Results 31 to 40 of about 669,435 (232)

Film thickness in a ball-on-disc contact lubricated with greases, bleed oils and base oils [PDF]

open access: yes, 2012
Three different lubricating greases and their bleed and base oils were compared in terms of film thickness in a ball-on-disc test rig through optical interferometry. The theoretical values calculated according to Hamrock's equation are in close agreement
Björling, M.   +5 more
core   +1 more source

A numerical approach for the analysis of deformable journal bearings [PDF]

open access: yes, 2012
This paper presents a numerical approach for the analysis of hydrodynamic radial journal bearings. The effect of shaft and housing elastic deformation on pressure distribution within oil film is investigated.
Benasciutti, D.   +3 more
core   +1 more source

Chuck for delicate drills [PDF]

open access: yes, 1972
Development of oil film technique to couple power between drive spindle and drill chuck for delicate drilling operations is discussed. Oil film permits application of sufficient pressure, but stops rotating when drill jams.
Copeland, C. S.
core   +1 more source

Development of Oil Film Pressure Measurement System for Engine Sliding Parts

open access: yesTribology Online, 2023
Reduction of heat and mechanical losses is a critical factor in reducing CO2 emissions and fuel consumption of automotive engines. Toward that end, it is necessary to investigate the lubrication conditions of engine sliding surfaces and instantaneous heat flux in the combustion chamber in order to obtain experimental data for validating computer-aided ...
Masakuni Oikawa   +3 more
openaire   +2 more sources

Fuzzy Logic based Model to Predict Maximum Oil-Film Pressure in Journal Bearing

open access: yes, 2013
Oil-film pressure response is one of the key parameters that describe the operating conditions in hydrodynamic lubrication regimes. In the present study, a fuzzy logic model is developed to predict the maximum oil-film pressure in hydrodynamic plain ...
Diyar I. Ahmed   +3 more
semanticscholar   +1 more source

Simulations of splashing high and low viscosity droplets

open access: yes, 2018
In this work simulations are presented of low viscosity ethanol and high viscosity silicone oil droplets impacting on a dry solid surface at atmospheric and reduced ambient pressure.
Boelens, Arnout M. P., de Pablo, Juan J.
core   +1 more source

Characterizations of the oil film considering the elastohydrodynamic lubrication effect of the piston–cylinder interface

open access: yesAIP Advances, 2020
To study the oil film performance, a multi-physical coupling model considering the elastohydrodynamic lubrication effect of the piston–cylinder interface is established and verified.
Xiaojun Chen   +4 more
doaj   +1 more source

Acoustic measurement of lubricant-film thickness distribution in ball bearings [PDF]

open access: yes, 2006
An oil-film thickness monitoring system capable of providing an early warning of lubrication failure in rolling element bearings has been developed. The system is used to measure the lubricant-film thickness in a conventional deep groove ball bearing ...
Bruce W. Drinkwater   +7 more
core   +1 more source

INFLUENCE OF LOAD AND SPEED CHANGE ON LUBRICATION PERFORMANCE OF LOW SPEED HEAVY DUTY BEARINGS

open access: yesJixie qiangdu, 2019
In order to study the lubricating property of low-speed heavy-duty bearing under the condition of different loads and speed, such as the oil film thickness, oil film pressure and changes of oil film velocity. Building model of fluid-structure interaction
ZHAO LiJuan, SHI BaiSheng, ZHANG MeiChen
doaj  

An in-situ synchrotron XAS methodology for surface analysis under high temperature, pressure and shear [PDF]

open access: yes, 2017
The complex tribochemical nature of lubricated tribological contacts is inaccessible in real time without altering their initial state. To overcome this issue, a new design of a pin-on-disc tribological apparatus was developed and combined with ...
A. Dorgham   +7 more
core   +2 more sources

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