Results 71 to 80 of about 2,264,111 (240)
Effects of Hyaluronan Molecular Weight on the Lubrication of Cartilage-Emulating Boundary Layers
Biomacromolecules, 2020 Osteoarthritic joints contain lower-molecular-weight (MW) hyaluronan (hyaluronic acid, HA) than healthy joints. To understand the relevance of this HA size effect for joint lubrication, the friction and surface structure of cartilage-emulating surfaces ...
Zhang Liu +5 more
semanticscholar +1 more source
FrictionThe present study introduces a tribological comparison of five polyvinyl alcohol (PVA) hydrogel specimens with different physiological properties and possible candidate materials for cartilage replacement.
Daniel Němeček +8 more
doaj +1 more source
A coupled finite-volume CFD solver for two-dimensional elasto-hydrodynamic lubrication problems with particular application to rolling element bearings [PDF]
, 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
Tribology Online, 2016 Correlation between nano-mechanical and macro-tribological properties of the tribofilm derived from phosphoric additives was investigated. Macro friction test was performed at steel/steel contact under lubrication with poly-alpha olefin (PAO) containing ...
Chisaki Hashimoto +3 more
doaj +1 more source
Influence of roughness on contact interface in fretting under dry and boundary lubricated sliding regimes [PDF]
, 2009 This paper presents experimental results of wear process under dry and boundary lubricated metallic (AISI 1034/AISI 52100) contacting bodies with different surfaces morphologies subjected to a wide range of kinematic fretting conditions.
Kubiak, Krzysztof, Mathia, T.G.
core +1 more source
Experimental and numerical investigation of air layer drag reduction on a flat plate
Alexandria Engineering JournalReduction of Ship fossil fuel oil burning emissions has a significant impact to contain the global warming. Saving power by reducing ship resistance could basically reduce fossil fuel emissions.
Salaheldin A. Mohamad +3 more
doaj +1 more source
Boundary lubrication: Revisited [PDF]
A review of the various lubrication regimes, with particular, emphasis on boundary lubrication, is presented. The types of wear debris and extent of surface damage is illustrated for each regime.
Jones, W. R., Jr.
core +1 more source
Passive hydrodynamic synchronization of two-dimensional swimming cells
, 2010 Spermatozoa flagella are known to synchronize when swimming in close proximity. We use a model consisting of two-dimensional sheets propagating transverse waves of displacement to demonstrate that fluid forces lead to such synchronization passively ...
Elfring, Gwynn J., Lauga, Eric
core +1 more source
Boundary lubrication ability of lubricants on slideways.
TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C, 1988 The newly proposed boundary lubrication model in the previous reports is applied to many surfaces (slideways) and the boundary lubricating ability of lubricants is examined thoroughly. The secondary microconstruction of surface asperities and the load carrying pressure distribution of adsorbed lubricant film in contact are taken into consideration in ...
Etsuo MARUI +2 more
openaire +2 more sources
Corrosive–Abrasive Wear Induced by Soot in Boundary Lubrication Regime
Tribology letter, 2016 Soot is known to induce high wear in engine components. The mechanism by which soot induces wear is not well understood. Although several mechanisms have been suggested, there is still no consensus.
F. Motamen Salehi +3 more
semanticscholar +1 more source