Results 11 to 20 of about 2,318,874 (286)

Ultrasonic Reflection for Measurement of Oil Film Thickness and Contact between Dissimilar Materials [PDF]

open access: yes, 2012
The contact between dissimilar materials occurs in many machine elements where one of the contacting parts is manufactured from low modulus materials such as lip seals, o-rings, and metal on polymer prosthetic hip joints.
Gasni, Dedison
core   +6 more sources

Study of film formation in EHD contacts using a novel method based on electrical capacitance [PDF]

open access: yes, 2011
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.The elastohydrodynamic lubrication regime (EHD) is found in many machine elements, such as rolling element bearings, gears, cam/tappet, where a combination ...
Furtuna, Marian Dumitru
core   +7 more sources

Measurement of the Film Thickness, Film Velocity and Entrainment Fraction in a Liquid-Air Annular Flow Using a Conductance Flowmeter [PDF]

open access: yes, 2009
In certain older oil wells in the Middle East, the produced fluid is predominantly natural gas which flows at very high rates (e.g. 50,000 m3 / day ). Smaller quantities of crude oil (e.g. 50m3 / day ) and water (950m3 / day ) are also produced.
Lucas, Gary, A-Yarubi, Qahtan
core   +3 more sources

Study on Factors Influencing Film Formation of Grease and Calculation Model for Grease Film Thickness

open access: yesLubricants, 2022
The grease film thickness was measured in fully flooded elastohydrodynamic lubrication, and the influence of rolling speed, load, consistency, base oil type and thickener type on grease film thickness was analyzed. A new calculation model for grease film
Zhe Zhang   +3 more
doaj   +1 more source

Oil Film Formation of Reciprocating Seals Observed by Interferometry

open access: yesTribology Online, 2014
Oil film thickness in rubber piston seals is measured by interferometry. Optimized optics and fluids enable clear interferograms. The oil film thickness on the contact area is measured during reciprocating motion.
Kenichi Yoshimura   +2 more
doaj   +1 more source

Analysis of the Flow Characteristics of the Liquid Film on the Wall Surface of the Corrugated Plate Dryer Based on PSD Method: A Short Communication

open access: yesFrontiers in Energy Research, 2020
Corrugated plate dryer is an important steam-water separation equipment in steam generator of secondary loop of nuclear power plant. Its steam-water separation efficiency has a certain influence on economic index of nuclear power plants. It is meaningful
Bo Wang   +7 more
doaj   +1 more source

Thickness of the Flowing Superfluid Film [PDF]

open access: yesPhysical Review Letters, 1970
It has recently been shown experimentally that the thickness of a saturated helium film is independent of its state of superflow. We present a simple model in which the thickness of such a film is fixed by dynamical considerations at the gas-film interface, and the required balance of forces is then provided by relatively minor adjustments in the film ...
Goodstein, D. L., Saffman, P. G.
openaire   +2 more sources

Nonlinear phase error analysis of equivalent thickness in a white-light spectral interferometer

open access: yesNanotechnology and Precision Engineering, 2019
A white light spectral interferometry based on a Linnik type system was established to accurately measure the thin film thickness through transparent medium. In practical work, the equivalent thickness of a beam splitter and the mismatch of the objective
Tong Guo   +5 more
doaj   +1 more source

Numerical simulation of two-phase flow in a microchannel for evaluating liquid film thickness and its Reynolds number dependency

open access: yesJournal of Fluid Science and Technology, 2023
In this study, the liquid film thickness of slug flow in a microchannel was numerically investigated. Particularly, we focused on a flow regime with high Reynolds and capillary numbers; these dimensionless number were independently modified to ...
Daisuke TSUNEOKA, Junnosuke OKAJIMA
doaj   +1 more source

An experimental study of the measuring hydration film thickness of clay particles with atomic force microscope probe

open access: yesShuiwen dizhi gongcheng dizhi, 2021
The thickness of hydration film of clay particles is the theoretical basis of swelling mechanism of argillaceous expansive rock and soil. There are abundant data on the measurement of clay particle hydration film thickness, but the study of the ...
Yongchun GUO   +3 more
doaj   +1 more source

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