Experimental detection of additional harmonics due to wear in journal bearings using excitation from a magnetic bearing.
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| Title: | Experimental detection of additional harmonics due to wear in journal bearings using excitation from a magnetic bearing. |
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| Authors: | Chasalevris, Athanasios1 chasalevris@sdy.tu-darmstadt.de, Dohnal, Fadi2 fadi.dohnal@power.alstom.com, Chatzisavvas, Ioannis1 chatzisavvas@sdy.tu-darmstadt.de |
| Source: | Tribology International. Mar2014, Vol. 71, p158-167. 10p. |
| Subjects: | Magnetic bearings, Mechanical wear, Rotors, Time-frequency analysis, Critical speeds (Engineering) |
| Abstract: | Abstract: An experimental rotor bearing system with an elastic rotor mounted in worn journal bearings is designed and investigated. The system is operated at run-up and run-down conditions and the response is analyzed with emphasis on passage through the first critical speed. Wear introduces additional sub- and super-harmonics in the response signal compared to the intact system. Time histories are analyzed in the time–frequency domain and bispectrum analysis is also performed in order to extract information on the influence of wear depth to these additional harmonics. Wear in one journal bearing is artificially produced and two cases of wear depth are investigated, one of 20% of bearing radial clearance and one of 40%. [Copyright &y& Elsevier] |
| Copyright of Tribology International is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 93591084 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Experimental detection of additional harmonics due to wear in journal bearings using excitation from a magnetic bearing. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Chasalevris%2C+Athanasios%22">Chasalevris, Athanasios</searchLink><relatesTo>1</relatesTo><i> chasalevris@sdy.tu-darmstadt.de</i><br /><searchLink fieldCode="AR" term="%22Dohnal%2C+Fadi%22">Dohnal, Fadi</searchLink><relatesTo>2</relatesTo><i> fadi.dohnal@power.alstom.com</i><br /><searchLink fieldCode="AR" term="%22Chatzisavvas%2C+Ioannis%22">Chatzisavvas, Ioannis</searchLink><relatesTo>1</relatesTo><i> chatzisavvas@sdy.tu-darmstadt.de</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Tribology+International%22">Tribology International</searchLink>. Mar2014, Vol. 71, p158-167. 10p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Magnetic+bearings%22">Magnetic bearings</searchLink><br /><searchLink fieldCode="DE" term="%22Mechanical+wear%22">Mechanical wear</searchLink><br /><searchLink fieldCode="DE" term="%22Rotors%22">Rotors</searchLink><br /><searchLink fieldCode="DE" term="%22Time-frequency+analysis%22">Time-frequency analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Critical+speeds+%28Engineering%29%22">Critical speeds (Engineering)</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Abstract: An experimental rotor bearing system with an elastic rotor mounted in worn journal bearings is designed and investigated. The system is operated at run-up and run-down conditions and the response is analyzed with emphasis on passage through the first critical speed. Wear introduces additional sub- and super-harmonics in the response signal compared to the intact system. Time histories are analyzed in the time–frequency domain and bispectrum analysis is also performed in order to extract information on the influence of wear depth to these additional harmonics. Wear in one journal bearing is artificially produced and two cases of wear depth are investigated, one of 20% of bearing radial clearance and one of 40%. [Copyright &y& Elsevier] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Tribology International is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.triboint.2013.12.002 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 10 StartPage: 158 Subjects: – SubjectFull: Magnetic bearings Type: general – SubjectFull: Mechanical wear Type: general – SubjectFull: Rotors Type: general – SubjectFull: Time-frequency analysis Type: general – SubjectFull: Critical speeds (Engineering) Type: general Titles: – TitleFull: Experimental detection of additional harmonics due to wear in journal bearings using excitation from a magnetic bearing. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Chasalevris, Athanasios – PersonEntity: Name: NameFull: Dohnal, Fadi – PersonEntity: Name: NameFull: Chatzisavvas, Ioannis IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 03 Text: Mar2014 Type: published Y: 2014 Identifiers: – Type: issn-print Value: 0301679X Numbering: – Type: volume Value: 71 Titles: – TitleFull: Tribology International Type: main |
| ResultId | 1 |
