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Journal of Laser Applications, 2015 This study was undertaken to clarify the relationship among the laser-induced plume ejected from the keyhole, the melt flows in the molten pool, and the formation mechanisms of spatters ejected from the molten pool during 10 kW laser welding of a pure titanium plate.
Hiroshi Nakamura +3 more
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, 2020 Observations of active eruptions can provide insights into spatter and scoria cone formation. As Kilauea's 2018 East Rift eruption developed and the outflow of lava localized at Fissure 8, a spatte...
K. G. Bemis
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ICALEO 2000: Proceedings of the Laser Materials Processing Conference, 2000 This paper presents an investigation of the dynamics of drilling a visually transparent media using a CO2 laser source. This enabled the use of a high-speed imaging system for observing, in real time, the behaviour of the drilling process below the workpiece surface.
D. K. Y. Low, L. Li
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Effect of spattering on formation mechanisms of metal matrix composites in laser powder bed fusion
Journal of Materials Processing Technology, 2022 Li Shuai +4 more
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Fume formation from spatter oxidation during arc welding
Science and Technology of Welding and Joining, 2005Spatter and fume formation rates during arc welding both increase and decrease in a similar manner as welding parameters change. Previously, this fume–spatter relationship has been attributed to evaporation of the spatter caused by oxidation. In this work, a simulated spatter oxidation test did not detect significant fume formation, but high speed ...
Neil T. Jenkins, Thomas W. Eagar
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Reduction of spatter formation by superposition of two laser intensities
ICALEO 2016: 35th International Congress on Applications of Lasers & Electro-Optics, 2016By using laser light as energy source for material processing, high intensities on the work piece surface can be achieved enabling high processing speeds and thus high productivity. In case of laser beam welding this advantage also leads to a small welding seam as well as a small heat affected zone.
Falk Nagel +2 more
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Formation mechanisms of surfaces for osseointegration on titanium using pulsed laser spattering
Applied Surface Science, 2019Abstract Accelerated bone grow (osseointegration) can be achieved by modifying the surface of medical implants. For this purpose, pulsed lasers can be used to successfully texture such beneficial surfaces on titanium, e.g. a BioHelix™ structure. This surface typically includes ridges and droplets with a size range between 1 and 20 μm.
Jan Frostevarg +4 more
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ICALEO 2009: 28th International Congress on Laser Materials Processing, Laser Microprocessing and Nanomanufacturing, 2009
Pores and spatters are a severe issue in high-brightness laser keyhole welding. An improved understanding of the process is necessary to develop means to prevent these effects. A key to understand the spatter behavior and the keyhole formation is to observe the welding process with high speed cameras around the workpiece. Different views
Philipp Gärtner, Rudolf Weber
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Pores and spatters are a severe issue in high-brightness laser keyhole welding. An improved understanding of the process is necessary to develop means to prevent these effects. A key to understand the spatter behavior and the keyhole formation is to observe the welding process with high speed cameras around the workpiece. Different views
Philipp Gärtner, Rudolf Weber
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Spatter and oxide formation in laser powder bed fusion of Inconel 718
Additive Manufacturing, 2018Abstract In laser powder bed fusion (PBF-LB), material is continuously ejected from the melt pool, commonly called spatter, and is distributed throughout the build chamber. There is a lack of understanding of the nature of this spatter and the effect it may have on the integrity of the final part and the quality of any recycled powder.
A.N.D. Gasper +6 more
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