The effect of micro dent arrays fabricated by laser shock peening on tribology

R. Caslaru, Y. B. Guo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

Surface micro dents may act as lubricant reservoirs to reduce friction and wear in sliding and rolling contact applications. Surface patterning has become a valuable technique for fabricating micro dents. Alternative methods such as micromachining present obvious limitations in comparison with laser shock peening (LSP). In this paper, the use of LSP along with an automatic X-Y table proves to be an attractive and reliable method for producing micro dent arrays with enhanced surface integrity and free of cracks. Surface topography, residual stress, and microhardness of the fabricated micro dent arrays on polished Ti-6Al-4V have been characterized. It was found that a 10% density of micro dent array reduces coefficient of friction compared with a smooth surface. However, a higher dent density not necessarily reduces coefficient of friction.

Original languageEnglish (US)
Title of host publicationProceedings of the ASME/STLE International Joint Tribology Conference 2009, IJTC2009
Pages451-453
Number of pages3
DOIs
Publication statusPublished - Jun 24 2010
Externally publishedYes
Event2009 ASME/STLE International Joint Tribology Conference, IJTC2009 - Memphis, TN, United States
Duration: Oct 19 2009Oct 21 2009

Publication series

NameProceedings of the ASME/STLE International Joint Tribology Conference 2009, IJTC2009

Conference

Conference2009 ASME/STLE International Joint Tribology Conference, IJTC2009
CountryUnited States
CityMemphis, TN
Period10/19/0910/21/09

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All Science Journal Classification (ASJC) codes

  • Colloid and Surface Chemistry
  • Fluid Flow and Transfer Processes
  • Surfaces and Interfaces

Cite this

Caslaru, R., & Guo, Y. B. (2010). The effect of micro dent arrays fabricated by laser shock peening on tribology. In Proceedings of the ASME/STLE International Joint Tribology Conference 2009, IJTC2009 (pp. 451-453). (Proceedings of the ASME/STLE International Joint Tribology Conference 2009, IJTC2009). https://doi.org/10.1115/IJTC2009-15113