Journal
CIRP ANNALS-MANUFACTURING TECHNOLOGY
Volume 63, Issue 1, Pages 225-228Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cirp.2014.03.051
Keywords
Laser beam machining; Manufacturing; Metal droplet
Funding
- ARRS - Slovenian Research Agency [P2-0241]
- COST Action [MP1106]
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Pendant droplet detachment regimes in the novel annular laser beam droplet generation from a metal wire are analyzed. In drop-on-demand generation, droplet detachment can be achieved via Rayleigh-Plateau instability based molten wire column break-up. Detachment dynamics are influenced by the distance between the annular laser beam focus and the pendant droplet neck. In the continuous generation of a droplet sequence, droplet detachment is governed by the laser pulse frequency, resulting in a spontaneous, resonant, or Rayleigh-Plateau instability based detachment regime. In addition to drop-on-demand generation, continuous droplet generation with spontaneous and mass-spring resonant detachment are suitable for metal droplet based engineering applications where accurate droplet diameter and deposition position are required. (C) 2014 CIRP.
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