基于接触电阻法测量润滑油膜厚度的方法研究

doi:10.3969/j.issn.1000-1158.2023.12.05

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Abstract A method for measuring lubricating oil film thickness based on contact resistance method has been proposed, and a rotating friction testing machine that can measure contact resistance in real-time to evaluate lubricating film thickness has been developed. The correlation between oil film thickness and contact resistance in boundary lubrication and mixed lubrication states is studied and established. Load and speed are precisely controlled to realize a stable lubrication condition. The electrical resistance of the contact area is measured in-situ by a specially and precisely designed electrical circuit. Corresponding relation between the contact resistance and lubrication film thickness measured by the optical interference method under the same working conditions has been established,the correlation coefficient of the fitting curve is 0.98, and the remaining standard deviation is 4.56nm. This study provides technical experience and data support for the characterization of lubrication state in real operating conditions.

Key words： film thickness measuremen lubrication;contact resistance method;friction testing machine

Received: 27 February 2023 Published: 27 December 2023

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TB921

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	Articles by authors
	TONG Wei-jie
	HUANG Lu
	JIA Xin
	SUN Miao
	CAI Jin-hui

Cite this article:

TONG Wei-jie,HUANG Lu,JIA Xin, et al. Research on Thickness Measurement of Lubricating Oil Film Based on Contact Resistance Method[J]. Acta Metrologica Sinica, 2023, 44(12): 1812-1818.

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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2023.12.05 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2023/V44/I12/1812

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