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Article
Influences of Boundary Slip Coating on Elastohydrodynamically Lubricated Contacts
Recent research has identified the novel lubrication scheme brought by boundary slip effect in lubrication. However, the implementation of an endurable slip coating on elastohydrodynamic lubrication (EHL) is c...
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Article
Significant Psychosocial Influence in Frail People Living with HIV Independent of Frailty Instrument Used
Antiretroviral therapy (ART) usage among people living with HIV (PLWH) has led to significant mortality declines and increasing lifespan. However, high incidence and early onset of aging-related conditions suc...
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Article
Experimental Evidence on the Enhancement of Bearing Load Capacity by Localised Boundary Slip Effect
The lubrication performance of a bearing is determined by low friction and high load carrying capacity, which can be theoretically facilitated by partial-slip or heterogeneous-slip surface design. In the study...
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Article
Open AccessAn explicit solution to a three-dimensional wedge problem considering two edges effect
The paper presents an explicit matrix algorithm to solve the problem of an elastic wedge with three loaded surfaces. The algorithm makes use of a recently published concept of transformation matrix, by which t...
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Article
Boundary Yield Stress and Interfacial Potential Energy Barrier in Thin Film Hydrodynamic Lubrication
Boundary slip occurs in lubricated contacts if shear stress at the solid/liquid boundary attains a yield value. From a molecular perspective, the change from no-slip to slip condition signifies the liquid mole...
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Article
Erratum to: Correlation of Contact Angle Hysteresis and Hydrodynamic Lubrication
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Article
Correlation of Contact Angle Hysteresis and Hydrodynamic Lubrication
The strength of molecular adhesion at the lubricant–solid interface plays a key role in determining the load-carrying and film forming capacity of a lubricated system of meso- or microscale. If the liquid mol...
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Article
Localized Boundary Effect on Elastohydrodynamic Lubricated Film Shape
The study aimed to determine the formation of an adsorption film at elastohydrodynamic lubricated (EHL) contacts and its effects on EHL film shape and friction. Experiments were conducted on an optical EHL tes...
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Article
Experimental Study on Lubrication Film Thickness Under Different Interface Wettabilities
This paper describes some experimental studies about the effect of interface wettability on hydrodynamic lubrication film thickness by a custom-made slider bearing tester. The lubricated contact pair consists...
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Chapter and Conference Paper
Side Edge Effect on Elastic Contact Stress and Deformation
A convenient and fast solution for elastic quarter space contact problems is developed based on matrix representation. This new solution makes use of discretization into the form of matrices which conveniently...
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Article
Effect of Interfacial Properties on EHL Under Pure Sliding Conditions
This paper presents an experimental study of the effect of boundary slip on the lubricating film shape and friction of an elastohydrodynamic lubrication (EHL) contact under isothermal conditions. Ball and disc...
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Article
Study of Boundary Slippage Using Movement of a Post-Impact EHL Dimple Under Conditions of Pure Sliding and Zero Entrainment Velocity
A well-recognized phenomenon of typical traction tests of elastohydrodynamic lubrication (EHL) contacts is finite maximum traction at increasing speeds, which led to the postulation that the limiting shear str...
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Article
Movement of Entrapped Oil Under Pure Rolling Conditions
This article presents a study on the movement of an oil entrapment (or impact dimple) in a pure rolling elastohydrodynamic lubricated (EHL) contact. The oil entrapment was formed by impacting a steel ball agai...
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Article
Interferometry Measurement of Lubricating Films in Slider-On-Disc Contacts
Interferometry proves to be an efficient way to measure thin lubricant film thickness. However, there are very few reports on the film thickness measurement of conformal lubricated contacts using optical inter...
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Chapter and Conference Paper
Pressure Dependence of the Limiting Shear Stress Coefficient of Liquid Lubricants
This paper presents a single empirical model that correlates reasonably well with the pressure-limiting shear stress coefficients of different types of lubricants measured by different techniques. The model co...
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Article
Occurrence of Wall Slip in Elastohydrodynamic Lubrication Contacts
Preliminary experimental work has been carried out to identify some of the boundary slip phenomena of highly pressurised polybutenes in an elastohydrodynamic lubrication (EHL) conjunction. The movement of the ...
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Article
Theoretical Study on the Interferometry of Thin EHL Film Measurement
Interferometry has been widely utilized in elastohydrodynamic lubrication (EHL) film measurement since the 1960s. In-depth optical analyses are required to get more fundamentals of optical EHL film tests. In t...
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Article
Experimental Study of the Smoothing Effect of a Ceramic Rolling Element on a Bearing Raceway in Contaminated Lubrication
The effects of steel and ceramic rolling elements on protrusions from the raceway of a bearing were experimentally investigated. Such protrusions, which are normally caused by solid contaminants in the lubrica...
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Article
Non-classical Elastohydrodynamic Lubricating Film Shape Under Large Slide-roll Ratios
The authors showed in previous experiments with high viscosity polymeric lubricants that a non-classical elastohydrodynamic (EHL) film, which featured an inlet dimple, could be generated under pure sliding con...
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Chapter and Conference Paper
Variations of an EHL Film Under Boundary Slippage
The typical film shape in the classical EHL theory, featuring a parallel flat contact region and a constriction at the outlet, has been readily demonstrated by both numerical analyses and laboratory tests. Rec...
