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A manifestation of non-hydrodynamic factors in steady-state conditions of friction / Tareq M.A. Al-quraan

This study considers the mechanisms of forming the thickness of the lubricant layer with mineral and synthetic oils under a gradual increase in the rolling speed. The determined regularities reveal non-Newtonian properties acquired by the oils at high contact loads and low rolling rates. An increase...

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Main Author: M.A. Al-quraan, Tareq
Format: Article
Language:English
Published: Faculty of Mechanical Engineering Universiti Teknologi MARA (UiTM) 2017
Subjects:
Microfluidics and microfluidic devices
Chemical engineering
Online Access:http://ir.uitm.edu.my/id/eprint/21124/1/AJ_Tareq%20M.A.%20Al-quraan%20%20JME%2017.pdf
http://ir.uitm.edu.my/id/eprint/21124/
https://jmeche.uitm.edu.my/
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spelling my.uitm.ir.211242018-10-17T07:03:19Z http://ir.uitm.edu.my/id/eprint/21124/ A manifestation of non-hydrodynamic factors in steady-state conditions of friction / Tareq M.A. Al-quraan M.A. Al-quraan, Tareq Microfluidics and microfluidic devices Chemical engineering This study considers the mechanisms of forming the thickness of the lubricant layer with mineral and synthetic oils under a gradual increase in the rolling speed. The determined regularities reveal non-Newtonian properties acquired by the oils at high contact loads and low rolling rates. An increase in the speed and temperature is found to restore Newtonian properties of the oils. The kinetics of forming the lubricating layer can depend on the effective viscosity of oils in contact, although this parameter does not always correlate with viscosity of oils in atmospheric conditions. A delayed impact of pressure on an effective viscosity is determined at a stronger manifestation of viscoelastic properties of oils. The study reveals the existence of threshold changes in the effective viscosity at high contact loads due to the model of a free volume between the components of the lubricant. Faculty of Mechanical Engineering Universiti Teknologi MARA (UiTM) 2017 Article PeerReviewed text en http://ir.uitm.edu.my/id/eprint/21124/1/AJ_Tareq%20M.A.%20Al-quraan%20%20JME%2017.pdf M.A. Al-quraan, Tareq (2017) A manifestation of non-hydrodynamic factors in steady-state conditions of friction / Tareq M.A. Al-quraan. Journal of Mechanical Engineering (JMechE), 14 (2). pp. 109-124. ISSN 1823-5514 ; 2550-164X https://jmeche.uitm.edu.my/
institution Universiti Teknologi Mara
building Tun Abdul Razak Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Mara
content_source UiTM Institutional Repository
url_provider http://ir.uitm.edu.my/
language English
topic Microfluidics and microfluidic devices
Chemical engineering
spellingShingle Microfluidics and microfluidic devices
Chemical engineering
M.A. Al-quraan, Tareq
A manifestation of non-hydrodynamic factors in steady-state conditions of friction / Tareq M.A. Al-quraan
description This study considers the mechanisms of forming the thickness of the lubricant layer with mineral and synthetic oils under a gradual increase in the rolling speed. The determined regularities reveal non-Newtonian properties acquired by the oils at high contact loads and low rolling rates. An increase in the speed and temperature is found to restore Newtonian properties of the oils. The kinetics of forming the lubricating layer can depend on the effective viscosity of oils in contact, although this parameter does not always correlate with viscosity of oils in atmospheric conditions. A delayed impact of pressure on an effective viscosity is determined at a stronger manifestation of viscoelastic properties of oils. The study reveals the existence of threshold changes in the effective viscosity at high contact loads due to the model of a free volume between the components of the lubricant.
format Article
author M.A. Al-quraan, Tareq
author_facet M.A. Al-quraan, Tareq
author_sort M.A. Al-quraan, Tareq
title A manifestation of non-hydrodynamic factors in steady-state conditions of friction / Tareq M.A. Al-quraan
title_short A manifestation of non-hydrodynamic factors in steady-state conditions of friction / Tareq M.A. Al-quraan
title_full A manifestation of non-hydrodynamic factors in steady-state conditions of friction / Tareq M.A. Al-quraan
title_fullStr A manifestation of non-hydrodynamic factors in steady-state conditions of friction / Tareq M.A. Al-quraan
title_full_unstemmed A manifestation of non-hydrodynamic factors in steady-state conditions of friction / Tareq M.A. Al-quraan
title_sort manifestation of non-hydrodynamic factors in steady-state conditions of friction / tareq m.a. al-quraan
publisher Faculty of Mechanical Engineering Universiti Teknologi MARA (UiTM)
publishDate 2017
url http://ir.uitm.edu.my/id/eprint/21124/1/AJ_Tareq%20M.A.%20Al-quraan%20%20JME%2017.pdf
http://ir.uitm.edu.my/id/eprint/21124/
https://jmeche.uitm.edu.my/
_version_ 1685649425261658112
score 13.251813

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