Results 11 to 20 of about 5,656 (140)

Speed and Atmosphere Influences on Nanotribological Properties of NbSe2 [PDF]

open access: yes, 2009
Nanotribological properties of NbSe2 are studied using an atomic friction force microscope. The friction force is measured as a function of normal load and scan speeds ranging from 10 nm s−1 to 40 μm s−1 under two atmospheres (air and argon).
Bade, François   +4 more
core   +2 more sources

Optimization algorithms for the solution of the frictionless normal contact between rough surfaces [PDF]

open access: yes, 2015
This paper revisits the fundamental equations for the solution of the frictionless unilateral normal contact problem between a rough rigid surface and a linear elastic half-plane using the boundary element method (BEM).
Bemporad, A., Paggi, M.
core   +2 more sources

The air gap between tape and drum in a video recorder [PDF]

open access: yes, 1991
Lubrication with ambient air is not quite generally applied. The best known application is the "oil bearing" in tape recording systems for audio, video and computer applications; where the gap height that is needed for effective lubrication may quite ...
Moes, H.
core   +3 more sources

Modeling friction: From nanoscale to mesoscale [PDF]

open access: yes, 2013
The physics of sliding friction is gaining impulse from nanoscale and mesoscale experiments, simulations, and theoretical modeling. This Colloquium reviews some recent developments in modeling and in atomistic simulation of friction, covering open-ended ...
Manini, Nicola   +4 more
core   +2 more sources

Wear effects and mechanisms of soot-contaminated automotive lubricants [PDF]

open access: yes, 2006
A study has been carried out to investigate the influence of soot-contaminated automotive lubricants in the wear process of a simulated engine valve train contact. Previous research on this topic has been mainly performed from a chemical point of view in
Dwyer-Joyce, R.S.   +2 more
core   +1 more source

Advances in DFT-Based Computational Tribology: A Review

open access: yesLubricants
The rapid advancement of micro/nano-electromechanical systems (MEMS/NEMS) and precision manufacturing has fundamentally challenged traditional friction theories at the nanoscale. Classical continuum models fail to capture energy dissipation mechanisms at
Haochen Feng   +3 more
doaj   +1 more source

STUDIES OF SELECTED TRIBOLOGICAL CHARACTERISTICS OF SPIROID GEARS IN THE ASPECT OF MOLECULAR-MECHANICAL THEORY OF FRICTION

open access: yesTransport Problems
Spiroid gears are used in various machine drive systems in the automotive and aviation industries. They are characterised by their small size and ability to achieve high gear ratios while maintaining the positioning accuracy of the driven device. This type of gear can operate continuously or at intervals. During the operation at intervals, dry friction
Aleksander MAZURKOW, Wojciech HOMIK
openaire   +1 more source

Anti‐Slip Material‐Based Strategies and Approaches

open access: yesAdvanced Materials Technologies, EarlyView.
This review highlights the principle mechanisms of slipping at the microscale, linking contact mechanics with a friction behavior model for surface interfaces. Main strategies to develop anti‐slip properties to the surfaces are discussed alongside standardized testing approaches.
Sogand Abbaspoor‐Zanjani   +3 more
wiley   +1 more source

Wear mechanisms and transitions in railway wheel steels [PDF]

open access: yes, 2004
The need to improve safety and reduce costs means that new specifications are being imposed on railway wheel wear. These mean that more durable wheel steels are required.
Dwyer-Joyce, R.S., Lewis, R.
core   +1 more source

A Biomimetic Lubricant Captures Hyaluronic Acid In Situ to Regenerate Cartilage: From Bench to Bedside

open access: yesAdvanced Science, EarlyView.
(a) The outstanding lubricative properties of natural articular cartilage arise from a composite coating composed of HA, lubricin, and phospholipids at its surface. Notably, lubricin facilitates the enrichment of synovial HA onto cartilage surfaces, and HA complexes with phospholipids, a key component to maintain extremely low friction under high ...
Yongan Lin   +12 more
wiley   +1 more source

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