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

Author(s)

Qinghua Bai
Feng Guo
Pat Lam Wong
Peigang Jiang

Detail(s)

Original language	English
Article number	145
Journal / Publication	Tribology Letters
Volume	65
Issue number	4
Online published	6 Oct 2017
Publication status	Published - Dec 2017

Link(s)

DOI	DOI https://doi.org/10.1007/s11249-017-0928-3 Final Published version
	Check@CityULib
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-85030860014&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(784ba790-d6e8-4b46-ba32-51b3c5195f44).html

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.

Research Area(s)

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

Citation Format(s)

[ RIS ] [ BibTeX ]

Online Measurement of Lubricating Film Thickness in Slider-on-Disc Contact Based on Dichromatic Optical Interferometry. / Bai, Qinghua; Guo, Feng; Wong, Pat Lam et al.
In: Tribology Letters, Vol. 65, No. 4, 145, 12.2017.

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

Bai, Q, Guo, F, Wong, PL & Jiang, P 2017, 'Online Measurement of Lubricating Film Thickness in Slider-on-Disc Contact Based on Dichromatic Optical Interferometry', Tribology Letters, vol. 65, no. 4, 145. https://doi.org/10.1007/s11249-017-0928-3

Bai, Q., Guo, F., Wong, P. L., & Jiang, P. (2017). Online Measurement of Lubricating Film Thickness in Slider-on-Disc Contact Based on Dichromatic Optical Interferometry. Tribology Letters, 65(4), Article 145. https://doi.org/10.1007/s11249-017-0928-3

Bai Q, Guo F, Wong PL, Jiang P. Online Measurement of Lubricating Film Thickness in Slider-on-Disc Contact Based on Dichromatic Optical Interferometry. Tribology Letters. 2017 Dec;65(4):145. Epub 2017 Oct 6. doi: 10.1007/s11249-017-0928-3

Bai, Qinghua ; Guo, Feng ; Wong, Pat Lam et al. / Online Measurement of Lubricating Film Thickness in Slider-on-Disc Contact Based on Dichromatic Optical Interferometry. In: Tribology Letters. 2017 ; Vol. 65, No. 4.