A unified model for large-scale thickness measurement of lubricating film based on ultrasonic lag phase slope.
Ultrasonics
; 131: 106956, 2023 May.
Article
em En
| MEDLINE
| ID: mdl-36827908
ABSTRACT
A unified model based on the ultrasonic lag phase slope is developed for measuring the lubricating film thickness at a large scale. The ultrasonic lag phase of adjacent waves instead of the phase of overlapped waves is calculated as a function of the ultrasonic frequency and film thickness. The slope of the ultrasonic lag phase is determined correspondingly, which is linearly proportional to the lubricating film thickness. Both the finite element analysis and tests on the lubricating film thickness are performed to verify the proposed method. The results show that despite the fluctuations of the lag phase, the lag phase slope can be used for measuring the lubricating film thickness at a large scale from 0.1 µm to 170 µm.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Ultrasonics
Ano de publicação:
2023
Tipo de documento:
Article
País de afiliação:
China