Showing papers in "Wear in 1972"

TL;DR: In this paper, the effect of some of these variables may be predicted on simple fundamental grounds, and quantitative predictions may be made for the erosion of ductile metals by hard abrasive grains which strike at grazing angles.

TL;DR: In this article, the Greenwood and Williamson theory of random rough surfaces in contact has been combined with established elastohydrodynamic theory to provide a theoretical approach to highly loaded lubricated contacts in which the load is shared between hydrodynamic pressure and asperity contact.

TL;DR: In this paper, the authors investigated the effect of impact of relatively large single particles on an aluminum surface and found that the material removal action has the same physical characteristics as multiple impingement erosion of solid surfaces.

TL;DR: The Ferrograph as discussed by the authors is an instrument capable of precipitating magnetic particles ranging in size from a few micrometers down to approximately 20 nm from liquids such as lubricating oils.

TL;DR: In this paper, an examination of the friction and wear properties of carbon fiber-reinforced polymers sliding against metals in water, sea water and other aqueous solutions was made.

TL;DR: In this paper, the authors investigated the thermally conductive instability of sliding contact for the case of a scraper or blade sliding normal to its line of contact on a semi-infinite body.

TL;DR: In this article, the influence of the partial EHD condition on EHD film thickness, normal load sharing between asperities and EHD, frictional traction, mild and severe wear, surface fatigue and spalling fatigue are described.

TL;DR: In this article, the mechanism of the lubricating action of MoS2 was studied and compared with that of other materials by scanning electron microscopical investigation of specimens tested in the LFW-1, Almen-Wieland and a deep drawing machine.

TL;DR: In this paper, the main sources of information are from laboratory wear tests on materials and pumps, and from service experience on pumps and water-turbines, and the main points emerging from the survey are listed.

TL;DR: In this paper, the results of adhesion experiments conducted with various metals contacting a clean iron surface were discussed, including gold, silver, nickel, platinum, lead, tantalum, aluminum, and cobalt.

TL;DR: In this paper, the effect of running time and pressure on the film thickness of molybdenum disulfide was studied under extreme friction conditions, where the resulting Mo diffuses into the steel surface.

TL;DR: A comprehensive review of existing theories of elastomeric adhesion is presented in this article, with the objective of synthesizing the diverse research efforts devoted to this topic in various countries and of clarifying and simplifying the broad conclusions reached.

TL;DR: In this article, an investigation into the failure of sliding lubricated concentrated contacts (four-ball system) is made by studying friction and wear transitions in dependence of operating variables and material parameters.

TL;DR: In this article, the authors investigated the fretting wear behavior of mild steel from room temperature to 200°C, using contact resistance measurements and the scanning electron microscope to interpret the wear mechanism in relation to the observed progress of different wear scar parameters.

TL;DR: In this article, Spray and welded surface coatings are described in detail, their wear performance being more logically explained on the basis of microstructure, and the performance of a deposit in relation to its microconstituents is discussed and some formulae for predicting performance are also presented.

TL;DR: In this paper, the lubrication properties of Vitallium sliding on a cobalt-chrome alloy, with respect to artificial human joints, were studied, and the relevance of the findings in relation to the friction and wear in artificial hip and knee joints was discussed.

TL;DR: In this article, a digital record of the profile of a machined surface is processed by a computer to yield a number of wear-sensitive parameters such as mean slope and peak curvature.

TL;DR: In this article, the impact between a single point tool of known geometry which simulates an individual abrasive grit, and the surface of a stationary test material has been analyzed, and considerable care has been taken to reproduce conditions which are realistic of the process.

TL;DR: A simulator has been constructed for studying the behaviour of artificial joints and the evaluation of total hip prostheses, and data is presented on the wear behaviour of one type oftotal hip prosthesis.

TL;DR: In this article, the effects of slip length, frequency, surface pressure and shape of the longitudinal oscillatory motion on the fretting wear of steel were investigated by a specially designed fretting apparatus using an M.T. closed loop axial hydraulic testing system.

TL;DR: In this article, a testing machine was built to aid in the study of wear occurring on surfaces of repetitively loaded solid bodies, where bullet-shaped projectiles are bounced against a metal surface which is either stationary or rotating about an axis parallel to the approach of the projectiles.

TL;DR: A variety of organic fluids, including mineral oils and synthetic lubricants, are shown to be effective boundary lubricants for carbon fibre-reinforced polymers sliding against stainless steel as discussed by the authors.

TL;DR: In this paper, the authors examined the nature of and necessary conditions for pneumatic tire hydroplaning and analyzed the fluid flow in terms of the mean quantities over the film thickness.

TL;DR: In this article, a sliding system consisting of a stainless steel or glass spherical slider traversing a flat specimen of low density polythene is described, where the friction coefficient is of order μ = 0.4.

TL;DR: In this paper, a general theoretical solution for nonstationary elastohydrodynamic problems at high pressures in the contact zone is given for a ball-bearing rolling and a reversible ball sliding on a plane.

TL;DR: The shape, size, distribution and growth of individual micro-contact spots between a rough aluminium surface and a flat silver-steel surface pressed together under normal loads have been examined by the Nomarski interference technique as mentioned in this paper.

TL;DR: In this paper, boundary lubrication and wear of slow-moving concentrated (point and line) contacts of hardened steel have been studied as a function of geometry, load (stress condition), speed, composition and temperature of the lubricant, composition of the steel and oxygen content of the surrounding atmosphere.

TL;DR: A wide variety of organochlorine compounds has been tested in a tapping torque cutting test at 15 mg atoms chlorine per 100 g blend in liquid paraffin this paper, and the relative effectiveness of the blends was compared with that given by the same fluids in the four-ball extreme pressure test.