Journal Article/Contribution to a conference proceedings

PUBDB-2024-06090

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Synchrotron X-ray imaging of the formation of geometry deviations during percussion laser drilling with ultrashort pulses

Schneller, L. (Corresponding author)Extern* ; Henn, M.Extern* ; Spurk, C.Extern* ; Hummel, M.Extern* ; Olowinsky, A.Extern* ; Beckmann, F.HZG*Hereon* ; Moosmann, J.HZG*Hereon* ; Holder, D.Extern* ; Hagenlocher, C.Extern* ; Graf, T.

2024
[Verlag nicht ermittelbar] Osaka

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Please use a persistent id in citations: doi:10.2961/jlmn.2024.02.2010  doi:10.3204/PUBDB-2024-06090

Abstract: The main objective of this work is to provide a basic understanding of the mechanisms and locations of defect formation during percussion laser drilling of microholes using ultrashort pulses.Through the application of high-speed synchrotron X-ray imaging, we have been able to observe the dynamic formation and evolution of these defects in real-time. Our findings indicate that the initial deviations in the borehole geometry are highly dependent on the applied laser fluence. Specifically, while higher peak fluences facilitate deeper drilling, there exists a critical threshold beyond which the position of these deviations begins to decrease as the fluence increases. This behavior can be partially predicted within a certain fluence range using an existing theoretical model, which our experimental observations have tested and validated. Consequently, this research not only advances our understanding of defect formation in laser drilling but also provides a predictive framework for optimizing drilling parameters to minimize defects and enhance borehole quality.

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Contributing Institute(s):

1. DOOR-User (DOOR ; HAS-User)
2. Helmholtz-Zentrum Hereon (Hereon)

Research Program(s):

1. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)
2. DFG project G:(GEPRIS)236616214 - SFB 1120: Bauteilpräzision durch Beherrschung von Schmelze und Erstarrung in Produktionsprozessen (236616214) (236616214)
3. FS-Proposal: BAG-20211050 (BAG-20211050) (BAG-20211050)

Experiment(s):

1. PETRA Beamline P06 (PETRA III)

Appears in the scientific report 2024

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Database coverage:
; Clarivate Analytics Master Journal List ; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; Essential Science Indicators ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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