Results 91 to 100 of about 55,265 (308)

Tribological behaviour of copper oxide nanoparticle suspension [PDF]

open access: yes, 2008
This work presents and discusses the tribological behaviour of nanoparticle suspensions in a polyalphaolefin (PAO6). CuO nanoparticles were separately dispersed at 0.5, 1.0 and 2.0% wt. in PAO6 using an ultrasonic probe for 2 minutes.
Fernandez, J.E.   +2 more
core  

Buoyancy-driven crack propagation: the limit of large fracture toughness [PDF]

open access: yes, 2007
We study steady vertical propagation of a crack filled with buoyant viscous fluid through an elastic solid with large effective fracture toughness. For a crack fed by a constant flux Q, a non-dimensional fracture toughness K=Kc/(3μQm3/2)1/4 describes the
Lister, J.R., Roper, S.M.
core   +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

Transient elastohydrodynamic lubrication analysis of a novel metal-on-metal hip prosthesis with a non-spherical femoral bearing surface

open access: yes, 2011
Effective lubrication performance of metal-on-metal hip implants only requires optimum conformity within the main loaded area, while it is advantageous to increase the clearance in the equatorial region.
Anissian H.L.   +20 more
core   +1 more source

Mixed lubrication after rewetting of blotted pleural mesothelium

open access: yesRespiratory Physiology & Neurobiology, 2013
Coefficient of kinetic friction (μ) of pleural mesothelium blotted with filter paper, and rewetted with Ringer solution markedly increases; this increase is removed if a sufficient amount of sialomucin or hyaluronan is added to Ringer (Bodega et al., 2012. Respiratory Physiology and Neurobiology 180, 34-39).
F. Bodega   +5 more
openaire   +3 more sources

An assessment of the effect of surface topography on coefficient of friction for lubricated non-conformal contacts

open access: yesFrontiers in Mechanical Engineering
Determining an accurate state of lubrication is of utmost importance for the precise functionality of machine elements and to achieve elongated life and durability.
Deepak K. Prajapati   +2 more
doaj   +1 more source

UTact: Underwater Vision‐Based Tactile Sensor with Geometry Reconstruction and Contact Force Estimation

open access: yesAdvanced Robotics Research, EarlyView.
Embedded flexible sensing technologies advance underwater soft robotics, yet most systems still suffer from hysteresis and limited perceptiveness. Instead, vision‐based tactile sensors provide reliable and rapid feedback essential for complex underwater tasks.
Qiyi Zhang   +5 more
wiley   +1 more source

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