The effect of dilution oil in the torque performance of magnetorheological grease

Magnetorheological (MR) brake is a device that uses MR material to produce braking torque according to induced current. Even though MR Fluid (MRF) is widely used in MR brake as it has high response and is easy to fabricate, the sedimentation issue has degraded the performance of M R brake. Therefore...

Full description

Saved in:

Bibliographic Details
Main Author:	Abdul Kadir, Khairul Anwar
Format:	Thesis
Language:	English
Published:	2022
Subjects:	T Technology (General)
Online Access:	http://eprints.utm.my/id/eprint/99618/1/KhairulAnwarKadirMMJIIT2022.pdf
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my-utm-ep.99618
record_format	uketd_dc
spelling	my-utm-ep.996182023-06-08T08:10:25Z The effect of dilution oil in the torque performance of magnetorheological grease 2022 Abdul Kadir, Khairul Anwar T Technology (General) Magnetorheological (MR) brake is a device that uses MR material to produce braking torque according to induced current. Even though MR Fluid (MRF) is widely used in MR brake as it has high response and is easy to fabricate, the sedimentation issue has degraded the performance of M R brake. Therefore, MR grease (MRG) is introduced to overcome the drawbacks of MRF. Another important benefit of MRG is its self-sealing property which can solve the leaking problem in MRF. Despite the advantageous of no sedimentation of MRG, high viscosity of MRG lower the MR response to the current induced. Thus, the high viscosity of MRG can be reduced by adding dilution oil. Furthermore, the effect of the oil in diluted MRG in MR brake has not been investigated. Several samples of MRGs with different types of dilution oil were prepared by mixing grease and spherical carbonyl iron particles (CIP) using mechanical stirrers. The rheological properties in rotational mode were tested by using rheometer meanwhile the torque performance of MRGs in MR brake were evaluated by changing the current of 0A, 0.4A, 0.8A and 1.2A and fixed the angular speed. The result shows that MRG 3 has the lowest viscosity which is almost 93% reduction while the reduction of viscosity of MRG 2 was 25%. Yet, the torque performances generated by MRG 3 was the highest, 1.44 Nm, followed by MRG 2 and MRG 1. This phenomenon indicated that the improvement of torque performance was dependent on the viscosity of MRGs without the occurrence of sedimentation. Thus, the use of MRG with dilution oil as a substitution of MRF could reduce the sedimentation in MR device and improve the torque performance of MRGs in MR brake. 2022 Thesis http://eprints.utm.my/id/eprint/99618/ http://eprints.utm.my/id/eprint/99618/1/KhairulAnwarKadirMMJIIT2022.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:150855 masters Universiti Teknologi Malaysia Malaysia-Japan International Institute of Technology (MJIIT)
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	T Technology (General)
spellingShingle	T Technology (General) Abdul Kadir, Khairul Anwar The effect of dilution oil in the torque performance of magnetorheological grease
description	Magnetorheological (MR) brake is a device that uses MR material to produce braking torque according to induced current. Even though MR Fluid (MRF) is widely used in MR brake as it has high response and is easy to fabricate, the sedimentation issue has degraded the performance of M R brake. Therefore, MR grease (MRG) is introduced to overcome the drawbacks of MRF. Another important benefit of MRG is its self-sealing property which can solve the leaking problem in MRF. Despite the advantageous of no sedimentation of MRG, high viscosity of MRG lower the MR response to the current induced. Thus, the high viscosity of MRG can be reduced by adding dilution oil. Furthermore, the effect of the oil in diluted MRG in MR brake has not been investigated. Several samples of MRGs with different types of dilution oil were prepared by mixing grease and spherical carbonyl iron particles (CIP) using mechanical stirrers. The rheological properties in rotational mode were tested by using rheometer meanwhile the torque performance of MRGs in MR brake were evaluated by changing the current of 0A, 0.4A, 0.8A and 1.2A and fixed the angular speed. The result shows that MRG 3 has the lowest viscosity which is almost 93% reduction while the reduction of viscosity of MRG 2 was 25%. Yet, the torque performances generated by MRG 3 was the highest, 1.44 Nm, followed by MRG 2 and MRG 1. This phenomenon indicated that the improvement of torque performance was dependent on the viscosity of MRGs without the occurrence of sedimentation. Thus, the use of MRG with dilution oil as a substitution of MRF could reduce the sedimentation in MR device and improve the torque performance of MRGs in MR brake.
format	Thesis
qualification_level	Master's degree
author	Abdul Kadir, Khairul Anwar
author_facet	Abdul Kadir, Khairul Anwar
author_sort	Abdul Kadir, Khairul Anwar
title	The effect of dilution oil in the torque performance of magnetorheological grease
title_short	The effect of dilution oil in the torque performance of magnetorheological grease
title_full	The effect of dilution oil in the torque performance of magnetorheological grease
title_fullStr	The effect of dilution oil in the torque performance of magnetorheological grease
title_full_unstemmed	The effect of dilution oil in the torque performance of magnetorheological grease
title_sort	effect of dilution oil in the torque performance of magnetorheological grease
granting_institution	Universiti Teknologi Malaysia
granting_department	Malaysia-Japan International Institute of Technology (MJIIT)
publishDate	2022
url	http://eprints.utm.my/id/eprint/99618/1/KhairulAnwarKadirMMJIIT2022.pdf
_version_	1776100625343315968

The effect of dilution oil in the torque performance of magnetorheological grease

Similar Items