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Ultrasonic reflection measured oil film thickness in the slipper bearings of an aviation fuel piston pump.

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Title: Ultrasonic reflection measured oil film thickness in the slipper bearings of an aviation fuel piston pump.
Authors: Zheng, Peng1 (AUTHOR), Dou, Pan1,2 (AUTHOR), Wu, Quanzhong1 (AUTHOR), Jia, Yaping1 (AUTHOR), Wu, Tonghai1 (AUTHOR) tonghai.wu@mail.xjtu.edu.cn, Yu, Min2 (AUTHOR), Lei, Yaguo1 (AUTHOR), Reddyhoff, Tom2 (AUTHOR)
Source: Mechanical Systems & Signal Processing. Nov2024, Vol. 220, pN.PAG-N.PAG. 1p.
Subjects: Reciprocating pumps, Aircraft fuels, Fuel pumps, Bearings (Machinery), Reflectance, Acoustic reflection
Abstract: Running on an ultra-thin dynamic oil film, the slipper bearing in an aviation fuel piston pump is vulnerable to lubrication failure. To improve lubrication performance, the slipper surface is often grooved. However, the eventual lubrication effects remain challenging to judge qualitatively due to inaccessible measurement of oil film thickness distribution during pump operation. Eddy current sensors have been attempted, but they inevitably damage the oil film itself, and the tribo-pair test bench or incomplete pump used cannot simulate the complete working performance of a real pump. Addressing this issue, an ultrasonic-based method is investigated for online monitoring of the oil film thickness in a grooved slipper bearing. Firstly, the influence of groove texture on acoustic reflection is investigated by dividing the acoustic echoes into that from the top and bottom of the grooved surface, respectively. On this basis, a reflection coefficient extraction method fusing the reference signal and reflected signals at the top and bottom of the grooved surface is proposed, which can accurately extract the reflection coefficient and thus calculate the oil film thickness. Secondly, the finite element simulation is carried out to reveal the universal effects of the groove structure on the classical calculation method. The theoretical validity of the proposed reflection coefficient extraction method is verified by finite element simulation and experiment. A real aviation fuel piston pump is adopted for experimental validation, which is thoroughly performed under various operating conditions. The ultrasound measurement method shows promising results that are consistent with the theoretical calculations. [ABSTRACT FROM AUTHOR]
Copyright of Mechanical Systems & Signal Processing is the property of Academic Press Inc. 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
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Header DbId: egs
DbLabel: Engineering Source
An: 178464385
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Label: Title
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  Data: Ultrasonic reflection measured oil film thickness in the slipper bearings of an aviation fuel piston pump.
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  Label: Authors
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  Data: <searchLink fieldCode="AR" term="%22Zheng%2C+Peng%22">Zheng, Peng</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Dou%2C+Pan%22">Dou, Pan</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wu%2C+Quanzhong%22">Wu, Quanzhong</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="%22Yu%2C+Min%22">Yu, Min</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lei%2C+Yaguo%22">Lei, Yaguo</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Reddyhoff%2C+Tom%22">Reddyhoff, Tom</searchLink><relatesTo>2</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Mechanical+Systems+%26+Signal+Processing%22">Mechanical Systems & Signal Processing</searchLink>. Nov2024, Vol. 220, pN.PAG-N.PAG. 1p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Reciprocating+pumps%22">Reciprocating pumps</searchLink><br /><searchLink fieldCode="DE" term="%22Aircraft+fuels%22">Aircraft fuels</searchLink><br /><searchLink fieldCode="DE" term="%22Fuel+pumps%22">Fuel pumps</searchLink><br /><searchLink fieldCode="DE" term="%22Bearings+%28Machinery%29%22">Bearings (Machinery)</searchLink><br /><searchLink fieldCode="DE" term="%22Reflectance%22">Reflectance</searchLink><br /><searchLink fieldCode="DE" term="%22Acoustic+reflection%22">Acoustic reflection</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Running on an ultra-thin dynamic oil film, the slipper bearing in an aviation fuel piston pump is vulnerable to lubrication failure. To improve lubrication performance, the slipper surface is often grooved. However, the eventual lubrication effects remain challenging to judge qualitatively due to inaccessible measurement of oil film thickness distribution during pump operation. Eddy current sensors have been attempted, but they inevitably damage the oil film itself, and the tribo-pair test bench or incomplete pump used cannot simulate the complete working performance of a real pump. Addressing this issue, an ultrasonic-based method is investigated for online monitoring of the oil film thickness in a grooved slipper bearing. Firstly, the influence of groove texture on acoustic reflection is investigated by dividing the acoustic echoes into that from the top and bottom of the grooved surface, respectively. On this basis, a reflection coefficient extraction method fusing the reference signal and reflected signals at the top and bottom of the grooved surface is proposed, which can accurately extract the reflection coefficient and thus calculate the oil film thickness. Secondly, the finite element simulation is carried out to reveal the universal effects of the groove structure on the classical calculation method. The theoretical validity of the proposed reflection coefficient extraction method is verified by finite element simulation and experiment. A real aviation fuel piston pump is adopted for experimental validation, which is thoroughly performed under various operating conditions. The ultrasound measurement method shows promising results that are consistent with the theoretical calculations. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Mechanical Systems & Signal Processing is the property of Academic Press Inc. 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.ymssp.2024.111696
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Reciprocating pumps
        Type: general
      – SubjectFull: Aircraft fuels
        Type: general
      – SubjectFull: Fuel pumps
        Type: general
      – SubjectFull: Bearings (Machinery)
        Type: general
      – SubjectFull: Reflectance
        Type: general
      – SubjectFull: Acoustic reflection
        Type: general
    Titles:
      – TitleFull: Ultrasonic reflection measured oil film thickness in the slipper bearings of an aviation fuel piston pump.
        Type: main
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          Name:
            NameFull: Zheng, Peng
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            NameFull: Dou, Pan
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            NameFull: Wu, Quanzhong
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            NameFull: Jia, Yaping
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            NameFull: Wu, Tonghai
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            NameFull: Yu, Min
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          Dates:
            – D: 01
              M: 11
              Text: Nov2024
              Type: published
              Y: 2024
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              Value: 08883270
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              Value: 220
          Titles:
            – TitleFull: Mechanical Systems & Signal Processing
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