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Tribological effects of laser surface texturing and residual stress
- Source :
- Industrial Lubrication and Tribology. 70:126-132
- Publication Year :
- 2018
- Publisher :
- Emerald, 2018.
-
Abstract
- Purpose The purpose of this paper is to investigate the tribological effects of laser surface texturing (LST) and residual stress on functional surfaces. Design/methodology/approach Three different surface textures (circular dimple, elliptical dimple and groove) with two different textured area ratios (10 and 20 per cent) are designed and fabricated by a Picosecond Nd YAG Laser machine. The friction and wear performance of textured specimens is tested using a UMT-2 friction and wear testing machine in mixed lubrication. Findings Test results show that elliptical dimples exhibit the best performance in wear resistance, circular dimples in friction reduction and grooves in stabilization of friction. The surfaces with larger textured area density exhibit better performance in both friction reduction and wear resistance. The improved performance of LST is the coupled effect of surface texture and residual stress. Originality/value The findings of this study may provide guidance for optimal design of functional surface textures in reciprocating sliding contacts under mixed or hydrodynamic lubrication, which can be used in automotive and other industrial applications.
- Subjects :
- Materials science
Mechanical Engineering
Metallurgy
02 engineering and technology
Surface finish
Tribology
021001 nanoscience & nanotechnology
Surfaces, Coatings and Films
020303 mechanical engineering & transports
General Energy
0203 mechanical engineering
Dimple
Residual stress
Nd:YAG laser
Lubrication
Area density
0210 nano-technology
Groove (music)
Subjects
Details
- ISSN :
- 00368792
- Volume :
- 70
- Database :
- OpenAIRE
- Journal :
- Industrial Lubrication and Tribology
- Accession number :
- edsair.doi...........b80d6e6e9fea2c5b436c8fe054ed3c0c