TY - JOUR
T1 - Online monitoring of oil film thickness of journal bearing in aviation fuel gear pump
AU - Wei, Shijie
AU - Wang, Junru
AU - Cui, Jian
AU - Song, Shanshan
AU - Li, Huacong
AU - Fu, Jiangfeng
N1 - Publisher Copyright:
© 2022 Elsevier Ltd
PY - 2022/11/30
Y1 - 2022/11/30
N2 - As the key support of aviation fuel pumps, journal bearings are operated under extreme conditions of high temperature, high pressure and low viscosity media, therefore, the broken of the ultra-thin lubrication film is the main cause of lubrication failure and abnormal wear. However, the dynamic hydraulic lubrication (DHL) film is still blind due to the lack of non-destructive online monitoring techniques. This paper presents the study of ultrasonic-based measurement for the dynamic oil film thickness of fuel pump. The circumferential oil film thicknesses in a journal bearing are measured with the complex model and the resonance model, meanwhile, the minimum oil film thickness is extracted by fitting the measured points with the initial circle. Under varying operating conditions, the measured results are verified with classical DHL simulations, and the maximum relative error is shown to be lower than 15%.
AB - As the key support of aviation fuel pumps, journal bearings are operated under extreme conditions of high temperature, high pressure and low viscosity media, therefore, the broken of the ultra-thin lubrication film is the main cause of lubrication failure and abnormal wear. However, the dynamic hydraulic lubrication (DHL) film is still blind due to the lack of non-destructive online monitoring techniques. This paper presents the study of ultrasonic-based measurement for the dynamic oil film thickness of fuel pump. The circumferential oil film thicknesses in a journal bearing are measured with the complex model and the resonance model, meanwhile, the minimum oil film thickness is extracted by fitting the measured points with the initial circle. Under varying operating conditions, the measured results are verified with classical DHL simulations, and the maximum relative error is shown to be lower than 15%.
KW - Fuel gear pump
KW - Oil film thickness
KW - Online monitoring
KW - Ultrasonic measurement
UR - http://www.scopus.com/inward/record.url?scp=85140084170&partnerID=8YFLogxK
U2 - 10.1016/j.measurement.2022.112050
DO - 10.1016/j.measurement.2022.112050
M3 - 文章
AN - SCOPUS:85140084170
SN - 0263-2241
VL - 204
JO - Measurement: Journal of the International Measurement Confederation
JF - Measurement: Journal of the International Measurement Confederation
M1 - 112050
ER -