A5062544991- Adhesion, Friction, and Surface Interactions
- Tribology and Lubrication Engineering
- Gear and Bearing Dynamics Analysis
- Lubricants and Their Additives
- Force Microscopy Techniques and Applications
- Advanced Measurement and Metrology Techniques
- Brake Systems and Friction Analysis
- Surface Roughness and Optical Measurements
- Vibration Control and Rheological Fluids
- Diamond and Carbon-based Materials Research
- Tribology and Wear Analysis
- Advanced Fiber Optic Sensors
- Rheology and Fluid Dynamics Studies
- Hydraulic and Pneumatic Systems
- Advanced Surface Polishing Techniques
- Characterization and Applications of Magnetic Nanoparticles
- Mechanical stress and fatigue analysis
- Electrical Contact Performance and Analysis
- Polymer Surface Interaction Studies
- Magnetic Bearings and Levitation Dynamics
- Vibration and Dynamic Analysis
- Metal and Thin Film Mechanics
- Railway Engineering and Dynamics
- Magnetic and Electromagnetic Effects
- Mechanical Engineering and Vibrations Research
City University of Hong Kong
2015-2024
Radiology Associates of Albuquerque
2024
University of Otago
2018
Flex (United States)
2003
Universiti Sains Malaysia
2002
University of Sheffield
2001
Tsinghua University
1999
National Tsing Hua University
1994
Hong Kong Polytechnic University
1992
Studies of elastohydrodynamic lubrication (EHL) frequently utilize the phenomenon optical interference which is exhibited when an illuminated steel ball in contact with a partially Cr-coated glass disc conjunction lubricant layer known refractive index. The use and chromium surfaces enables lubricants having similar indices to be examined. EHL composed two microscopically thin layers: Cr coating film, bounded by ball. That two-beam method used research may induce significant errors...
Abstract The apparent viscosities of liquid lubricants at high pressures measured using an impact viscometer have been reported in previous research to be time-dependent. In the work here, microviscometer technique has further developed give measurements true shear stress and rate, allowing studies rheological behavior without any initial assumptions about flow properties. temporal variation viscosity is shown a shear-thinning effect. Under pressures, examined exhibited non-Newtonian...
The overhead conductor system (OCS) could be one of the most economical and feasible engineering solutions to problem how transmit electrical energy intercity trains (typically at 25 kV AC) or urban/suburban 1.5 DC) along open tunnel routes. However, consumption contact wire collector strips due wear tear impose a severe cost on railway operator should interaction between couple formed by OCS pantograph poor. Following completion several improvement projects, this paper examines factors that...
This paper presents a deliberately designed elastohydrodynamical lubrication (EHL) experiment for the study of individual effect limiting shear stress and wall slippage. Very slow entrainment speeds were employed to avoid influential heating oils high viscosities chosen ensure that conjunction was under typical EHL. An anomalous EHL film, characterized by dimple at inlet region, obtained. Literature revealed this reported in some numerical studies taking into consideration...
This article presents an original idea: the use of metal foams to store unexcited magnetorheological fluid (MRF) in such a way that mixture can be propelled when excited. work is motivated by desire overcome need for costly dynamic seals conventional MRF dampers. The results foam characteristics, possible changes content MRF, and responses soaked excited are presented. A plate-on-plate test rig was developed investigate performance MRF-soaked set-up. shearing performance, response time, gap...