Journal ArticleDOI
Improving Tribological Performance of Mechanical Components by Laser Surface Texturing
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TLDR
In this paper, a feasibility study was performed both theoretically and experimentally using the Laser Surface Texturing (LST) technique to produce the micro-dimples on their surfaces, which can serve either as a micro-hydrodynamic bearing in cases of full or mixed lubrication.Abstract:
Significant improvement in load capacity, wear resistance, friction coefficient etc. of tribological mechanical components can be obtained by forming regular micro-surface structure in the form of micro-dimples on their surfaces. A feasibility study was performed both theoretically and experimentally using the Laser Surface Texturing (LST) technique to produce the micro-dimples. Each micro-dimple can serve either as a micro-hydrodynamic bearing in cases of full or mixed lubrication or as a micro-reservoir for lubricant in cases of starved lubrication conditions. Theoretical models were developed, and laboratory tests were performed, to investigate the potential of LST in tribological components like mechanical seals, piston rings and thrust bearings. In the entire laboratory tests, friction was substantially reduced with LST compared to the non-textured components.read more
Citations
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Journal ArticleDOI
A critical assessment of surface texturing for friction and wear improvement
TL;DR: In this paper, the effects of surface textures under the operative lubrication regimes in the Stribeck curve, with a clear distinction between conformal-and non-conformal contacts, are discussed.
Journal ArticleDOI
Experimental Investigation of Laser Surface Texturing for Reciprocating Automotive Components
TL;DR: In this paper, an experimental study is presented to evaluate the effectiveness of micro-surface structure, produced by laser texturing, to improve tribological properties of reciprocating automotive components, including piston rings and cylinder linings.
Journal ArticleDOI
A Laser Surface Textured Hydrostatic Mechanical Seal
Izhak Etsion,G. Halperin +1 more
TL;DR: In this article, a mechanical seal subjected to laser surface texturing over an annular portion of one of its mating rings is theoretically and experimentally investigated, and it is found that optimally textured seals generate substantially less friction and heat.
Book ChapterDOI
Fundamentals of Laser-Material Interaction and Application to Multiscale Surface Modification
Matthew S. Brown,Craig B. Arnold +1 more
TL;DR: In this article, the fundamental principles governing laser propagation and absorption as well as the resulting material responses are discussed, and two case studies of improving efficiency in photovoltaic and optoelectronic devices are presented.
Journal ArticleDOI
An Experimental Investigation of Dimple Effect on the Stribeck Curve of Journal Bearings
Xiaobin Lu,Michael M. Khonsari +1 more
TL;DR: In this paper, the effect of dimples on the Stribeck curve of a journal bearing with dimpled bushings has been investigated and a series of experimental results have been presented to examine the effect.
References
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Journal ArticleDOI
Effect of surface texturing on friction reduction between ceramic and steel materials under lubricated sliding contact
TL;DR: In this article, the effect of micro-dimples on the frictional properties of a silicon nitride ceramic mated with hardened steel was investigated and it was found that the porosity depended greatly on the size and density of the microdimples, whilst the dimple shape did not significantly affect the friction coefficient regardless of rounded or angular profiles.
Journal ArticleDOI
Analytical and Experimental Investigation of Laser-Textured Mechanical Seal Faces
TL;DR: An analytical model is developed to predict the relation between the opening force and operating conditions in a mechanical seal with laser textured micro surface structure in the form of micropores.
Journal ArticleDOI
Influence of surface texture on boundary lubricated sliding contacts
TL;DR: The friction and wear behavior of boundary lubricated sliding surfaces is influenced by the surface texture as mentioned in this paper, by introducing controlled depressions and undulations in an otherwise flat surface, the...
Journal ArticleDOI
A Laser Surface Textured Parallel Thrust Bearing
TL;DR: In this article, the potential use of a new technology of laser surface texturing (LST) in parallel thrust bearings is theoretically investigated, where the surface texture has the form of micro-dimples with pre-selected diameter, depth, and area density.
Journal ArticleDOI
Friction-Reducing Surface-Texturing in Reciprocating Automotive Components
TL;DR: In this article, a model is presented to study the potential use of micro-surface structure in the form of micro pores to improve tribological properties of reciprocating automotive components, where the Reynolds equation and the equation of motion are solved simultaneously for a simplified “piston/cylinder” system with surface texturing.