期刊
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
卷 127, 期 5, 页码 -出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s00339-021-04455-3
关键词
Percussion drilling; Metals; Ultrashort laser pulses; Depth progress; Analytical model
资金
- Federal Ministry for Economic Affairs and Energy (BMWi) [ZF4592402FH8]
- German Research Foundation (DFG) [GR 3172/21-1]
A simplified analytical model is presented to predict the depth progress and final hole depth obtained by laser percussion drilling in metals with ultrashort laser pulses. Experimental validation confirms the accuracy of the model for percussion drilling in stainless steel with picosecond pulses.
A 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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