Magnetorheological brushes – scarcely explored class of magnetic material
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...
Saved in:
Main Authors: | , , , |
---|---|
Other Authors: | |
Format: | Article |
Language: | English |
Published: |
2023
|
Subjects: | |
Online Access: | https://hdl.handle.net/10356/172450 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Institution: | Nanyang Technological University |
Language: | English |
id |
sg-ntu-dr.10356-172450 |
---|---|
record_format |
dspace |
spelling |
sg-ntu-dr.10356-1724502023-12-16T16:48:00Z Magnetorheological brushes – scarcely explored class of magnetic material Bastola, Anil Kumar Gannavarapu, M. Parry, L. A. Shrestha, Milan School of Mechanical and Aerospace Engineering Continental-NTU Corporate Laboratory Engineering::Mechanical engineering Magnetorheological Brush Magnetorheological Fluid 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 version 2023-12-11T02:42:31Z 2023-12-11T02:42:31Z 2023 Journal Article Bastola, A. K., Gannavarapu, M., Parry, L. A. & Shrestha, M. (2023). Magnetorheological brushes – scarcely explored class of magnetic material. Journal of Magnetism and Magnetic Materials, 572, 170603-. https://dx.doi.org/10.1016/j.jmmm.2023.170603 0304-8853 https://hdl.handle.net/10356/172450 10.1016/j.jmmm.2023.170603 2-s2.0-85150195387 572 170603 en Journal of Magnetism and Magnetic Materials © 2023 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/bync-nd/4.0/). application/pdf |
institution |
Nanyang Technological University |
building |
NTU Library |
continent |
Asia |
country |
Singapore Singapore |
content_provider |
NTU Library |
collection |
DR-NTU |
language |
English |
topic |
Engineering::Mechanical engineering Magnetorheological Brush Magnetorheological Fluid |
spellingShingle |
Engineering::Mechanical engineering Magnetorheological Brush Magnetorheological Fluid Bastola, Anil Kumar Gannavarapu, M. Parry, L. A. Shrestha, Milan Magnetorheological brushes – scarcely explored class of magnetic material |
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. |
author2 |
School of Mechanical and Aerospace Engineering |
author_facet |
School of Mechanical and Aerospace Engineering Bastola, Anil Kumar Gannavarapu, M. Parry, L. A. Shrestha, Milan |
format |
Article |
author |
Bastola, Anil Kumar Gannavarapu, M. Parry, L. A. Shrestha, Milan |
author_sort |
Bastola, Anil Kumar |
title |
Magnetorheological brushes – scarcely explored class of magnetic material |
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 |
publishDate |
2023 |
url |
https://hdl.handle.net/10356/172450 |
_version_ |
1787136650246094848 |