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Journal of Tribology-transactions of The Asme 

American Society of Mechanical Engineers
About: Journal of Tribology-transactions of The Asme is an academic journal published by American Society of Mechanical Engineers. The journal publishes majorly in the area(s): Lubrication & Bearing (mechanical). Over the lifetime, 4431 publications have been published receiving 115220 citations.


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Journal ArticleDOI
TL;DR: In this paper, the authors present the state of the art in LST and the potential of this technology in various lubricated applications like mechanical seals, piston rings and thrust bearings.
Abstract: Surface texturing has emerged in the last decade as a viable option of surface engineering resulting in significant improvement in load capacity, wear resistance, friction coefficient etc. of tribological mechanical components. Various techniques can be employed for surface texturing but Laser Surface Texturing (LST) is probably the most advanced so far. LST produces a very large number of micro-dimples on the surface and each of these micro-dimples can serve either as a micro-hydrodynamic bearing in cases of full or mixed lubrication, a micro-reservoir for lubricant in cases of starved lubrication conditions, or a micro-trap for wear debris in either lubricated or dry sliding. The present paper reviews the current effort being made world wide on surface texturing in general and on laser surface texturing in particular. It presents the state of the art in LST and the potential of this technology in various lubricated applications like mechanical seals, piston rings and thrust bearings. The paper also describes some fundamental on going research around the world with LST.

1,123 citations

Journal ArticleDOI
TL;DR: Based on the scale-independent fractal roughness parameters, a new model of contact between isotropic rough surfaces is developed in this article, which predicts that all contact spots of area smaller than a critical area are in plastic contact.
Abstract: Based on the scale-independent fractal roughness parameters, a new model of contact between isotropic rough surfaces is developed. The model predicts that all contact spots of area smaller than a critical area are in plastic contact

1,034 citations

Journal ArticleDOI
TL;DR: In this article, an elastic-plastic asperity microcontact model for contact between two nominally flat surfaces is presented, where the transition from elastic deformation to fully plastic flow of the contacting as perity is modeled based on contact-mechanics theories in conjunction with the continuity and smoothness of variables across different modes of deformation.
Abstract: This paper presents an elastic-plastic asperity microcontact model for contact between two nominally flat surfaces. The transition from elastic deformation to fully plastic flow of the contacting asperity is modeled based on contact-mechanics theories in conjunction with the continuity and smoothness of variables across different modes of deformation. The relations of the mean contact pressure and contact area of the asperity to its contact interference in the elastoplastic regime of deformation are respectively modeled by logarithmic and fourth-order polynomial functions. These asperity-scale equations are then used to develop the elastic-plastic contact model between two rough surfaces, allowing the mean surface separation and the real area of contact to be calculated as functions of the contact load and surface plasticity index. Results are presented for a wide range of contact load and plasticity index, showing the importance of accurately modeling the deformation in the elastoplastic transitional regime of the asperity contacts. The results are also compared with those calculated by the GW and CEB models, showing that the present model is more complete in describing the contact of rough surfaces.

638 citations

Performance
Metrics
No. of papers from the Journal in previous years
YearPapers
202286
2021148
2020108
2019157
2018158
2017160