Results 241 to 250 of about 363,743 (292)

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, Chester K. Murphy, Asoke K. Deysarkar   +2 more
openaire   +1 more source

Exact analytical solution to ultrasonic interfacial reflection enabling optimal oil film thickness measurement

, 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, Li Shen, T. Mutasa, Pan Dou, Tonghai Wu, T. Reddyhoff   +5 more
semanticscholar   +1 more source

Oil Film Thickness in Lightly-Loaded Roller Bearings

Journal of Mechanical Engineering Science, 1974
The 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
openaire   +1 more source

Quantitative elastohydrodynamic film thickness of mechanically degraded oil

Tribology International, 2013
Abstract 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, Ivan Krupka, Petr Sperka, Martin Hartl   +3 more
openaire   +1 more source

A comprehensive review of non-destructive methods for bearing lubricating oil film thickness measurement

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
semanticscholar   +1 more source

Oil film thickness using airborne laser-induced oil fluorescence backscatter

Applied Optics, 1983
Remote 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 ...
openaire   +2 more sources

Optical Measurement of Oil Film Thickness Between Rollers

Journal of Lubrication Technology, 1977
Previous research has established that the laser beam diffraction method can be used for measurement of film thicknesses between two adjacent flat surfaces. This paper describes further experimentation on this method, where oil film thicknesses between rollers is measured.
T. Willis, B. Seth
openaire   +1 more source

Nanometric Thickness EHL Oil Films

Part B: Magnetic Storage Tribology; Manufacturing/Metalworking Tribology; Nanotribology; Engineered Surfaces; Biotribology; Emerging Technologies; Special Symposia on Contact Mechanics; Special Symposium on Nanotribology, 2006
EHD oil films possess a remnant thickness of 10–20 nm at very low speeds. This behavior was justified numerically using an empirical equation for wall viscosity. This paper uses molecule-wall interaction potential and finds that the viscosity decreases exponentially with the distance to the wall. A thin attached layer, responsible for remnant oil film,
openaire   +1 more source

Oil Refinery Applications Of Thick-Film Synthetic Coatings

Corrosion, 1959
Three recent developments in synthetic protective coatings have made possible relatively thick film applications per coat without resulting in sags, runs or skin-dry wrinkling. These developments are hot spray application, catalyst-cured coatings and high-film-build alkyd paints.
R. W. Maier, W. B. Cook, R. B. MacQueen
openaire   +1 more source

Investigation of cavitation evolution and hydrodynamic performances of oil film seal with spiral groove

, 2021
This paper presents cavitation action of the oil film seal with downstream-pumping spiral groove and effect of cavitation on the hydrodynamic performances.
Zhentao Li, Yongfan Li, Huiqing Cao, Muming Hao, Fuyu Liu, D. Meng   +5 more
semanticscholar   +1 more source