Showing papers in "Tribology International in 2017"

TL;DR: In this paper, the impact of wear on the global energy consumption due to friction and wear in the mineral mining industry is investigated, and the authors present a detailed analysis of a large variety of mining equipment used for the extraction, haulage and beneficiation of underground mining, surface mining and mineral processing.

TL;DR: A comprehensive review of the state-of-the-art online sensors for measuring lubricant properties (e.g. wear debris, water, viscosity, aeration, soot, corrosion, and sulfur content) is presented in this paper.

TL;DR: In this article, a review of the literature about self-lubricating metallic composites containing MoS2 is presented, in particular those analyzing the possible reactions during processing, which are often neglected or even unknown in a variety of publications.

TL;DR: In this paper, a ball-on-disk tribometer was employed to evaluate the performance and mechanisms of innovative TiO 2 nano-additive water-based lubricants, which can significantly reduce the coefficient of friction (COF).

TL;DR: In this paper, the effects of variable coefficient of friction (CoF) were considered in both gross sliding and partial slip conditions of fretting wear, and the wear scar and wear volume predicted by FEM models for constant and variable CoF cases were calculated.

TL;DR: In this paper, the erosive and abrasive wear behavior of HVOF deposited WC-12Co, WC-10Co, 4Cr and Cr 3 C 2 −25NiCr coatings was investigated.

TL;DR: In this article, a comparison between the results from numerical modelling and experiments to shed light on the mechanisms by which surface texture can reduce friction when applied to an automotive cylinder liner is presented.

TL;DR: In this article, the authors investigated the effectiveness of this cooling strategy in comparison with dry cutting in semi-finishing turning different Ti6Al4V microstructural variants produced by two additive manufacturing (AM) techniques, namely Direct Metal Laser Sintering (DMLS) and Electron Beam Melting (EBM).

TL;DR: In this paper, the authors investigated the different stick-slip behaviors of polyethylene, synthetic rubber and fiber resin composite (FRC) polymer materials with ZCuSn10Zn2 plates under water-lubricated conditions on an UMT-3 tribo-tester.

TL;DR: In this article, the effect of surface roughness on the fretting wear profile is investigated and a multiscale procedure is proposed to study roughness effect on the wear profile of a cylinder on plane contact configuration.

TL;DR: In this article, a simulation of the wear process of the engine components is considered as a good alternative for experimental testing which is costly and time-consuming, but it requires a reliable experimental data for model fine-tuning.

TL;DR: In this paper, the authors present an experimental study into the flow behavior of lubricant in a reciprocating contact simulating a piston ring-cylinder liner pair, where the authors use a fluorescence microscope to image the distribution of dyed oil.

TL;DR: In this paper, a multiobjective optimization approach is used to determine the optimal surface texturing parameters to improve performance of journal bearing and the numerical attempts are made using Taguchi's orthogonal array L27.

TL;DR: In this article, two kinds of oil-soluble ionic liquids (ILs) with the same cation but different anions are synthesized, and then they are added into PAO10 as additives with different mass concentration.

TL;DR: In this paper, an amino-terminated block copolymer was successfully grafted onto graphene surface with the content as high as 81.9% and 91% compared with water, which may be due to the formation of tribo-film on the contact interface.

TL;DR: In this paper, optical microscopy, confocal laser scanning microscopy (CLSM), microindentation and image segmentation were employed to investigate the different structures existing on the worn surface of a non asbestos organic (NAO) and a low metallic (LM) brake pad.

TL;DR: In this paper, the physicochemical and tribological performances of three plant seed based oils in the lubricating contact pair AISI E52100 steel sliding against X210Cr12 steel were investigated.

TL;DR: In this article, the authors assess the frictional behaviour of coatings based on graphene/UHMWPE composites and sprayed graphene, which maintain the high performance of the UHMW PE matrix.

TL;DR: In this paper, the ionic liquid (IL) 1-octyl-3methylimidazolium tetrafluoroborate (5-wt%) or a 5-wt% dispersion of 0.1% graphene in IL (IL+G) have been evaluated as friction-reducing and anti-wear additives of an additive-free isoparaffinic base oil (B), at room temperature, and a fully-formulated lubricant oil (FFO) at 150°C.

TL;DR: In this article, the authors describe the results of the testing activities performed on a fully formulated engine oil incorporating MoS2 nanoparticles and demonstrate a reduction of 0.9% of fuel consumption with respect to the reference lubricant without nanoparticles.

TL;DR: In this article, a dry Ti-6Al-4V cylinder/plane contact was analyzed and the sliding frequency, contact size, and cyclic normal force effects were investigated to predict wear rate and the U-to-W shape transition.

TL;DR: In this article, the surface textures of cylinder liners were obtained using an oscillating wear tester under lubricated conditions, and it was found that one-process textures led to smaller coefficients of friction than two-process topographies for test duration of 0.5h.

TL;DR: In this article, the authors studied the methods used to extract fractal dimensions from surface profiles and the applicability of fractals to measured surfaces and found that real measured rough surfaces are not easily represented as perfect fractals as researchers and engineers often assume.

TL;DR: In this paper, the effect of nano-SiO 2 on surface qualities including topography, microstructure and oxide scale of rolled strips was investigated. And the results showed that the surface topography becomes smooth with the addition of nanoparticles into base lubricant when the concentration of nanoSiO2 is less than 0.5

TL;DR: In this article, the effect of carbon contents on the structure and tribocorrosion properties of TiSiCN coatings were studied and the results of the results indicated that the volume loss was attributed to main wear loss and a little corrosion loss, and the synergy between wear and corrosion is a key factor in degenerating the TiSiC coating.

TL;DR: In this paper, nanosized MoS 2 deposited on graphene (MoS 2 /Gr) were prepared and used as additives in polyalkylene glycol (PAG) for steel/steel contact.

TL;DR: In this article, amino functionalized silane layer (KH550) was immobilized covalently onto hybrid Nomex/PTFE fabric surfaces using bio-inspired polydopamine (PDA) as a bridge to introduce substantial amino groups onto the fabric surfaces.

TL;DR: In this paper, a finite volume method based on the Finite Volume Method (FVM) was used to investigate the oil distribution and churning losses inside a single-stage gearbox of the FZG back-to-back efficiency gear test rig.

TL;DR: In this article, a numerical approach was proposed for the optimization of shape contour of recessed surface texture under unidirectional sliding, which was developed based on a genetic algorithm to improve the tribological performance.

TL;DR: In this article, high-temperature sliding experiments have been carried out to study both direct and back adhesion transfer between Al-Mg alloy metal and the ball bearing steel sample, and it was shown that a transfer layer consisting of aluminum alloy formed on the trailing hemisphere of the steel ball and then could stick back to the wear groove surface of the disk.