Imperial College London
Portrait Picture

Dr Min Yu

Faculty of Engineering, Department of Mechanical Engineering

Imperial College Research Fellow
 
 
 
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Contact

 

m.yu14

 
 
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Location

 

564City and Guilds BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Dou:2022:10.1007/s40544-021-0544-y,
author = {Dou, P and Wu, T and Luo, Z and Yang, P and Peng, Z and Yu, M and Reddyhoff, T},
doi = {10.1007/s40544-021-0544-y},
journal = {Friction},
pages = {944--962},
title = {A finite-element-aided ultrasonic method for measuring central oil film thickness in a roller-raceway tribo-pair},
url = {http://dx.doi.org/10.1007/s40544-021-0544-y},
volume = {10},
year = {2022}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Roller bearings support heavy loads by riding on an ultra-thin oil film (between the roller and theraceway), the thickness of which is critical as it reflects the lubrication performance. Ultrasonicinterfacial reflection, which facilitates a non-destructive measurement of oil film thickness, has beenwidely studied. However, insufficient spatial resolution around the rolling line contact zone remainsa barrier, despite the employment of miniature piezoelectric transducers. In this paper, a finiteelement-aided method is utilized to simulate wave propagation through a three-layered structureof roller-oil-raceway under elastohydrodynamic lubrication (EHL), with nonlinear characteristicsof i) the deformed curvature of the cylindrical roller and ii) the non-uniform distribution of fluid bulkmodulus along the circumference of the oil layer taken into account. A load- and speed-dependentlook-up table is then developed to establish an accurate relationship between the overall reflectioncoefficient (directly measured by an embedded ultrasonic transducer) and the objective variable ofcentral oil film thickness. Moreover, the proposed finite-element-aided method is verifiedexperimentally in a roller-raceway test rig, with the ultrasonic measured oil film thicknessessentially corresponding to the calculated values by EHL theory.
AU  - Dou,P
AU  - Wu,T
AU  - Luo,Z
AU  - Yang,P
AU  - Peng,Z
AU  - Yu,M
AU  - Reddyhoff,T
DO  - 10.1007/s40544-021-0544-y
EP  - 962
PY  - 2022///
SN  - 2223-7690
SP  - 944
TI  - A finite-element-aided ultrasonic method for measuring central oil film thickness in a roller-raceway tribo-pair
T2  - Friction
UR  - http://dx.doi.org/10.1007/s40544-021-0544-y
UR  - http://hdl.handle.net/10044/1/90916
VL  - 10
ER  -
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