Ultrasonic measurement for lubricant film thickness with consideration to the effect of the solid materials

被引：5

作者：

He, Yanbo ^{[1
]}

Wang, Jianyun ^{[1
]}

Gu, Le ^{[2
]}

Zhang, Chuanwei ^{[2
]}

Yu, Haide ^{[1
]}

Wang, Liqin ^{[1
,2
]}

Li, Zhen ^{[1
]}

Mao, Yuze ^{[3
]}

机构：

[1] Harbin Inst Technol, MIIT Key Lab Aerosp Bearing Technol & Equipment, Harbin 150001, Peoples R China

[2] Harbin Inst Technol, State Key Lab Robot & Syst, Harbin 150080, Peoples R China

[3] Shanghai Aerosp Control Technol Inst, Shanghai 201100, Peoples R China

来源：

APPLIED ACOUSTICS | 2023年 / 211卷

基金：

中国国家自然科学基金;

关键词：

Lubricant film thickness measurement; Ultrasound; Reflection coefficient phase; Acoustic impedance; PULSE;

D O I：

10.1016/j.apacoust.2023.109563

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

An improved ultrasonic reflection coefficient phase model is proposed for lubricant film thickness measurement with consideration to the influence of the solid layers. In the model, the theoretical relation of the lubricant film thickness to ultrasonic reflection coefficient phase is established, which is used for effectively determining the lubricant film thickness. Furthermore, the proposed model is verified by both the finite element analysis and experiments. The results show that the lubricant film thickness ranges between 2 & mu;m and 45 & mu;m can be measured by using the proposed model, which covers both the spring model region and the blind region. In addition, at a small film thickness, the reflection coefficient phase is significantly affected by the acoustic impedances in both solid layers. However, the reflection coefficient phase is dominantly affected by the solid layer in the neighbourhood of the incidence source at a large film thickness.

引用

页数：10

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