Results 21 to 30 of about 10,169,708 (230)

Analysis of Solid Contamination in Ball Bearing Through Acoustic Emission Signals

Archives of Metallurgy and Materials, 2017
Acoustic emission is one of the effective techniques used for the condition monitoring of rolling element bearings. Contamination is one of the major reasons for bearing early failure due to presence of solid particle in lubricant grease.
Sheriff K.A.I., Hariharan V., Kannan T.
doaj   +1 more source

Dynamic Analysis of a Rotor-Bearing-SFD System with the Bearing Inner Race Defect

Shock and Vibration, 2017
In this paper, the dynamic behavior of a rotor-bearing-SFD system with the inner race defect of bearing is investigated. The contact force between the rolling element and the race is calculated in Hertzian contact and elastohydrodynamic lubrication ...
Junhong Zhang, Xin Lu, Jiewei Lin, Liang Ma, Jun Wang   +4 more
doaj   +1 more source

Identification of Local Lubrication Regimes on Textured Surfaces by 3D Roughness Curvature Radius [PDF]

, 2014
This paper proposes a new method of 3D roughness peaks curvature radius calculation and its application to tribological contact analysis as a characteristic signature of tribological contact.
Bigerelle, M., Bigerelle, M, Dubar, L., L. Dubar, Kubiak, KJ, C. Hubert, Hubert, C., M. Bigerelle, K. J. Kubiak, Bigerelle, Maxence, Hubert, Cedric, Dubar, Laurent, Kubiak, Krzysztof, Dubar, L, Kubiak, K. J., Hubert, C   +15 more
core   +1 more source

Multi-objective optimization of air-oil two-phase flow for helicopter planetary gear bearings based on the Kriging surrogate model and NSGA-II algorithm

Engineering Applications of Computational Fluid Mechanics
Due to the limited spatial constraints and complex motion of aerospace planetary gear reducers, under-race lubrication is employed for planetary gear bearings to ensure adequate lubrication performance with minimal oil flow.
Junda Chen, Bo Wu, Xiang Zhu, Caihua Yang, Yanyang Zhang, Xin Huang, Yu Dai   +6 more
doaj   +1 more source

Monitoring of the lubrication of greased main spindle bearings

, 2022
S.492-496A newly developed diagnosis system detects several critical states at the same time (1). Te procedure serves for the determination of over-lubrication and under-lubrication, ageing of lubricant, pollution of lubricant by coolant or water, damage
Spur, G., Feil, A.
core   +1 more source

Tribological aspect of lubrication in form tapping of high strength steel [PDF]

, 2008
Collaboration avec le LTDSThis study aims at analyzing the tribochemical mechanisms of lubrication during the process of form tapping and consequently optimizing the formulation of the lubricant. In order to correlate the tribochemical reactions with the
GENET, Nicole, LE MOGNE, Thierry, FROMENTIN, Guillaume, MARTIN, Jean-Michel, BIERLA, Aleksandra   +4 more
core  

Effects of Mg on Microstructure and Solidification of a Hypereutectic Zn–8 wt.%Al Alloy

Advanced Engineering Materials, EarlyView.
An appreciable set of results involving thermal data, microstructure, chemical composition, and microstructural growth laws is reported for ZnAlMg alloys. Such results demonstrate that ZnAlMg alloys have high potential for applications in automotive self‐lubricating components, batteries, and electrical systems.
Raí B. de Sousa, Jeverton L. Paixão, Daylla S. Silva, Bruno S. Sobral, Mucio D. de Medeiros, José E. Spinelli, Bismarck L. Silva   +6 more
wiley   +1 more source

3D‐Printed Titanium Gyroid Scaffold Structure Integrated With Tough Hybrid Materials for Cartilage Replacement

Advanced Engineering Materials, EarlyView.
This study proposes a potential device design for joint cartilage replacement. Silica‐polytetrahydrofuran (SiO2‐PolyTHF) hybrids with customizable mechanical properties were developed to mimic the characteristics of a natural meniscus. These were synthesized through a two‐pot sol–gel hybrid process.
Yu‐Chien Lin, Gloria R. Young, Francesca Tallia, Reece N. Oosterbeek, Shaaz Ghouse, Edward Spiers, Nupur Kohli, Tom Briggs, Marc Masen, Siwei Li, Ren‐Jei Chung, Jonathan R. T. Jeffers, Julian R. Jones   +12 more
wiley   +1 more source

The tribological behaviour of glass filled polytetrafluoroethylene(PTFE) under dry and water lubrication [PDF]

, 2003
Includes bibliographical references.This study was aimed at establishing the tribological behaViour of 25 % wt glass fibre filled polytetrafluoroethylene (PTFE) under dry sliding conditions.
Klaas, Nkosana V
core   +1 more source

An Improved Analytical Model of a Flexible–Rigid Combined Rolling Bearing with Elastohydrodynamic Lubrication

Machines
In industrial applications, the operating state of bearings can directly affect the performance of mechanical equipment. Local defects, flexible raceways and lubrication have a great impact on the vibration characteristics of rolling bearings.
Qinchao Wang, Zhilong Liu, Xinguang Ma, Zhengquan Wang, Junqin Yu   +4 more
doaj   +1 more source