TY  - JOUR
AU  - Rupp, Marco
AU  - Schwarzkopf, Karen
AU  - Döring, Markus
AU  - Hayashi, Shuichiro
AU  - Schmidt, Michael
AU  - Arnold, Craig B.
TI  - Laser driven melt pool resonances through dynamically oscillating energy inputs
JO  - Journal of manufacturing processes
VL  - 131
SN  - 1526-6125
CY  - Dearborn, Mich.
PB  - Soc.
M1  - PUBDB-2025-00792
SP  - 1624 - 1630
PY  - 2024
N1  - Waiting for fulltext 
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:001332322300001
DO  - DOI:10.1016/j.jmapro.2024.09.100
UR  - https://bib-pubdb1.desy.de/record/623826
ER  -