Results 51 to 60 of about 669,435 (232)

Parylene stiction [PDF]

open access: yes, 2010
This paper presents a preliminary study into stiction between parylene C and substrate surfaces for biocompatible check-valve applications. During fabrication, parylene C is used as the structural material for the check-valve.
Chen, Po-Jui   +3 more
core   +1 more source

Optical sensor for journal bearing oil film pressure measurements

open access: yesTribologia, 2009
The oil film pressure is one of the fundamental parameters influencing the operation of journal bearings. The oil film pressure is estimated by theoretical calculations, since the measurement of oil film pressure has been a demanding task in journal bearings, especially in bearings carrying dynamic loads.
Valkonen, Antti   +9 more
openaire   +4 more sources

Effects of Profile Modification on Elastohydrodynamic Lubrication of Straight Bevel Gear

open access: yesJixie chuandong, 2019
In order to solve the spur bevel gear end meshing problem, through the straight tooth bevel gear profile modification, improve the small end of the oil film carrying capacity, making the distribution of load along the width of the tooth evenly.
Cong Wei   +3 more
doaj  

Study on Deformation Characteristics of Hollow Shaft of Grinding Mill’s Sliding Shoe Bearing Based on Fluid–Structure Interaction

open access: yesLubricants
The sliding shoe bearing serves as a critical rotary support component in large grinding mills. The deformation of the hollow shaft under operating conditions is a pivotal factor governing the uniformity and stability of the lubricating oil film ...
Yikai Zheng   +5 more
doaj   +1 more source

Marine Four-Stroke Diesel Engine Crankshaft Main Bearing Oil Film Lubrication Characteristic Analysis

open access: yesPolish Maritime Research, 2018
The Craig-Bampton modal synthesis method was used to establish the dynamic model of marine four-stroke diesel engine body and crankshaft. Based on the Greenwood/Tripp microlong contact theory considering the surface roughness and the generalized Reynolds
Xian Bin Teng, Jun Dong Zhang
doaj   +1 more source

The phase shift of an ultrasonic pulse at an oil layer and determination of film thickness [PDF]

open access: yes, 2005
An ultrasonic pulse incident on a lubricating oil film in a machine element will be partially reflected and partially transmitted. The proportion of the wave amplitude reflected, termed the reflection coefficient, depends on the film thickness and the ...
Astridge D. G.   +4 more
core   +1 more source

The thinning of the liquid layer over a probe in two-phase flow [PDF]

open access: yes, 1998
The draining of the thin water film that is formed between a two dimensional, infinite, initially flat oil-water interface and a smooth, symmetric probe, as the interface is advected by a steady and uniform flow parallel to the probe axis, is modelled ...
Oliver, J. M.
core   +1 more source

Monitoring of lubricant film failure in a ball bearing using ultrasound [PDF]

open access: yes, 2006
A lubricant-film monitoring system for a conventional deep groove ball bearing (type 6016, shaft diameter 80 mm, ball diameter 12.7 mm) is described. A high-firequency (50 MHz) ultrasonic transducer is mounted on the static outer raceway of the bearing ...
Anderson   +21 more
core   +1 more source

A coupled finite-volume CFD solver for two-dimensional elasto-hydrodynamic lubrication problems with particular application to rolling element bearings [PDF]

open access: yes, 2016
This paper describes a new computational fluid dynamics methodology for modelling elastohydrodynamic contacts. A finite-volume technique is implemented in the ‘OpenFOAM’ package to solve the Navier-Stokes equations and resolve all gradients in a ...
Dini, D   +3 more
core   +1 more source

Effect of Bearing Compliance on Thermo-hydrodynamic Lubrication of High Speed Misaligned Journal Bearing Lubricated with Bubbly Oil

open access: yesAl-Khawarizmi Engineering Journal, 2015
In the present work the effect of bearing compliance on the performance of high speed misaligned journal bearing lined with a compliant PTFE liner lubricated with bubbly oil at high speeds has been studied.
Basim Ajeel Abass   +1 more
doaj   +2 more sources

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