Micro wave patterns by vibrating-lens assisted laser machining

Hao Wu, Ping Zou*, Wentao Yan, Jian Cao, Kornel F. Ehmann

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


Surfaces with superimposed patterns offer, in many applications, numerous advantages over traditional smooth surfaces since they profoundly affect functional behavior, e.g., friction, wettability, etc. Different shapes and sizes of surface patterns were fabricated by traditional laser machining, however, micro wave patterns are difficult to generate by this process. In this paper, vibrating-lens assisted laser machining is proposed to generate such patterns and to extend its capabilities. A model, based on the traditional heat-flow principle, was built to ascertain the energy distribution in the process and predict the shapes of the wavy patterns generated. A specially developed experimental setup was used for model validation. Sinusoidal wave patterns were analyzed as an example to demonstrate geometrical feature under different parameters and the feasibility of the process. The feasibility of the proposed theoretical and experimental methodologies was illustrated through a comparative analysis of experimental and simulation scenarios.

Original languageEnglish (US)
Article number116424
JournalJournal of Materials Processing Technology
StatePublished - Mar 2020


  • Laser machining
  • Pattern simulation
  • Surface topography
  • Traditional heat-flow principle
  • Vibrating-lens

ASJC Scopus subject areas

  • Ceramics and Composites
  • Computer Science Applications
  • Metals and Alloys
  • Industrial and Manufacturing Engineering


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