Capacitance measurement in a bearing

Document identifier: oai:DiVA.org:ltu-75999
Keyword: Engineering and Technology, Mechanical Engineering, Reliability and Maintenance, Teknik och teknologier, Maskinteknik, Tillförlitlighets- och kvalitetsteknik
Publication year: 2018
Abstract:

 A bearing arrangement includes a bearing having an inner race and an outer race and a plurality of rolling elements arranged between the inner and outer race such that the first race is rotatable relative the second race; bearing lubricant arranged within the bearing to lubricate the rolling elements. The bearing arrangement provides a first electrically conductive portion and a second electrically conductive portion, the first and second electrically conductive portion being electrically insulated and arranged such that at least a portion of the bearing lubricant is located between the first and second electrically conductive portion; and a capacitance meter having a first electrode connected to the first electrically conductive portion and a second electrode connected to the second electrically conductive portion, configured to measure a capacitance between the first ring and the second ring to determine a water content in the lubricant based on the measured capacitance.

Authors

Nicholas J. Dittes

Luleå tekniska universitet; Maskinelement
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    header: 
        identifier: oai:DiVA.org:ltu-75999
        datestamp: 2021-04-19T12:37:37Z
        setSpec: SwePub-ltu
    metadata: 
        mods: 
            @attributes: 
                version: 3.7
            recordInfo: 
                recordContentSource: ltu
                recordCreationDate: 2019-09-14
            identifier: 
                http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-75999
                us  9995344  (2018-06-12)
            titleInfo: 
                @attributes: 
                    lang: eng
                title: Capacitance measurement in a bearing
            abstract: 
 A bearing arrangement includes a bearing having an inner race and an outer race and a plurality of rolling elements arranged between the inner and outer race such that the first race is rotatable relative the second race; bearing lubricant arranged within the bearing to lubricate the rolling elements. The bearing arrangement provides a first electrically conductive portion and a second electrically conductive portion the first and second electrically conductive portion being electrically insulated and arranged such that at least a portion of the bearing lubricant is located between the first and second electrically conductive portion; and a capacitance meter having a first electrode connected to the first electrically conductive portion and a second electrode connected to the second electrically conductive portion configured to measure a capacitance between the first ring and the second ring to determine a water content in the lubricant based on the measured capacitance.

            subject: 
                    @attributes: 
                        lang: eng
                        authority: uka.se
                    topic: 
                        Engineering and Technology
                        Mechanical Engineering
                        Reliability and Maintenance
                    @attributes: 
                        lang: swe
                        authority: uka.se
                    topic: 
                        Teknik och teknologier
                        Maskinteknik
                        Tillförlitlighets- och kvalitetsteknik
            language: 
                languageTerm: eng
            genre: 
                intellectual-property/patent
                pop
            note: 
                Published
                1
            name: 
                @attributes: 
                    type: personal
                    authority: ltu
                namePart: 
                    Dittes
                    Nicholas J.
                    1987-
                role: 
                    roleTerm: aut
                affiliation: 
                    Luleå tekniska universitet
                    Maskinelement
                nameIdentifier: 
                    nicdit
                    0000-0002-4857-9475
            originInfo: 
                dateIssued: 2018
            location: 
                    url: https://patents.justia.com/patent/9995344
                    url: http://ltu.diva-portal.org/smash/get/diva2:1351324/FULLTEXT01.pdf
            accessCondition: gratis
            physicalDescription: 
                form: electronic
            typeOfResource: text