Frédéric Coste
Arts et Métiers ParisTech
61 Papers
149 Citations
Frédéric Coste is an academic researcher from Arts et Métiers ParisTech. The author has contributed to research in topics: Welding & Laser beam welding. The author has an hindex of 14, co-authored 55 publications. Previous affiliations of Frédéric Coste include Centre national de la recherche scientifique & ParisTech.
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Papers
Experimental analysis of spatter generation and melt-pool behavior during the powder bed laser beam melting process
V Gunenthiram,Patrice Peyre,Matthieu Schneider,Morgan Dal,Frédéric Coste,Imade Koutiri,Rémy Fabbro +6 more
TL;DR: In this paper, an experimental analysis of spatter formation was carried out on an instrumented SLM set-up allowing the quantification of spatiotemporal ejections and possible correlation with melt-pool behavior.
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Experimental study of the dynamical coupling between the induced vapour plume and the melt pool for Nd–Yag CW laser welding
TL;DR: In this paper, the effects of the interaction between the vapour generated by the ablation process occurring on the front keyhole wall (KW) during deep penetration Nd-Yag laser welding and the surrounding metallic melt pool are discussed.
195
Analysis of laser–melt pool–powder bed interaction during the selective laser melting of a stainless steel
TL;DR: In this paper, a laser powder bed fusion (LPBF) or powder-bed additive layer manufacturing process is now recognized as a high-potential manufacturing process for complex metallic parts, however, many technical issues are still to overcome for making LPBF a fully viable manufacturing process.
Study of keyhole behaviour for full penetration Nd?Yag CW laser welding
TL;DR: In this article, the dynamics of the keyhole and its complete geometry (front wall inclination, top and bottom apertures) have been analyzed by using on axis visualizations through the top and the bottom of a keyhole with a 4 kHz high speed video camera.
119
Influence of beam diameter on Laser Powder Bed Fusion (L-PBF) process
M.C. Sow,Thibaut de Terris,Olivier Castelnau,Zehoua Hadjem-Hamouche,Frédéric Coste,Rémy Fabbro,Patrice Peyre +6 more
TL;DR: In this paper, a detailed comparison is presented between a usual 80'μm diameter Gaussian laser spot and a 500'm diameter top-hat laser beam, showing that the use of large beams in the Laser Powder Bed Fusion (L-PBF) process can help increase the production volume.
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