Evaluation and quantification of friction using Ionic Liquids in small, self lubricating journal bearings
Four low viscosity Ionic Liquids were evaluated as lubricants in self lubricating porous journal bearings. Precise friction measurements performed under boundary conditions close to applications are presented under variation of the fluid gap and radial loading both in the domain of hydrodynamic and...
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| Veröffentlicht in: | Tribology international 2018-06, Vol.122, p.15-22 |
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| creator | Trachsel, Mathis Pittini, Raniero Dual, Jürg |
| description | Four low viscosity Ionic Liquids were evaluated as lubricants in self lubricating porous journal bearings. Precise friction measurements performed under boundary conditions close to applications are presented under variation of the fluid gap and radial loading both in the domain of hydrodynamic and mixed lubrication up to high speed and high shear rates. A comparison to a standard lubricant and verification using a Newtonian reference is given and lowest friction was found for the low viscosity Ionic Liquids at the speed of minimum friction. Applying a thermohydrodynamic friction model, Newtonian fluid behavior was found for the Ionic Liquids in the hydrodynamic domain of lubrication up to high shear rates.
•Application of Ionic Liquids as Lubricant in small self-lubricating porous journal bearings.•Thermohydrodynamic friction model using a lumped parameter thermal model for determination of lubricant temperature.•Detection of friction and displacement between shaft and bearing allow detecting whirling and its effects on friction. |
| doi_str_mv | 10.1016/j.triboint.2018.02.006 |
| format | Article |
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•Application of Ionic Liquids as Lubricant in small self-lubricating porous journal bearings.•Thermohydrodynamic friction model using a lumped parameter thermal model for determination of lubricant temperature.•Detection of friction and displacement between shaft and bearing allow detecting whirling and its effects on friction.</description><identifier>ISSN: 0301-679X</identifier><identifier>EISSN: 1879-2464</identifier><identifier>DOI: 10.1016/j.triboint.2018.02.006</identifier><language>eng</language><publisher>Kidlington: Elsevier Ltd</publisher><subject>Bearings ; Elastohydrodynamic lubrication ; Fluid dynamics ; Friction ; Hydrodynamic lubrication ; Ionic liquids ; Journal bearing ; Journal bearings ; Lubricants ; Lubrication ; Newtonian fluids ; Porous bearing ; Porous cement ; Self lubricating bearings ; Viscosity</subject><ispartof>Tribology international, 2018-06, Vol.122, p.15-22</ispartof><rights>2018 Elsevier Ltd</rights><rights>Copyright Elsevier BV Jun 2018</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c340t-c9513d264b29d5c4ff75b3516fc2a9de6ba0e169a4760fa5948dc6085bfe7c903</citedby><cites>FETCH-LOGICAL-c340t-c9513d264b29d5c4ff75b3516fc2a9de6ba0e169a4760fa5948dc6085bfe7c903</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.triboint.2018.02.006$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids></links><search><creatorcontrib>Trachsel, Mathis</creatorcontrib><creatorcontrib>Pittini, Raniero</creatorcontrib><creatorcontrib>Dual, Jürg</creatorcontrib><title>Evaluation and quantification of friction using Ionic Liquids in small, self lubricating journal bearings</title><title>Tribology international</title><description>Four low viscosity Ionic Liquids were evaluated as lubricants in self lubricating porous journal bearings. Precise friction measurements performed under boundary conditions close to applications are presented under variation of the fluid gap and radial loading both in the domain of hydrodynamic and mixed lubrication up to high speed and high shear rates. A comparison to a standard lubricant and verification using a Newtonian reference is given and lowest friction was found for the low viscosity Ionic Liquids at the speed of minimum friction. Applying a thermohydrodynamic friction model, Newtonian fluid behavior was found for the Ionic Liquids in the hydrodynamic domain of lubrication up to high shear rates.
•Application of Ionic Liquids as Lubricant in small self-lubricating porous journal bearings.•Thermohydrodynamic friction model using a lumped parameter thermal model for determination of lubricant temperature.•Detection of friction and displacement between shaft and bearing allow detecting whirling and its effects on friction.</description><subject>Bearings</subject><subject>Elastohydrodynamic lubrication</subject><subject>Fluid dynamics</subject><subject>Friction</subject><subject>Hydrodynamic lubrication</subject><subject>Ionic liquids</subject><subject>Journal bearing</subject><subject>Journal bearings</subject><subject>Lubricants</subject><subject>Lubrication</subject><subject>Newtonian fluids</subject><subject>Porous bearing</subject><subject>Porous cement</subject><subject>Self lubricating bearings</subject><subject>Viscosity</subject><issn>0301-679X</issn><issn>1879-2464</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNqFkN9KwzAUxoMoOKevIAFvbT1J07S5U8bUwcAbBe9CmiaS0qVb0g58G5_FJ7Nb9dqr84fv-zjnh9A1gZQA4XdN2gdXdc73KQVSpkBTAH6CZqQsREIZZ6doBhmQhBfi_RxdxNgAQMFEMUPNcq_aQfWu81j5Gu8G5XtnnZ5WncU2OH3sh-j8B1513mm8drvB1RE7j-NGte0tjqa131_tUIWjd1Q23RC8anFlVBjneInOrGqjufqtc_T2uHxdPCfrl6fV4mGd6IxBn2iRk6ymnFVU1Llm1hZ5leWEW02VqA2vFBjChWIFB6tywcpacyjzyppCC8jm6GbK3YZuN5jYy99LoqRQgKCMMTqq-KTSoYsxGCu3wW1U-JQE5IGrbOQfV3ngKoHKketovJ-MZvxh70yQUTvjtaldMLqXdef-i_gBsFuHww</recordid><startdate>201806</startdate><enddate>201806</enddate><creator>Trachsel, Mathis</creator><creator>Pittini, Raniero</creator><creator>Dual, Jürg</creator><general>Elsevier Ltd</general><general>Elsevier BV</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>7TB</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>F28</scope><scope>FR3</scope><scope>JG9</scope><scope>L7M</scope></search><sort><creationdate>201806</creationdate><title>Evaluation and quantification of friction using Ionic Liquids in small, self lubricating journal bearings</title><author>Trachsel, Mathis ; Pittini, Raniero ; Dual, Jürg</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c340t-c9513d264b29d5c4ff75b3516fc2a9de6ba0e169a4760fa5948dc6085bfe7c903</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Bearings</topic><topic>Elastohydrodynamic lubrication</topic><topic>Fluid dynamics</topic><topic>Friction</topic><topic>Hydrodynamic lubrication</topic><topic>Ionic liquids</topic><topic>Journal bearing</topic><topic>Journal bearings</topic><topic>Lubricants</topic><topic>Lubrication</topic><topic>Newtonian fluids</topic><topic>Porous bearing</topic><topic>Porous cement</topic><topic>Self lubricating bearings</topic><topic>Viscosity</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Trachsel, Mathis</creatorcontrib><creatorcontrib>Pittini, Raniero</creatorcontrib><creatorcontrib>Dual, Jürg</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>Engineering Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Tribology international</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Trachsel, Mathis</au><au>Pittini, Raniero</au><au>Dual, Jürg</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Evaluation and quantification of friction using Ionic Liquids in small, self lubricating journal bearings</atitle><jtitle>Tribology international</jtitle><date>2018-06</date><risdate>2018</risdate><volume>122</volume><spage>15</spage><epage>22</epage><pages>15-22</pages><issn>0301-679X</issn><eissn>1879-2464</eissn><abstract>Four low viscosity Ionic Liquids were evaluated as lubricants in self lubricating porous journal bearings. Precise friction measurements performed under boundary conditions close to applications are presented under variation of the fluid gap and radial loading both in the domain of hydrodynamic and mixed lubrication up to high speed and high shear rates. A comparison to a standard lubricant and verification using a Newtonian reference is given and lowest friction was found for the low viscosity Ionic Liquids at the speed of minimum friction. Applying a thermohydrodynamic friction model, Newtonian fluid behavior was found for the Ionic Liquids in the hydrodynamic domain of lubrication up to high shear rates.
•Application of Ionic Liquids as Lubricant in small self-lubricating porous journal bearings.•Thermohydrodynamic friction model using a lumped parameter thermal model for determination of lubricant temperature.•Detection of friction and displacement between shaft and bearing allow detecting whirling and its effects on friction.</abstract><cop>Kidlington</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.triboint.2018.02.006</doi><tpages>8</tpages></addata></record> |
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| language | eng |
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| source | Access via ScienceDirect (Elsevier) |
| subjects | Bearings Elastohydrodynamic lubrication Fluid dynamics Friction Hydrodynamic lubrication Ionic liquids Journal bearing Journal bearings Lubricants Lubrication Newtonian fluids Porous bearing Porous cement Self lubricating bearings Viscosity |
| title | Evaluation and quantification of friction using Ionic Liquids in small, self lubricating journal bearings |
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