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The application of the principle of wave superposition in ultrasonic measurement of lubricant film thickness.

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Title: The application of the principle of wave superposition in ultrasonic measurement of lubricant film thickness.
Authors: Dou, Pan1 (AUTHOR), Wu, Tonghai1 (AUTHOR) wt-h@163.com, Luo, Zhaopeng1 (AUTHOR), Peng, Zhongxiao1 (AUTHOR), Sarkodie-Gyan, Thompson1 (AUTHOR)
Source: Measurement (02632241). Apr2019, Vol. 137, p312-322. 11p.
Subjects: Superposition principle (Physics), Ultrasonic waves, Ultrasonic measurement, Thin films, Ultrasonic equipment, Filmstrips
Abstract: Highlights • The principle of wave superposition is applied to analyse resonant model. • The phase difference π is the essential resonance mechanism. • The minimum and zero-crossing methods are highly consistent in a wide range. • The influence of the number of echoes on the resonant model has been verified. • The influence of the solid layers on the resonant model has been determined. Abstract The principle of resonance is often applied in the ultrasonic measurement of the thickness of lubricant films. The information data relating to the thickness of the lubricant film involves the acquisition of the resonance frequency of a continuous wave with the application of a continuum model. However, ultrasonic signals are often times, generated by piezoelectric elements but these exhibit some variations from the continuous wave because they are dispersed pulses that have a wide range of frequency bandwidths. In this paper, the authors have applied the principle of wave superposition for the measurement of lubricant film thickness. This principle exhibits the capability to generate the resonant mechanisms of the pulse waves. The implemented theoretical analysis in this research work, depicted that the principle of wave superposition may demonstrate more applicability than the continuum model under the condition of the partial inclusion of the reflected pulse waves. The application of this principle facilitated the analysis of the resonant mechanisms of the pulse wave from the phase variations of the reflected echoes. It followed the further investigations into the influence of both the number of the reflected echoes and the materials of the solid layers on the film resonance method. The results of these investigations were validated using experimental results. [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
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Header DbId: egs
DbLabel: Engineering Source
An: 135913947
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Data: The application of the principle of wave superposition in ultrasonic measurement of lubricant film thickness.
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  Data: <searchLink fieldCode="AR" term="%22Dou%2C+Pan%22">Dou, Pan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wu%2C+Tonghai%22">Wu, Tonghai</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> wt-h@163.com</i><br /><searchLink fieldCode="AR" term="%22Luo%2C+Zhaopeng%22">Luo, Zhaopeng</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Peng%2C+Zhongxiao%22">Peng, Zhongxiao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Sarkodie-Gyan%2C+Thompson%22">Sarkodie-Gyan, Thompson</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Measurement+%2802632241%29%22">Measurement (02632241)</searchLink>. Apr2019, Vol. 137, p312-322. 11p.
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  Data: <searchLink fieldCode="DE" term="%22Superposition+principle+%28Physics%29%22">Superposition principle (Physics)</searchLink><br /><searchLink fieldCode="DE" term="%22Ultrasonic+waves%22">Ultrasonic waves</searchLink><br /><searchLink fieldCode="DE" term="%22Ultrasonic+measurement%22">Ultrasonic measurement</searchLink><br /><searchLink fieldCode="DE" term="%22Thin+films%22">Thin films</searchLink><br /><searchLink fieldCode="DE" term="%22Ultrasonic+equipment%22">Ultrasonic equipment</searchLink><br /><searchLink fieldCode="DE" term="%22Filmstrips%22">Filmstrips</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Highlights • The principle of wave superposition is applied to analyse resonant model. • The phase difference π is the essential resonance mechanism. • The minimum and zero-crossing methods are highly consistent in a wide range. • The influence of the number of echoes on the resonant model has been verified. • The influence of the solid layers on the resonant model has been determined. Abstract The principle of resonance is often applied in the ultrasonic measurement of the thickness of lubricant films. The information data relating to the thickness of the lubricant film involves the acquisition of the resonance frequency of a continuous wave with the application of a continuum model. However, ultrasonic signals are often times, generated by piezoelectric elements but these exhibit some variations from the continuous wave because they are dispersed pulses that have a wide range of frequency bandwidths. In this paper, the authors have applied the principle of wave superposition for the measurement of lubricant film thickness. This principle exhibits the capability to generate the resonant mechanisms of the pulse waves. The implemented theoretical analysis in this research work, depicted that the principle of wave superposition may demonstrate more applicability than the continuum model under the condition of the partial inclusion of the reflected pulse waves. The application of this principle facilitated the analysis of the resonant mechanisms of the pulse wave from the phase variations of the reflected echoes. It followed the further investigations into the influence of both the number of the reflected echoes and the materials of the solid layers on the film resonance method. The results of these investigations were validated using experimental results. [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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        Value: 10.1016/j.measurement.2019.01.057
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      – Code: eng
        Text: English
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        PageCount: 11
        StartPage: 312
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        Type: general
      – SubjectFull: Ultrasonic waves
        Type: general
      – SubjectFull: Ultrasonic measurement
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      – SubjectFull: Thin films
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      – SubjectFull: Ultrasonic equipment
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      – SubjectFull: Filmstrips
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            NameFull: Dou, Pan
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            NameFull: Wu, Tonghai
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            NameFull: Luo, Zhaopeng
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              M: 04
              Text: Apr2019
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              Y: 2019
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