Abstract
Liquid ejection is the most important mechanism in forming a hole in laser drilling. However, the particles ejected during cutting affects the power distribution of the incident laser beam at the workpiece because they shield the workpiece. The particle ejection mechanism defines the hole formation and therefore, quality hole drilling depends on this mechanism. In the present study, the particle ejection process is monitored using both a particle trapping technique and streak photography. This enables the ejection characteristics to be established and correlated with laser parameters. It was found that three distinguishable types of particle are ejected and the laser output energy and beam waist position have considerable influence on the ejection mechanism.
| Original language | English |
|---|---|
| Pages (from-to) | 57-67 |
| Number of pages | 11 |
| Journal | Lasers in Engineering |
| Volume | 7 |
| Issue number | 1 |
| State | Published - 1998 |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Industrial and Manufacturing Engineering
- Electrical and Electronic Engineering