Online Measurement of Lubricating Film Thickness in Slider-on-Disc Contact Based on Dichromatic Optical Interferometry

Qinghua Bai; Feng Guo; Pat Lam Wong; Peigang Jiang

doi:10.1007/s11249-017-0928-3

Online Measurement of Lubricating Film Thickness in Slider-on-Disc Contact Based on Dichromatic Optical Interferometry

Qinghua Bai, Feng Guo^*, Pat Lam Wong, Peigang Jiang

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

15 Citations (Scopus)

Abstract

The present study mainly focuses on a new approach to achieve online measurement of lubricating film thickness in a slider-on-disc contact. The inclination of the slider is obtained by Fourier transform and frequency estimation of the interferogram of the sliding contact. An algorithm that is based on optical flow calculation and dynamic time warping technique is presented for tracking a characteristic point with constant film thickness on the 1-D modulated intensity curve. Online film thickness measurement can thus be achieved. This approach has been validated with known gap thickness of a stationary wedge. In addition, transient film thickness under unsteady speeds was measured with the present approach and some lubrication behaviours have been revealed.

Original language	English
Article number	145
Number of pages	10
Journal	Tribology Letters
Volume	65
Issue number	4
Online published	6 Oct 2017
DOIs	https://doi.org/10.1007/s11249-017-0928-3
Publication status	Published - Dec 2017

Research Keywords

Lubricant film thickness
Online film thickness measurement
Optical interference
Slider-on-disc contact

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10.1007/s11249-017-0928-3

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title = "Online Measurement of Lubricating Film Thickness in Slider-on-Disc Contact Based on Dichromatic Optical Interferometry",

abstract = "The present study mainly focuses on a new approach to achieve online measurement of lubricating film thickness in a slider-on-disc contact. The inclination of the slider is obtained by Fourier transform and frequency estimation of the interferogram of the sliding contact. An algorithm that is based on optical flow calculation and dynamic time warping technique is presented for tracking a characteristic point with constant film thickness on the 1-D modulated intensity curve. Online film thickness measurement can thus be achieved. This approach has been validated with known gap thickness of a stationary wedge. In addition, transient film thickness under unsteady speeds was measured with the present approach and some lubrication behaviours have been revealed.",

keywords = "Lubricant film thickness, Online film thickness measurement, Optical interference, Slider-on-disc contact",

author = "Qinghua Bai and Feng Guo and Wong, {Pat Lam} and Peigang Jiang",

year = "2017",

month = dec,

doi = "10.1007/s11249-017-0928-3",

language = "English",

volume = "65",

journal = "Tribology Letters",

issn = "1023-8883",

publisher = "Springer Science and Business Media, LLC",

number = "4",

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TY - JOUR

T1 - Online Measurement of Lubricating Film Thickness in Slider-on-Disc Contact Based on Dichromatic Optical Interferometry

AU - Bai, Qinghua

AU - Guo, Feng

AU - Wong, Pat Lam

AU - Jiang, Peigang

PY - 2017/12

Y1 - 2017/12

N2 - The present study mainly focuses on a new approach to achieve online measurement of lubricating film thickness in a slider-on-disc contact. The inclination of the slider is obtained by Fourier transform and frequency estimation of the interferogram of the sliding contact. An algorithm that is based on optical flow calculation and dynamic time warping technique is presented for tracking a characteristic point with constant film thickness on the 1-D modulated intensity curve. Online film thickness measurement can thus be achieved. This approach has been validated with known gap thickness of a stationary wedge. In addition, transient film thickness under unsteady speeds was measured with the present approach and some lubrication behaviours have been revealed.

AB - The present study mainly focuses on a new approach to achieve online measurement of lubricating film thickness in a slider-on-disc contact. The inclination of the slider is obtained by Fourier transform and frequency estimation of the interferogram of the sliding contact. An algorithm that is based on optical flow calculation and dynamic time warping technique is presented for tracking a characteristic point with constant film thickness on the 1-D modulated intensity curve. Online film thickness measurement can thus be achieved. This approach has been validated with known gap thickness of a stationary wedge. In addition, transient film thickness under unsteady speeds was measured with the present approach and some lubrication behaviours have been revealed.

KW - Lubricant film thickness

KW - Online film thickness measurement

KW - Optical interference

KW - Slider-on-disc contact

UR - http://www.scopus.com/inward/record.url?scp=85030860014&partnerID=8YFLogxK

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85030860014&origin=recordpage

U2 - 10.1007/s11249-017-0928-3

DO - 10.1007/s11249-017-0928-3

M3 - RGC 21 - Publication in refereed journal

SN - 1023-8883

VL - 65

JO - Tribology Letters

JF - Tribology Letters

IS - 4

M1 - 145

ER -

Online Measurement of Lubricating Film Thickness in Slider-on-Disc Contact Based on Dichromatic Optical Interferometry

Abstract

Research Keywords

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GRF: Optimization and Enhancement of Oil Supply for Hydrodynamic Slider Bearing through Tailored Surface Effects

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Online Measurement of Lubricating Film Thickness in Slider-on-Disc Contact Based on Dichromatic Optical Interferometry

Abstract

Research Keywords

Access Output

Other Access Options

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Projects

GRF: Optimization and Enhancement of Oil Supply for Hydrodynamic Slider Bearing through Tailored Surface Effects

Cite this