Laser direct-write micro dents using laser shock peening: Experimental study and numerical simulations

M. P. Sealy, Y. B. Guo, C. Dumitrescu, P. V. Puzinauskas, S. C. Chen

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

Abstract

Laser shock peening (LSP) is an innovative surface treatment developed to improve surface integrity. The primary purpose of LSP in the literature is to impart compressive residual stresses below the surface of a material. This study explores the feasibility using LSP to direct-write surface micro dents for lubricant retention. Micro dents have been successfully fabricated on the aluminum 6061-T6 surfaces. LSP is a highly transient process with a pulse duration of 10-100 ns. As a consequence, the real time in-situ measurements of laser/material interaction is challenging. Therefore, FEA simulations of LSP were performed via 3D spatial and temporal shock pressure using user material and load subroutines. The results suggested there is an optimal peening time that produces the deepest dent.

Original languageEnglish (US)
Title of host publication2008 Proceedings of the ASME - 2nd International Conference on Integration and Commercialization of Micro and Nanosystems, MicroNano 2008
Pages635-639
Number of pages5
DOIs
Publication statusPublished - Dec 1 2008
Event2008 ASME 2nd International Conference on Integration and Commercialization of Micro and Nanosystems, MicroNano 2008 - Kowloon, Hong Kong
Duration: Jun 3 2008Jun 5 2008

Publication series

Name2008 Proceedings of the ASME - 2nd International Conference on Integration and Commercialization of Micro and Nanosystems, MicroNano 2008

Other

Other2008 ASME 2nd International Conference on Integration and Commercialization of Micro and Nanosystems, MicroNano 2008
CountryHong Kong
CityKowloon
Period6/3/086/5/08

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ASJC Scopus subject areas

  • Biotechnology
  • Electrical and Electronic Engineering

Cite this

Sealy, M. P., Guo, Y. B., Dumitrescu, C., Puzinauskas, P. V., & Chen, S. C. (2008). Laser direct-write micro dents using laser shock peening: Experimental study and numerical simulations. In 2008 Proceedings of the ASME - 2nd International Conference on Integration and Commercialization of Micro and Nanosystems, MicroNano 2008 (pp. 635-639). (2008 Proceedings of the ASME - 2nd International Conference on Integration and Commercialization of Micro and Nanosystems, MicroNano 2008). https://doi.org/10.1115/MicroNano2008-70157