Results 11 to 20 of about 626,953 (312)
The phase shift of an ultrasonic pulse at an oil layer and determination of film thickness [PDF]
, 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
Lubricants, 2023 In the manufacturing and assembly of a toroidal drive mechanism, errors have a great influence on the load sharing of the mechanism. In order to improve the load-sharing characteristics of the mechanism, a floating oil film structure system is designed ...
Meijiao Mao +6 more
doaj +1 more source
A method for the measurement of hydrodynamic oil films using ultrasonic reflection [PDF]
, 2004 The measurement of the thickness of an oil film in a lubricated component is essential information for performance monitoring and control. In this work, a new method for oil film thickness measurement, based on the reflection of ultrasound, is evaluated ...
Drinkwater, B.W. +2 more
core +1 more source
Oil Film Formation of Reciprocating Seals Observed by Interferometry
Tribology 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
Machines, 2022 Oil film characteristics are critical to the high-reliability operation of high-pressure aviation piston pumps (APPs). However, there is still a lack of research on oil film modeling and characteristic analysis of high-pressure APPs. This paper takes the
Tianzhao Wang +7 more
doaj +1 more source
Study of Flow between Non-Isothermal Disks in Hydro-Viscous Drive
Tribology Online, 2018 The film flow between the disks is the critical factor in the design of hydro-viscous drive. In the previous work dealing with the flow in the gap, few authors considered the effect of non-isothermal interface on the flow.
Jianzhong Cui
doaj +1 more source
Oil film measurement in polytetrafluoroethylene-faced thrust pad bearings for hydrogenerator applications [PDF]
, 2006 There is a growing trend in the replacement of the babbit facing in thrust pad bearings with a composite polytetrafluoroethylene (PTFE) surface layer. The PTFE-faced bearings have been shown to allow a greater specific pressure, reduce thermal crowning ...
Drinkwater, B.W. +3 more
core +1 more source
Study on Lubrication Performance of Journal Bearing with Multiple Texture Distributions
Applied Sciences, 2018 The lubrication performance of journal bearings with different sorts of uniformly distributed micro-spherical textures are studied in this paper. Geometries and dynamic models of journal bearings with pure concave/convex textures are developed.
Jun Wang +3 more
doaj +1 more source
Effect of Soccer Ball Panels on Aerodynamic Characteristics and Flow in Drag Crisis
Applied Sciences, 2020 The panel patterns of soccer balls that change with each World Cup have a significant impact on the balls’ aerodynamic and flight characteristics. In this study, the aerodynamic forces of eleven types of soccer ball with different panel patterns were ...
Yuki Sakamoto +2 more
doaj +1 more source
Applied Sciences, 2016 In order to evaluate the operating performance of a new type oil-film bearing oil S220, a new test bearing was designed based on oil-film bearing test rig. The operating temperature of S220 was tested through the thermocouples installed on a test bearing;
Jianmei Wang +4 more
doaj +1 more source