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Ultrasound enabled simultaneous measurement of coating wear depth and lubricant film thickness in a sliding bearing.

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Title: Ultrasound enabled simultaneous measurement of coating wear depth and lubricant film thickness in a sliding bearing.
Authors: Dou, Pan1,2 (AUTHOR), Yang, Peiping3 (AUTHOR), Zheng, Peng1 (AUTHOR), Jia, Yaping1 (AUTHOR), Wu, Tonghai1 (AUTHOR) tonghai.wu@mail.xjtu.edu.cn, Wang, Shuo1 (AUTHOR), Yu, Min2 (AUTHOR)
Source: Measurement (02632241). Jan2025, Vol. 240, pN.PAG-N.PAG. 1p.
Subjects: Ultrasonic measurement, Lead, Thickness measurement, Rotating machinery, Filmstrips
Abstract: • It is found that the amplitude of the incident signal remains unchanged while the phase changes with the wear depth. • A method for simultaneous measurement of both oil film thickness and coating wear is proposed. • A three-stage procedure is established for monitoring oil film thickness and coating wear simultaneously. Sliding bearings, serving as critical supporting components in rotating machinery, often work by riding on an ultra-thin oil film. The rupture of this oil film can cause wear of the soft coating on the bearing and even lead to catastrophic failures. This paper introduces a novel ultrasonic reflection-based approach to simultaneously measure both lubricant film thickness and coating wear depth. Through an analysis of the ultrasonic wave propagation in a worn bearing, it is observed that the echo waveform remains independent of wear depth but correlates with changes in the time of flight back to the transducer. Given this, the captured time or phase shift between the reflected and incident waves, together with the reduction in the wave amplitude, enables a simultaneous calculation of both oil film thickness and coating wear depth. The efficacy of the proposed method is validated through acoustic simulations and experiments with varied coating roughness. [ABSTRACT FROM AUTHOR]
Copyright of Measurement (02632241) 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
Header DbId: egs
DbLabel: Engineering Source
An: 180773200
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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Items – Name: Title
  Label: Title
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  Data: Ultrasound enabled simultaneous measurement of coating wear depth and lubricant film thickness in a sliding bearing.
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  Data: <searchLink fieldCode="AR" term="%22Dou%2C+Pan%22">Dou, Pan</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yang%2C+Peiping%22">Yang, Peiping</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zheng%2C+Peng%22">Zheng, Peng</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Jia%2C+Yaping%22">Jia, Yaping</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wu%2C+Tonghai%22">Wu, Tonghai</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> tonghai.wu@mail.xjtu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Wang%2C+Shuo%22">Wang, Shuo</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yu%2C+Min%22">Yu, Min</searchLink><relatesTo>2</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Measurement+%2802632241%29%22">Measurement (02632241)</searchLink>. Jan2025, Vol. 240, pN.PAG-N.PAG. 1p.
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  Data: <searchLink fieldCode="DE" term="%22Ultrasonic+measurement%22">Ultrasonic measurement</searchLink><br /><searchLink fieldCode="DE" term="%22Lead%22">Lead</searchLink><br /><searchLink fieldCode="DE" term="%22Thickness+measurement%22">Thickness measurement</searchLink><br /><searchLink fieldCode="DE" term="%22Rotating+machinery%22">Rotating machinery</searchLink><br /><searchLink fieldCode="DE" term="%22Filmstrips%22">Filmstrips</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: • It is found that the amplitude of the incident signal remains unchanged while the phase changes with the wear depth. • A method for simultaneous measurement of both oil film thickness and coating wear is proposed. • A three-stage procedure is established for monitoring oil film thickness and coating wear simultaneously. Sliding bearings, serving as critical supporting components in rotating machinery, often work by riding on an ultra-thin oil film. The rupture of this oil film can cause wear of the soft coating on the bearing and even lead to catastrophic failures. This paper introduces a novel ultrasonic reflection-based approach to simultaneously measure both lubricant film thickness and coating wear depth. Through an analysis of the ultrasonic wave propagation in a worn bearing, it is observed that the echo waveform remains independent of wear depth but correlates with changes in the time of flight back to the transducer. Given this, the captured time or phase shift between the reflected and incident waves, together with the reduction in the wave amplitude, enables a simultaneous calculation of both oil film thickness and coating wear depth. The efficacy of the proposed method is validated through acoustic simulations and experiments with varied coating roughness. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Measurement (02632241) 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:
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    Identifiers:
      – Type: doi
        Value: 10.1016/j.measurement.2024.115602
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      – Code: eng
        Text: English
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        PageCount: 1
        StartPage: N.PAG
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      – SubjectFull: Ultrasonic measurement
        Type: general
      – SubjectFull: Lead
        Type: general
      – SubjectFull: Thickness measurement
        Type: general
      – SubjectFull: Rotating machinery
        Type: general
      – SubjectFull: Filmstrips
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      – TitleFull: Ultrasound enabled simultaneous measurement of coating wear depth and lubricant film thickness in a sliding bearing.
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            NameFull: Dou, Pan
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            NameFull: Yang, Peiping
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            NameFull: Wu, Tonghai
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            NameFull: Wang, Shuo
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            – D: 30
              M: 01
              Text: Jan2025
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              Y: 2025
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              Value: 240
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