Optimisation of laser percussion drilling for improved reliability

2002 ◽  
Author(s):  
G. K. L. Ng ◽  
L. Li
Keyword(s):  
Laser Percussion Drilling ◽  
Percussion Drilling

Influence of process gas sort and pressure on laser percussion drilling

2008 ◽  
Author(s):  
K. Walther ◽  
C. Holtkoetter ◽  
I. Kelbassa ◽  
R. Poprawe
Keyword(s):  
Process Gas ◽  
Laser Percussion Drilling ◽  
Percussion Drilling

scholarly journals Analytical model for the depth progress of percussion drilling with ultrashort laser pulses

2021 ◽  
Vol 127 (5) ◽  
Author(s):  
Daniel Holder ◽  
Rudolf Weber ◽  
Thomas Graf ◽  
Volkher Onuseit ◽  
David Brinkmeier ◽  
...  
Keyword(s):  
Analytical Model ◽  
Experimental Validation ◽  
Laser Pulses ◽  
Ultrashort Laser Pulses ◽  
Picosecond Pulses ◽  
Hole Depth ◽  
Laser Percussion Drilling ◽  
Pulse Energies ◽  
Ultrashort Laser ◽  
Percussion Drilling

AbstractA simplified analytical model is presented that predicts the depth progress during and the final hole depth obtained by laser percussion drilling in metals with ultrashort laser pulses. The model is based on the assumption that drilled microholes exhibit a conical shape and that the absorbed fluence linearly increases with the depth of the hole. The depth progress is calculated recursively based on the depth changes induced by the successive pulses. The experimental validation confirms the model and its assumptions for percussion drilling in stainless steel with picosecond pulses and different pulse energies.

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