Tribology Letters

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Conveyor Belt Drive Physics
Tribology Letters - Tập 68 - Trang 1-9 - 2020
B. N. J. Persson
We study a simple model of a conveyor belt. We calculate the relation between the torque M and the belt–pulley slip s. We present numerical results for the M(s) relation, and for the frictional energy dissipation as a function of the slip, which is important for the rubber wear. The theory includes both the belt compliance and the pulley tread block stiffness. The theory shows that to minimize the...... hiện toàn bộ
Running-In of Systems Protected by Additive-Rich Oils
Tribology Letters - Tập 41 - Trang 263-282 - 2010
Rob Bosman, Dirk Jan Schipper
Recent research on mild wearing systems running under boundary lubrication conditions focus more and more on the role of the nano-crystalline layer present at the surface of the components in contact. This layer has a typical thickness of a few tenths of nano-meters up to a few microns depending on the operational conditions. The role of this layer with respect to wear is, however, still unclear a...... hiện toàn bộ
The Contribution of Thin PFPE Lubricants to Slider-Disk Spacing. 2. Effect of Film Thickness and Lubricant End Groups
Tribology Letters - Tập 13 - Trang 197-202 - 2002
R.J. Waltman, A.G. Khurshudov
We have investigated the effect of film thickness of a perfluoropolyether lubricant, Zdol 4000, on slider-disk spacing, or clearance. The major conclusion of this work is that the Zdol lubricant impacts the slider-disk spacing. A decrease in the film thickness of Zdol 4000 by ∼10Å results in an increase in the effective slider-disk spacing by ∼1 nm. The effect of end groups on slider-disk spacing ...... hiện toàn bộ
Rheology of an Ionic Liquid with Variable Carreau Exponent: A Full Picture by Molecular Simulation with Experimental Contribution
Tribology Letters - Tập 64 - Trang 1-12 - 2016
Nicolas Voeltzel, Philippe Vergne, Nicolas Fillot, Nathalie Bouscharain, Laurent Joly
The rheological behavior of an ionic liquid was investigated by means of molecular dynamics simulations with experimental contribution, under conditions close to those found in the elastohydrodynamic and the very-thin film lubrication regimes. The molecular model was applied to nearly 200 temperature–pressure–shear rate cases, without any parameter adjustment. Experiments were conducted on a rheo...... hiện toàn bộ
Scanning force microscope observations of corrosive wear on single-crystal brushite (CaHPO4·2H2O) in aqueous solution
Tribology Letters - Tập 6 - Trang 41-55 - 1999
L. Scudiero, S.C. Langford, J.T. Dickinson
Simulation of Sinuous Flow in Metal Cutting
Tribology Letters - Tập 66 - Trang 1-13 - 2018
A. S. Vandana, Narayan K. Sundaram
Sinuous flow is a recently discovered mode of unsteady plastic flow in the cutting of metal involving large plastic strains, extensive material folding, and consequences ranging from paradoxically large cutting forces to poor surface finish. Here we use full-scale simulations to show how sinuous flow, and the concomitant redundant plastic deformation in cutting, are caused by microstructure-relate...... hiện toàn bộ
Effect of Mechanical Properties on Cavitation Erosion Resistance in γ → α′ Phase Transformable Fe–Cr–C–Mn Alloys
Tribology Letters - Tập 57 - Trang 1-5 - 2015
Gyeong Su Shin, Jae Yong Yun, Myung Chul Park, Seon Jin Kim
The effect of mechanical properties on cavitation erosion resistance was investigated for γ → α′ phase transformable Fe–Cr–C–5Mn alloys. When comparing Fe–8Cr–0.7C–5Mn to Fe–16Cr–0.7C–5Mn, the volume fraction of transformed α′-martensite decreased with increasing Cr due to the decrement of the stacking fault energy. In previous study, cavitation erosion resistance increased with increasing volume ...... hiện toàn bộ
Fretting Wear Study on Micro-Arc Oxidation TiO2 Coating on TC4 Titanium Alloys in Simulated Body Fluid
Tribology Letters - Tập 40 - Trang 319-326 - 2010
Guanghong Zhou, Hongyan Ding, Yue Zhang, Aihui Liu, Yuebin Lin, Yufu Zhu
Tribological properties of TiO2 coatings synthesized by micro-arc oxidation (MAO) on the surface of TC4 titanium alloys were investigated at the fretting contact against 440C stainless steel in simulated body fluid (SBF). Fretting experiments were carried out by ball-on-flat contact at various loads for 1 h, with an amplitude of 100 μm and a frequency of 5 Hz. Results show that MAO TiO2 coatings p...... hiện toàn bộ
Friction and Lubrication of Eye/Lens/Lid Interface: The Effect of Lubricant and Contact Lens Material
Tribology Letters - Tập 71 - Trang 1-18 - 2023
David Nečas, Vlastimil Kulíšek, Petr Štěpán, František Ondreáš, Pavel Čípek, Gloria Huerta-Angeles, Martin Vrbka
Irritation of the eye in the case of contact lens users may imply dry eye syndrome (DES), commonly treated by eye drops. The paper focuses on measuring the friction coefficient with the simultaneous observation of lubricating film formation of the simulated eye/lens/lid interface. The experiments are performed in a pin-on-plate setup under the linear reciprocal motion. The contact is lubricated by...... hiện toàn bộ
Effect of Sliding Speed and Applied Load on Dry Sliding Tribological Performance of TiAl Matrix Self-lubricating Composites
Tribology Letters - Tập 55 - Trang 393-404 - 2014
Zengshi Xu, Xiaoliang Shi, Qiaoxin Zhang, Wenzheng Zhai, Xixing Li, Jie Yao, Long Chen, Qingshuai Zhu, Yecheng Xiaov
More durable, low-friction self-lubricating materials in modern industry are greatly needed for tribological systems. The current paper presents the tribological performance of TiAl matrix self-lubricating composites (TSC) containing MoS2, hexagonal BN and Ti3SiC2 designated as MhT against GCr15 steel counterface under several sliding speeds from 0.2 to 0.8 m s−1 and applied loads from 6 to 12 N. ...... hiện toàn bộ
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