Journal Article

PUBDB-2025-00792

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Laser driven melt pool resonances through dynamically oscillating energy inputs

Rupp, M. ; Schwarzkopf, K.Extern* ; Döring, M.Extern* ; Hayashi, S. ; Schmidt, M. ; Arnold, C. B. (Corresponding author)

2024
Soc. Dearborn, Mich.

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Please use a persistent id in citations: doi:10.1016/j.jmapro.2024.09.100

Abstract: Spatially selective melting of metal materials by laser irradiation allows for the precise welding as well as the 3Dprinting of complex metal parts. However, the simple scanning of a conventional Gaussian beam typically resultsin a melt track with randomly distributed surface features due to the complex and dynamic behavior of the meltpool. In this study, the implications of utilizing a dynamically oscillating energy input on driving melt trackfluctuations is investigated. Specifically, the laser intensity and/or intensity distribution is sinusoidally modulatedat different scan speeds, and the effect of modulation frequency on the resulting surface features of the melttrack is examined. The formation of periodically oriented surface features indicates an evident frequencycoupling between the melt pool and the modulation frequency. Moreover, such a frequency coupling becomesmost prominent under a specific modulation frequency, suggesting resonant behavior. The insights provided inthis study will enable the development of novel methods, allowing for the control and/or mitigation of inherentfluctuations in the melt pool through laser-driven resonances.

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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)434946896 - FOR 5134: Erstarrungsrisse beim Laserstrahlschweißen: Hochleistungsrechnen für Hochleistungsprozesse (434946896) (434946896)
3. DFG project G:(GEPRIS)236616214 - SFB 1120: Bauteilpräzision durch Beherrschung von Schmelze und Erstarrung in Produktionsprozessen (236616214) (236616214)

Experiment(s):

1. PETRA Beamline P07 (PETRA III)

Appears in the scientific report 2024

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Database coverage:
; Clarivate Analytics Master Journal List ; Current Contents - Electronics and Telecommunications Collection ; Current Contents - Engineering, Computing and Technology ; Essential Science Indicators ; IF >= 10 ; IF >= 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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