Influence of steel fibres on friction behaviours with respect to speed, pressure and temperature

Purpose - This study aims to investigate the effect of different volume percentage (Vol.%) of steel fibre on the pressure, surface temperature and speed sensitivity behaviour during braking process as known brake effectiveness and to propose the best steel fibre Vol.% in the formulation. Design/meth...

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Published in:Industrial Lubrication and Tribology
Main Author: Jaafar T.R.; Ismail N.I.; Ismail M.F.; Othman E.A.
Format: Article
Language:English
Published: Emerald Group Publishing Ltd. 2017
Online Access:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85020880745&doi=10.1108%2fILT-09-2016-0230&partnerID=40&md5=b71061e7847851595a7dbe3b28df31d2
id 2-s2.0-85020880745
spelling 2-s2.0-85020880745
Jaafar T.R.; Ismail N.I.; Ismail M.F.; Othman E.A.
Influence of steel fibres on friction behaviours with respect to speed, pressure and temperature
2017
Industrial Lubrication and Tribology
69
3
10.1108/ILT-09-2016-0230
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85020880745&doi=10.1108%2fILT-09-2016-0230&partnerID=40&md5=b71061e7847851595a7dbe3b28df31d2
Purpose - This study aims to investigate the effect of different volume percentage (Vol.%) of steel fibre on the pressure, surface temperature and speed sensitivity behaviour during braking process as known brake effectiveness and to propose the best steel fibre Vol.% in the formulation. Design/methodology/approach - Three brake pads composed of three different steel fibre volume percentages were fabricated through powder metallurgy route. Selecting one sample as based formulations, steel fibre (Vol.%) was decreased and increased by 50 per cent in the other two samples, respectively. The other ingredients are proportionally increased and decreased accordingly to the base formulation. The samples were tested for determining their hardness, porosity and coefficient of friction (COF) using Rockwell hardness tester, hot bath and brake inertia dynamometer, respectively. Findings - Test results indicated that Sample T1 which composed of 9 Vol.% of steel fibre had the lowest COF and was sensitive to applied pressure, surface temperature and speed. The samples which composed of 18 and 27 Vol.% of steel fibre were having the same trend of COF and were sensitive to surface temperature and speed. Sample T which composed of 18 Vol.% of steel fibre had lower brake pad and disc lost as compared to Sample T2 which composed of 27 Vol.%. Mechanical properties did not show any significant correlation with COF sensitivity with temperature, speed and pressure. Originality/value - The sample with 18 Vol.% of steel fibre was found to be the best formulation which produced acceptable COF; less sensitive to temperature, pressure and speed during braking process; and better wear resistance of brake pad as well as the rotor. © 2017 Emerald Publishing Limited.
Emerald Group Publishing Ltd.
368792
English
Article

author Jaafar T.R.; Ismail N.I.; Ismail M.F.; Othman E.A.
spellingShingle Jaafar T.R.; Ismail N.I.; Ismail M.F.; Othman E.A.
Influence of steel fibres on friction behaviours with respect to speed, pressure and temperature
author_facet Jaafar T.R.; Ismail N.I.; Ismail M.F.; Othman E.A.
author_sort Jaafar T.R.; Ismail N.I.; Ismail M.F.; Othman E.A.
title Influence of steel fibres on friction behaviours with respect to speed, pressure and temperature
title_short Influence of steel fibres on friction behaviours with respect to speed, pressure and temperature
title_full Influence of steel fibres on friction behaviours with respect to speed, pressure and temperature
title_fullStr Influence of steel fibres on friction behaviours with respect to speed, pressure and temperature
title_full_unstemmed Influence of steel fibres on friction behaviours with respect to speed, pressure and temperature
title_sort Influence of steel fibres on friction behaviours with respect to speed, pressure and temperature
publishDate 2017
container_title Industrial Lubrication and Tribology
container_volume 69
container_issue 3
doi_str_mv 10.1108/ILT-09-2016-0230
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85020880745&doi=10.1108%2fILT-09-2016-0230&partnerID=40&md5=b71061e7847851595a7dbe3b28df31d2
description Purpose - This study aims to investigate the effect of different volume percentage (Vol.%) of steel fibre on the pressure, surface temperature and speed sensitivity behaviour during braking process as known brake effectiveness and to propose the best steel fibre Vol.% in the formulation. Design/methodology/approach - Three brake pads composed of three different steel fibre volume percentages were fabricated through powder metallurgy route. Selecting one sample as based formulations, steel fibre (Vol.%) was decreased and increased by 50 per cent in the other two samples, respectively. The other ingredients are proportionally increased and decreased accordingly to the base formulation. The samples were tested for determining their hardness, porosity and coefficient of friction (COF) using Rockwell hardness tester, hot bath and brake inertia dynamometer, respectively. Findings - Test results indicated that Sample T1 which composed of 9 Vol.% of steel fibre had the lowest COF and was sensitive to applied pressure, surface temperature and speed. The samples which composed of 18 and 27 Vol.% of steel fibre were having the same trend of COF and were sensitive to surface temperature and speed. Sample T which composed of 18 Vol.% of steel fibre had lower brake pad and disc lost as compared to Sample T2 which composed of 27 Vol.%. Mechanical properties did not show any significant correlation with COF sensitivity with temperature, speed and pressure. Originality/value - The sample with 18 Vol.% of steel fibre was found to be the best formulation which produced acceptable COF; less sensitive to temperature, pressure and speed during braking process; and better wear resistance of brake pad as well as the rotor. © 2017 Emerald Publishing Limited.
publisher Emerald Group Publishing Ltd.
issn 368792
language English
format Article
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