Showing papers in "Wear in 1994"

TL;DR: In this paper, a primary 3D parameter set is proposed based on an understanding of intrinsic properties of surface topographic features and parameters, and the feasibility in terms of sampling conditions and the application scope of the parameters is discussed.

TL;DR: In this article, the authors described a comprehensive study of parameters used to characterize 3D surface topography in 3D. The feasibility and significance of the parameters in characterising surface topology in 3d are addressed by conducting experiments on a wide range of engineered surfaces.

TL;DR: In this article, the authors show that the primary role of liquid lubricants is to reduce plowing through the elimination of wear particles from the interface and also through the minimization of particle agglomeration.

TL;DR: In this article, the wear and seizure behaviour of binary Al-Si alloys containing up to 23% Si was investigated in sliding against a hard steel counterface by continuous loading experiments carried out in a pin-on-disc machine.

TL;DR: In this paper, a multilevel solver for the circular contact was extended to elliptical contact problems, and it was demonstrated how and when, for contacts with the entrainment directed perpendicular to the major principal axis of the contact ellipse, the pressure and film thickness on the centre-line of a contact can be predicted accurately from an equivalent line contact analysis.

TL;DR: In this paper, the effects of alloy composition, sliding distance, sliding speed and load on wear rate of Al-Si alloys have been investigated and it has been found that the wear rate is strongly dependent on alloy composition and applied load and sliding speed.

TL;DR: In this paper, the solid particle erosion behavior of four different types of polymer matrix composites reinforced with glass fibres has been characterized and compared with the available data in the literature on similar materials.

TL;DR: In this article, a theoretical model for estimating the abrasive wear resistance of multiphase materials and composites from the wear resistances of the constituents is proposed, and two rules for the dependence of the amount of reinforcing phase, corresponding to two wear modes are derived.

TL;DR: In this paper, the change of workpiece surface roughness caused by the increase of tool wear, through the variation of the vibration in finish turning, under different cutting conditions, was measured by two accelerometers attached to the tool.

TL;DR: In this paper, an optical elastohydrodynamic lubrication rig has been used to study the deformation and fracture of ductile and brittle lubricant-borne debris, which is referred to as closed three-body abrasive wear process.

TL;DR: In this article, the elastoplastic asperity-based model for the contact of rough surfaces is presented and compared with results obtained from other models, as well as with experimental results.

TL;DR: In this paper, the influence of the microstructure on the dry sliding wear resistance of a hypo-eutectic Stellite 6 alloy was investigated under conditions leading to severe metallic wear of the hardfacing alloy.

TL;DR: In this paper, the effect of two different sliding velocities on the friction and wear of ultrahigh molecular weight polyethylene (UHMWPE) has been investigated in a tri-pin-on-disc apparatus using bovine serum as the lubricant.

TL;DR: In this paper, the authors present a review of the mechanisms of fretting and fretting fatigue that accelerate the fatigue failure of orthopaedic implants, and also present a state-of-the-art review of many workers on this subject.

TL;DR: In this article, the role of lubricants and abrasive additions to the friction material and their effectiveness at a range of contact pressures/temperatures was examined in detail using energy dispersive X-ray (EDX) and Xray photoelectron spectroscopic (XPS) analytical techniques.

TL;DR: In this paper, the authors show that the initial size of the abrasion pattern, pattern spacing, equals the distance determined by the natural period of the rubber and the mean sliding velocity while the constant pattern spacing after the critical number of frictional slidings agrees with the distance given by the stick-slip oscillation and the means sliding velocity.

TL;DR: In this article, the time-dependent variations of friction coefficient and the contact resistance of a nickel-base high-temperature alloy, N80A, during like-on-like sliding in pure oxygen at temperatures of 20 −250 °C were simultaneously recorded and the tribological behaviour correlated with the nature of the sliding contact.

TL;DR: In this article, a general equation for the stick-slip amplitude (χ s ) in terms of substrate speed V o, spring stiffness K and damping γ, for an arbitrary μ s ( t ) and a linearized μ k ( V ), in contrast to a set of previous equations derived by Brockley et al.

TL;DR: Hardness is one of the key factors which influence the sliding behavior of different materials combinations as mentioned in this paper, and it can depend on temperature, sliding speed and the chemical environment, and the sign of hardness gradients adjacent to the sliding surface affects sliding behavior.

TL;DR: In this paper, an experimental investigation of EDM of titanium alloy with a copper-tungsten electrode in respect of metal removal rate, electrode wear, surface roughness by varying currents and electrode rotations is presented.

TL;DR: In this article, a series of experiments have been carried out, using a ball-on-disc testing machine, to investigate the sliding friction behavior of physically vapour-deposited TiN, CrN and (TiAl)N coatings against steel under both dry and lubricated conditions, employing various applied loads and sliding speeds.

TL;DR: In this paper, the plastic wave is introduced as a general mechanism for subsurface plastic working of the contact asperities on the sheet during friction contact, and the same mechanism is used to describe the transfer of sheet material to the tool surface.

TL;DR: In this article, the authors present a review of roll wear control, including roll material properties, roll pass design, and system factors such as temperature, loads and sliding velocity, which can be achieved by computer-aided graphical and statistical analyses of various pass series.

TL;DR: In this article, the wear characteristics of a glass-fiber-reinforced friction material were studied using a Chase friction material testing machine, and the results were consistent with low friction coefficients due to film formation on the worn surfaces of glass fiber at high temperatures.

TL;DR: In this article, the erosive wear rate of a material depends on the flux of particles striking the surface, and in order to measure an erosion rate, experiments should be carried out at low particle fluxes.

TL;DR: DenSys DS-200 coating is a proprietary hypersonic velocity oxygen fuel (HVOF) Cr 3 C 2 -NiCr cermet coating used in elevated temperature service environments including fluidized bed boilers, coal-fired boilers and municipal waste incinerators as discussed by the authors.

TL;DR: In this article, an analysis of the impact of a solid, elastic ball on an elastic, semi-infinite solid covered by a thin layer of lubricant is presented, which confirms the experimental observations of such pressure spikes reported in 1985 by Safa and Gohar.

TL;DR: In this article, the mechanism of rubber abrasion was reconfirmed not only in unfilled and filled NR but also in SBR and silicone rubber, and the initial pattern spacing agreed with the distance determined by the relation between the natural frequency of the material and the mean sliding velocity.

TL;DR: In this paper, the evolution of the dry sliding wear resistance of a sintered Distaloy AE with increasing total vol.% porosity (in the range 9 − 22 vol%) was studied.

TL;DR: In this article, the wear behaviour of a martensitic stainless steel, AISI 440C, was investigated under various contact conditions including rolling, sliding and combined rolling-sliding, at a wide range of applied loads.