Showing papers in "Wear in 2016"

TL;DR: In this article, a new nano-additive for improved internal combustion engine oils designed for increased fuel economy and a cleaner environment was investigated under reciprocating test conditions to simulate a piston ring/cylinder liner contact.

TL;DR: In this article, a comprehensive characterisation of HVOF-and HVAF-sprayed Cr3C2-25 wt.% NiCr hardmetal coatings is presented.

TL;DR: In this paper, the tribological behavior of a commercial brake pad material, wear tested under dry sliding conditions against a cast iron counterface disc with a pin-on-disc apparatus, was investigated.

TL;DR: In this paper, the interaction between laser-textured surface pockets and friction and wear behavior of an automotive piston-liner pairing was investigated using a reciprocating test apparatus, which was used to conduct wear tests under highly loaded conditions.

TL;DR: In this article, the effects of particle size on the erosion characteristics, such as erosion pattern, erosion rate, erosion mechanism and erosion profile, were investigated using both experiments and numerical simulations.

TL;DR: In this paper, the effect of slip ratio on the wear and rolling contact fatigue (RCF) of wheel/rail materials using a rolling-sliding wear testing apparatus was evaluated. And the results indicated that two wear types are presented in terms of wear rate: type I (mild wear) and type II (severe wear).

TL;DR: Aramid fiber/pulp (AF*) is one of the most important ingredients, of non-asbestos organic (NAO) friction materials (FMs), in spite of its relatively high cost, it is invariably added to good quality FMs (~3-wt%) because it improves their wear resistance and processability as mentioned in this paper.

TL;DR: A detailed review of the development of the laws of friction and their application can be found in this paper based on a detailed study of Leonardo da Vinci's notebooks, where the authors examine the development and application of their understanding of friction.

TL;DR: In this article, the potential of two new FM fillers (conductive rock-fibers and thermo-graphite-TG) was tested on a brake dynamometer using standard test schedule (JASO 406).

TL;DR: In this paper, the friction and wear behaviors of 316L stainless steel processed both by selective laser melting and traditional methods have been investigated using a ring-on-disc rig under lubricated conditions.

TL;DR: In this paper, the tribological behavior of pure magnesium and its composites reinforced with 5, 10 and 15% SiC particulates with a mean diameter of 7.8µm was investigated under normal loads of 5-60 n at sliding speed of 0.4m/s and at wear temperatures of 25-200 n.

TL;DR: In this paper, three-dimensional numerical analysis has been conducted for the prediction of erosion and its effect on the head and efficiency losses for lime slurry flow through centrifugal pumps.

TL;DR: In this paper, the effect of laser surface texturing on the friction behavior and the lifetime of grey cast iron reciprocating under starved lubrication conditions was investigated using a design of experiments (DoE) approach.

TL;DR: The effect of roughness on the friction and wear of the tribological system was evaluated in this paper, where WC-CoCr coatings were prepared with different surface roughness and submitted to dry sliding wear tests against a commercial friction material using a pin-on-disc configuration.

TL;DR: In this paper, the effect of wire wear on the surface morphology, roughness, and subsurface damage of single crystal silicon wafers was analyzed using scanning electron microscopy, Raman spectroscopy, confocal microscopy and focused ion beam machining (FIB).

TL;DR: In this paper, an FEM-based approach was proposed to predict the rate of flank wear evolution for uncoated cemented carbide tools in longitudinal turning processes, which combines the concept of experimental design and Response Surface Methodology (RSM) with Finite Element (FE) modelling of the cutting process, allowing for a fairly accurate tool wear prediction with a significantly lower computational cost compared to other available numerical methods.

TL;DR: In this paper, the tribocorrosion behavior of type 316L stainless steel and CrN coated 316L by PVD was investigated in seawater environment, and the results demonstrated that the friction coefficient decreased and wear-loss increased as the applied potential increased from −1-V to 0-V.

TL;DR: In this paper, a Tγ/A method of plotting wear data from a twin-disc machine for identifying the wear and damage transitions of wheel and rail materials was discussed, and three wear regimes (mild wear, severe wear and catastrophic wear) of U71Mn rail material were identified in dry rolling-sliding contact tests.

TL;DR: In this paper, the effect of micro-and nanosized MoS2 and WS2 particles on the dry-sliding tribological behavior against stainless steel (100Cr6) was investigated.

TL;DR: In this paper, four HVOF spray WC-10Co-4Cr coatings were deposited during deposition, WC (tungsten carbide) particles were mixed into the coating.

TL;DR: In this article, the authors present results of small scale tests carried out to assess the wear and RCF performance of rail which had been laser-cladged using a twin-disc method.

TL;DR: In this paper, a composite of SU-8+15-15-wt% graphite and 15-15 -wt% talc has been used for fabricating micro-electro-mechanical systems.

TL;DR: In this paper, the cavitation erosion behavior of martensitic and ferritic stainless steels and HVOF coatings prepared from pure Fe 3 Al powder and reinforced with nitride and boride phases was investigated using the G32 vibratory setup.

TL;DR: In this article, a white etching layer (WEL) was formed on the top surface of a pearlitic rail steel, which appeared in white color under an optical microscope.

TL;DR: In this article, the authors show experimental campaign where cavitation erosion in water at different temperatures was investigated, and they found out that the temperature of the water significantly influences the cavitation aggressiveness.

TL;DR: In this paper, MoS2/Pb composite coatings with various Pb contents were synthesized by unbalanced magnetron sputtering system and the microstructures of the coatings change from a loose columnar structure for pure MoS 2 to a compact featureless structure for Pb doped Mo S2.

TL;DR: In this paper, the dynamic response of bolted joints subjected to torsional excitation was investigated experimentally and numerically, where the effects of the initial preload and the angular amplitude on axial force loss of the bolt were studied.

TL;DR: In this paper, the effects of maintenance grinding are investigated experimentally for both standard and heat-treated pearlitic rails, and the results show essentially different behaviour for both steels, on standard grades, friction-induced martensite (FIM) generated during grinding delaminates when in service.

TL;DR: In this paper, the main influencing factors on surface quality and surface layer transformation in rail grinding were identified and recommendations on eligible rail grinding strategies are proposed that can lead to highly productive yet low-damage rail repair.

TL;DR: In this article, the authors identify one of the root causes for bearing premature failure characterized by sub-surface white etching cracks (WEC) and surface axial cracks leading to spalling on ring raceways.