UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

Ultrasonic measurement of lubricant film thickness distribution of journal bearing

Ouyang, W; Zhou, Z; Jin, Y; Yan, X; Liu, Y; (2020) Ultrasonic measurement of lubricant film thickness distribution of journal bearing. Review of Scientific Instruments , 91 (6) , Article 065111. 10.1063/5.0007481. Green open access

[thumbnail of Liu_Ultrasonic measurement of lubricant film thickness distribution of journal bearing_AAM.pdf]
Preview
Text
Liu_Ultrasonic measurement of lubricant film thickness distribution of journal bearing_AAM.pdf - Accepted version

Download (1MB) | Preview

Abstract

Most film thickness measurement methods damage the working surface of a bearing and cannot measure the minimum film thickness, making it difficult to reveal the lubrication state and warn of wear. Two non-intrusive ultrasonic methods were proposed for measuring the film thickness distribution of the bearing, i.e., the full circumferential measurement and the prediction based on limited measuring points. The ultrasonic recognition model of film thickness was built. A film thickness measuring device and its calibration device were constructed. A calibration experiment in the range of 1–150 µm and a measurement experiment of the bearing’s film thickness distribution were carried out. The results showed that in the calibration range, the relative error of most recognition values was less than ±5%, and some are less than 3%. The identification accuracy of the spring model has a zoned phenomenon. The relative difference between the experimental and the simulated values of the film thickness was less than 8% under most working conditions. The predicted values of eccentricity, attitude angle, and minimum film thickness have a small difference from the simulated values, indicating that the accuracy of the measurement method is high.

Type: Article
Title: Ultrasonic measurement of lubricant film thickness distribution of journal bearing
Open access status: An open access version is available from UCL Discovery
DOI: 10.1063/5.0007481
Publisher version: https://doi.org/10.1063/5.0007481
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher's terms and conditions.
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Mechanical Engineering
URI: https://discovery.ucl.ac.uk/id/eprint/10101235
Downloads since deposit
19Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item