A smart friction control strategy enabled by CO2 absorption and desorption

Abstract Intelligent control of friction is an attractive but challenging topic and it has rarely been investigated for full size engineering applications. In this work, it is instigated if it would be possible to adjust friction by controlling viscosity in a lubricated contact. By exploiting the ab...

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Autores principales:	Jing Hua, Marcus Björling, Mattias Grahn, Roland Larsson, Yijun Shi
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2019
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/1c6ef7894d6b41c6bb380184f4f013e7
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id	oai:doaj.org-article:1c6ef7894d6b41c6bb380184f4f013e7
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spelling	oai:doaj.org-article:1c6ef7894d6b41c6bb380184f4f013e72021-12-02T15:09:44ZA smart friction control strategy enabled by CO2 absorption and desorption10.1038/s41598-019-49864-w2045-2322https://doaj.org/article/1c6ef7894d6b41c6bb380184f4f013e72019-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-019-49864-whttps://doaj.org/toc/2045-2322Abstract Intelligent control of friction is an attractive but challenging topic and it has rarely been investigated for full size engineering applications. In this work, it is instigated if it would be possible to adjust friction by controlling viscosity in a lubricated contact. By exploiting the ability to adjust the viscosity of the switchable ionic liquids, 1,8-Diazabicyclo (5.4.0) undec-7-ene (DBU)/ glycerol mixture via the addition of CO2, the friction could be controlled in the elastohydrodynamic lubrication (EHL) regime. The friction decreased with increasing the amount of CO2 to the lubricant and increased after partial releasing CO2. As CO2 was absorbed by the liquid, the viscosity of the liquid increased which resulted in that the film thickness increased. At the same time the pressure-viscosity coefficient decreased with the addition of CO2. When CO2 was released again the friction increased and it was thus possible to control friction by adding or removing CO2.Jing HuaMarcus BjörlingMattias GrahnRoland LarssonYijun ShiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 9, Iss 1, Pp 1-8 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Jing Hua Marcus Björling Mattias Grahn Roland Larsson Yijun Shi A smart friction control strategy enabled by CO2 absorption and desorption
description	Abstract Intelligent control of friction is an attractive but challenging topic and it has rarely been investigated for full size engineering applications. In this work, it is instigated if it would be possible to adjust friction by controlling viscosity in a lubricated contact. By exploiting the ability to adjust the viscosity of the switchable ionic liquids, 1,8-Diazabicyclo (5.4.0) undec-7-ene (DBU)/ glycerol mixture via the addition of CO2, the friction could be controlled in the elastohydrodynamic lubrication (EHL) regime. The friction decreased with increasing the amount of CO2 to the lubricant and increased after partial releasing CO2. As CO2 was absorbed by the liquid, the viscosity of the liquid increased which resulted in that the film thickness increased. At the same time the pressure-viscosity coefficient decreased with the addition of CO2. When CO2 was released again the friction increased and it was thus possible to control friction by adding or removing CO2.
format	article
author	Jing Hua Marcus Björling Mattias Grahn Roland Larsson Yijun Shi
author_facet	Jing Hua Marcus Björling Mattias Grahn Roland Larsson Yijun Shi
author_sort	Jing Hua
title	A smart friction control strategy enabled by CO2 absorption and desorption
title_short	A smart friction control strategy enabled by CO2 absorption and desorption
title_full	A smart friction control strategy enabled by CO2 absorption and desorption
title_fullStr	A smart friction control strategy enabled by CO2 absorption and desorption
title_full_unstemmed	A smart friction control strategy enabled by CO2 absorption and desorption
title_sort	smart friction control strategy enabled by co2 absorption and desorption
publisher	Nature Portfolio
publishDate	2019
url	https://doaj.org/article/1c6ef7894d6b41c6bb380184f4f013e7
work_keys_str_mv	AT jinghua asmartfrictioncontrolstrategyenabledbyco2absorptionanddesorption AT marcusbjorling asmartfrictioncontrolstrategyenabledbyco2absorptionanddesorption AT mattiasgrahn asmartfrictioncontrolstrategyenabledbyco2absorptionanddesorption AT rolandlarsson asmartfrictioncontrolstrategyenabledbyco2absorptionanddesorption AT yijunshi asmartfrictioncontrolstrategyenabledbyco2absorptionanddesorption AT jinghua smartfrictioncontrolstrategyenabledbyco2absorptionanddesorption AT marcusbjorling smartfrictioncontrolstrategyenabledbyco2absorptionanddesorption AT mattiasgrahn smartfrictioncontrolstrategyenabledbyco2absorptionanddesorption AT rolandlarsson smartfrictioncontrolstrategyenabledbyco2absorptionanddesorption AT yijunshi smartfrictioncontrolstrategyenabledbyco2absorptionanddesorption
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A smart friction control strategy enabled by CO2 absorption and desorption

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