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Measurement science and technology, 2020
The ultrasonic-based method has been proved to be a practical technique for measuring oil film thickness in the enclosed tribo-pair of a supporting bearing and under dynamic conditions.
Pan Dou, Tonghai Wu, Zhongxiao Peng
semanticscholar +1 more source
The ultrasonic-based method has been proved to be a practical technique for measuring oil film thickness in the enclosed tribo-pair of a supporting bearing and under dynamic conditions.
Pan Dou, Tonghai Wu, Zhongxiao Peng
semanticscholar +1 more source
Thermal effect on stability and minimum oil film thickness of a deep/shallow pockets conical bearing
Industrial Lubrication and Tribology, 2020PurposeThis paper aims to study the influence of thermal effect on the performance for a high-speed conical hybrid bearing including stability and minimum oil film thickness.Design/methodology/approachA thermal hydrodynamic (THD) model and dynamic model ...
Ningning Wu +3 more
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Interferometry-based measurements of oil-film thickness
Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, 2001Measurement of the thickness of thin lubricant films separating rotating surfaces in elastohydrodynamic experiments presents some challenging problems. The nature of the experimental apparatus inhibits the use of most commonly applied interferometric phase measurement methods.
O Marklund, L Gustafsson
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Interpreting Experimental Bearing Oil Film Thickness Data
SAE Technical Paper Series, 1989<div class="htmlview paragraph">To verify the relationship between bearing oil film thickness and high-temperature, high-shear (HTHS) engine oil viscosity, accurate values for bearing oil temperature and shear rate are needed. Techniques for making these determinations are presented using data collected from engine tests with both single- and ...
James A. Spearot +2 more
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, 2020
The ultrasonic reflection from a lubricated interface has been widely analyzed to measure fluid film thickness, with different algorithms being applied to overcome measurement accuracy and resolution issues.
Min Yu +5 more
semanticscholar +1 more source
The ultrasonic reflection from a lubricated interface has been widely analyzed to measure fluid film thickness, with different algorithms being applied to overcome measurement accuracy and resolution issues.
Min Yu +5 more
semanticscholar +1 more source
Oil Film Thickness in Lightly-Loaded Roller Bearings
Journal of Mechanical Engineering Science, 1974The effects of speed, load and roller geometry on the oil film thickness and shape in a complete roller bearing are demonstrated experimentally by means of optical interferometry. At quite moderate roller speeds, increase of film thickness becomes inhibited.
H. Bahadoran, R. Gohar
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Roller sliding in engine valve train: Effect of oil film thickness considering lubricant composition
, 2020In roller follower valve train, proper rolling of roller reduces the chances of fatigue failure and power losses. During engine operation, the roller does slip on the camshaft surface.
M. Khurram +10 more
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Quantitative elastohydrodynamic film thickness of mechanically degraded oil
Tribology International, 2013Abstract The low-shear viscosities of new oil and used (degraded) oil were measured to moderately high pressure. Shear-thinning flow curves were generated over a range of shear stress important to EHL film forming. Mechanical shear degradation only affected the viscosity at low shear stress while the viscosity at high stress remained unchanged.
Scott Bair +3 more
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Industrial Lubrication and Tribology
Purpose The purpose of this study is to investigate the application of non-destructive testing methods in measuring bearing oil film thickness to ensure that bearings are in a normal lubrication state.
Fei Shang, Bo Sun, Dandan Cai
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Purpose The purpose of this study is to investigate the application of non-destructive testing methods in measuring bearing oil film thickness to ensure that bearings are in a normal lubrication state.
Fei Shang, Bo Sun, Dandan Cai
semanticscholar +1 more source
Oil film thickness using airborne laser-induced oil fluorescence backscatter
Applied Optics, 1983Remote airborne measurement of oil film thickness on ocean surface using laser-induced water Raman backscatter is discussed. It is pointed out that the theoretical model of oil fluorescence by Horvath et al. (1971) contains the necessary constituents to provide for the natural background fluorescence that is also induced by the laser during the course ...
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