Numerical study of the dynamics of the hole formation during drilling with combined ms and ns laser pulses

•The impact of shock waves in drilling with ms and ns laser pulses was studied.•A numerical model was set up and compared to experimental findings.•A hole forms in drilling with combined laser pulses while not with a single ms pulse.•Melt ejections are induced by the shock waves generated by the ns...

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Veröffentlicht in:	Optics and laser technology 2019-04, Vol.112, p.8-19
Hauptverfasser:	Qin, Yuan, Förster, Daniel J., Weber, Rudolf, Graf, Thomas, Yang, Sen
Format:	Artikel
Sprache:	eng
Schlagworte:	Combined pulses Computational fluid dynamics Defocusing Ejection Focal plane Hole formation Laser drilling Lasers Mathematical models Numerical model Process parameters Shock wave Shock waves
Online-Zugang:	Volltext
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