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A Pocket-Textured Surface for Improving the Tribological Properties of Point Contact under Starved Lubrication

This paper reports a novel pocket-textured surface for improving the tribological properties of point contact under starved lubrication by possibly storing and releasing oil, and homogenizing the surface contact pressure. The ball-on-disk experimental results confirmed the coefficient of friction (C...

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Detalles Bibliográficos
Autores principales: Wang, Wei, Zhao, Wenhan, Liu, Yang, Zhang, Hui, Hua, Meng, Dong, Guangneng, Tam, Hon-Yuen, Chin, Kwai-Sang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8038587/
https://www.ncbi.nlm.nih.gov/pubmed/33916343
http://dx.doi.org/10.3390/ma14071789
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author Wang, Wei
Zhao, Wenhan
Liu, Yang
Zhang, Hui
Hua, Meng
Dong, Guangneng
Tam, Hon-Yuen
Chin, Kwai-Sang
author_facet Wang, Wei
Zhao, Wenhan
Liu, Yang
Zhang, Hui
Hua, Meng
Dong, Guangneng
Tam, Hon-Yuen
Chin, Kwai-Sang
author_sort Wang, Wei
collection PubMed
description This paper reports a novel pocket-textured surface for improving the tribological properties of point contact under starved lubrication by possibly storing and releasing oil, and homogenizing the surface contact pressure. The ball-on-disk experimental results confirmed the coefficient of friction (COF) and wear reduction effect of such pocket-texturing. The maximum reduction rate was 40% compared with a flat surface under the same operating conditions. Analyses on experimental results attributed the oil storage effect and enhanced the secondary lubrication effect within the starved lubrication state, to become the main mechanism. In addition, the plate elasticity and the Hertzian contact principles were employed to estimate the pressure and the load acting on the surface. The experimental results and numerical analysis substantiated the design of pocket-textured surface, making it likely to enlarge about 50% of contact surface and to reduce 90% of equivalent stress in comparison to those of conventional surfaces.
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spelling pubmed-80385872021-04-12 A Pocket-Textured Surface for Improving the Tribological Properties of Point Contact under Starved Lubrication Wang, Wei Zhao, Wenhan Liu, Yang Zhang, Hui Hua, Meng Dong, Guangneng Tam, Hon-Yuen Chin, Kwai-Sang Materials (Basel) Article This paper reports a novel pocket-textured surface for improving the tribological properties of point contact under starved lubrication by possibly storing and releasing oil, and homogenizing the surface contact pressure. The ball-on-disk experimental results confirmed the coefficient of friction (COF) and wear reduction effect of such pocket-texturing. The maximum reduction rate was 40% compared with a flat surface under the same operating conditions. Analyses on experimental results attributed the oil storage effect and enhanced the secondary lubrication effect within the starved lubrication state, to become the main mechanism. In addition, the plate elasticity and the Hertzian contact principles were employed to estimate the pressure and the load acting on the surface. The experimental results and numerical analysis substantiated the design of pocket-textured surface, making it likely to enlarge about 50% of contact surface and to reduce 90% of equivalent stress in comparison to those of conventional surfaces. MDPI 2021-04-05 /pmc/articles/PMC8038587/ /pubmed/33916343 http://dx.doi.org/10.3390/ma14071789 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Wang, Wei
Zhao, Wenhan
Liu, Yang
Zhang, Hui
Hua, Meng
Dong, Guangneng
Tam, Hon-Yuen
Chin, Kwai-Sang
A Pocket-Textured Surface for Improving the Tribological Properties of Point Contact under Starved Lubrication
title A Pocket-Textured Surface for Improving the Tribological Properties of Point Contact under Starved Lubrication
title_full A Pocket-Textured Surface for Improving the Tribological Properties of Point Contact under Starved Lubrication
title_fullStr A Pocket-Textured Surface for Improving the Tribological Properties of Point Contact under Starved Lubrication
title_full_unstemmed A Pocket-Textured Surface for Improving the Tribological Properties of Point Contact under Starved Lubrication
title_short A Pocket-Textured Surface for Improving the Tribological Properties of Point Contact under Starved Lubrication
title_sort pocket-textured surface for improving the tribological properties of point contact under starved lubrication
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8038587/
https://www.ncbi.nlm.nih.gov/pubmed/33916343
http://dx.doi.org/10.3390/ma14071789
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