and Magnetic Materials, Volume: 572, Start page: 170603

Swansea University Author: Anil Bastola

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DOI (Published version): 10.1016/j.jmmm.2023.170603

Abstract

Magnetic materials such as magnetorheological (MR) fluids, and magnetorheological elastomers exhibit a broad change in their material properties, for example, viscosity and storage modulus in the presence of a magnetic field. Studies related to such MR fluid and elastomer materials are extensively a...

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Published in: Journal of Magnetism and Magnetic Materials
ISSN: 0304-8853
Published: Elsevier BV 2023
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URI: https://cronfa.swan.ac.uk/Record/cronfa65769
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spelling v2 65769 2024-03-05 Magnetorheological brushes – Scarcely explored class of magnetic material 6775d40c935b36b92058eb10d6454f1a Anil Bastola Anil Bastola true false 2024-03-05 MECH Magnetic materials such as magnetorheological (MR) fluids, and magnetorheological elastomers exhibit a broad change in their material properties, for example, viscosity and storage modulus in the presence of a magnetic field. Studies related to such MR fluid and elastomer materials are extensively available. The MR brush, meanwhile, is less frequently explored and understood. An MR brush is defined by the brush-like structures formed from chains of magnetic particles embedded within a carrier matrix, typically fluids or elastomers. In this study, we explore magnetorheological fluid (MRF) brush and magnetorheological elastomer (MRE) brush and investigate their magneto-mechanical properties. The investigation measured the stiffness and the MR response, defined as the change in properties in the presence of a magnetic field for MRF and MRE brushes. Further dependence of the magnetic effect on material and preparation parameters, mainly concentration of magnetic particles and curing flux density (for MRE brush) were investigated. The responsiveness of the brushes is compared using the Magnetorheological response index, as a proposed metric in this study. The results indicate that the MRE brush possess a greater absolute stiffness, but a lower MR response than that of the MRF brush. Both MRF and MRE brushes show an increase in the MR response with an increased concentration of magnetic fillers. MRE brush further demonstrate an enhanced MR response, which could be highly comparable to MRF brush coinciding with an increase in the magnetic flux density during the curing process. The fundamental investigation of both solid and fluid MR brushes in this study opens a new avenue in the area of magnetic materials. This new class of magnetically controllable materials could potentially be employed in applications where soft and tuneable bristle-like structures are desired. Journal Article Journal of Magnetism and Magnetic Materials 572 170603 Elsevier BV 0304-8853 Magnetorheological brush; Magnetorheological fluid; Magnetorheological elastomer; Magnetic field; Magnetoactive materials 15 4 2023 2023-04-15 10.1016/j.jmmm.2023.170603 COLLEGE NANME Mechanical Engineering COLLEGE CODE MECH Swansea University Another institution paid the OA fee 2024-04-25T17:13:20.3421191 2024-03-05T22:13:12.1178662 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering Anil Bastola 1 M Gannavarapu 2 L.A. Parry 3 M. Shrestha 4 65769__30156__72837ebfc7294ee69237e87b815de3fd.pdf 65769.VoR.pdf 2024-04-25T17:12:12.5614538 Output 8241814 application/pdf Version of Record true ©2023 The Author(s). This is an open access article under the CC BY-NC-ND license. true eng http://creativecommons.org/licenses/by-nc-nd/4.0/
title Magnetorheological brushes – Scarcely explored class of magnetic material
spellingShingle Magnetorheological brushes – Scarcely explored class of magnetic material
Anil Bastola
title_short Magnetorheological brushes – Scarcely explored class of magnetic material
title_full Magnetorheological brushes – Scarcely explored class of magnetic material
title_fullStr Magnetorheological brushes – Scarcely explored class of magnetic material
title_full_unstemmed Magnetorheological brushes – Scarcely explored class of magnetic material
title_sort Magnetorheological brushes – Scarcely explored class of magnetic material
author_id_str_mv 6775d40c935b36b92058eb10d6454f1a
author_id_fullname_str_mv 6775d40c935b36b92058eb10d6454f1a_***_Anil Bastola
author Anil Bastola
author2 Anil Bastola
M Gannavarapu
L.A. Parry
M. Shrestha
format Journal article
container_title Journal of Magnetism and Magnetic Materials
container_volume 572
container_start_page 170603
publishDate 2023
institution Swansea University
issn 0304-8853
doi_str_mv 10.1016/j.jmmm.2023.170603
publisher Elsevier BV
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering
document_store_str 1
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description Magnetic materials such as magnetorheological (MR) fluids, and magnetorheological elastomers exhibit a broad change in their material properties, for example, viscosity and storage modulus in the presence of a magnetic field. Studies related to such MR fluid and elastomer materials are extensively available. The MR brush, meanwhile, is less frequently explored and understood. An MR brush is defined by the brush-like structures formed from chains of magnetic particles embedded within a carrier matrix, typically fluids or elastomers. In this study, we explore magnetorheological fluid (MRF) brush and magnetorheological elastomer (MRE) brush and investigate their magneto-mechanical properties. The investigation measured the stiffness and the MR response, defined as the change in properties in the presence of a magnetic field for MRF and MRE brushes. Further dependence of the magnetic effect on material and preparation parameters, mainly concentration of magnetic particles and curing flux density (for MRE brush) were investigated. The responsiveness of the brushes is compared using the Magnetorheological response index, as a proposed metric in this study. The results indicate that the MRE brush possess a greater absolute stiffness, but a lower MR response than that of the MRF brush. Both MRF and MRE brushes show an increase in the MR response with an increased concentration of magnetic fillers. MRE brush further demonstrate an enhanced MR response, which could be highly comparable to MRF brush coinciding with an increase in the magnetic flux density during the curing process. The fundamental investigation of both solid and fluid MR brushes in this study opens a new avenue in the area of magnetic materials. This new class of magnetically controllable materials could potentially be employed in applications where soft and tuneable bristle-like structures are desired.
published_date 2023-04-15T17:13:19Z
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