Journal ArticleDOI
Contact and Rubbing of Flat Surfaces
TLDR
In this article, the authors compared the deduced dependence of the experimental observables on the load with the experimental evidence and concluded that the most realistic model is one in which increasing the load increases both the number and size of the contact areas.Abstract:
The interpretation of certain phenomena occuring at nominally flat surfaces in stationary or sliding contact is dependent on the assumed distribution of the real area of contact between the surfaces. Since there is little direct evidence on which to base an estimate of this distribution, the approach used is to set up a simple model and compare the deduced theory (e.g., the deduced dependence of the experimental observables on the load) with the experimental evidence. The main conclusions are as follows. (a) The electrical contact resistance depends on the model used to represent the surfaces; the most realistic model is one in which increasing the load increases both the number and size of the contact areas. (b) In general, mechanical wear should also depend on the model. However, in wear experiments showing the simplest behavior, the wear rate is proportional to the load, and these results can be explained by assuming removal of lumps at contact areas formed by plastic deformation; moreover, this particular deduction is independent of the assumed model. This suggests that a basic assumption of previous theories, that increasing the load increases the number of contacts without affecting their average size, is redundant.read more
Citations
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Journal ArticleDOI
A Comprehensive Method to Predict Wear and to Define the Optimum Geometry of Fretting Surfaces
TL;DR: In this paper, the effect of cyclic wear induced from fretting solicitations under the gross slip regime is considered and wear prediction is established on a friction-dissipated energy criteria.
Journal ArticleDOI
Cobalt-based orthopaedic alloys: Relationship between forming route, microstructure and tribological performance
Bhairav Patel,Gregory Favaro,Fawad Inam,Michael J. Reece,Arash Angadji,William Bonfield,Jie Huang,Mohan Edirisinghe +7 more
TL;DR: In this paper, the performance of cobalt-based alloys has been evaluated for their microstructure, hardness, tribological performance and the release of metallic content in metal-on-metal hip replacement devices.
Journal ArticleDOI
Tribological behaviour of epoxy based composites for rapid tooling
TL;DR: A tribological study of these materials was performed involving the neat resin, the aluminium filled resin and tri-phase composites composed by epoxy, aluminium particles and milled glass or carbon fibres as mentioned in this paper.
Journal ArticleDOI
Wear of solid phase formed high density polyethylene in relation to the life of artificial hips and knees
TL;DR: A programme of wear tests is described and the results are discussed in relation to the life of the HDPE acetabular cup of hip protheses and the plastic component of the Leeds knee.
Journal ArticleDOI
Nanoscratch behavior of carbon nanotube reinforced aluminum coatings
TL;DR: In this paper, the nano-scale wear resistance is shown to increase by 4 times by adding 10 wt.% carbon nanotubes (CNTs) to the scratches.
References
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Book
The friction and lubrication of solids
Frank Philip Bowden,David Tabor +1 more
TL;DR: Tabor and Bowden as mentioned in this paper reviewed the many advances made in this field during the past 36 years and outlined the achievements of Frank Philip Bowden, and reviewed the behavior of non-metals, especially elastomers; elastohydrodynamic lubrication; and the wear of sliding surfaces.
Journal ArticleDOI
The Nature of the Static and Kinetic Coefficients of Friction
TL;DR: In this article, the transition between static and kinetic conditions when stationary metal surfaces are set into motion is determined by measuring the energy that has to be given to one of the bodies to start it moving.
Journal ArticleDOI
On the Empirical Law of Adhesive Wear
J. T. Burwell,C. D. Strang +1 more
TL;DR: In this paper, the wear of rubbing steel surfaces as a function of load, distance of travel, and hardness under controlled conditions was measured and the effect of all factors except adhesion was analyzed.
Journal ArticleDOI
Metallic transfer between sliding metals: an autoradiographic study
Ernest Rabinowicz,David Tabor +1 more
TL;DR: In this article, a study of the friction and metallic transfer between sliding metal surfaces in the absence and in the presence of boundary lubricant films has been conducted, showing that the metallic transfer consists of a relatively small number of discrete particles and that the main function of a boundary lube is to reduce the amount of metallic interaction.
Journal ArticleDOI
Deformation of metals in static and in sliding contact
TL;DR: In this article, a detailed examination of the surface damage produced during sliding shows that metallic junctions are formed and sheared during the sliding process, and it is suggested that they are produced by a cold welding of the surfaces as a result of the high localized pressures developed at the points of real contact.