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Étude expérimentale et numérique de l'évolution de température au cours de la fabrication additive par fusion laser sur lit de poudre (L-PBF)

Haine, Alexandre
(2024)

Files

Haine_05921900_2024.pdf
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  • Adobe PDF
  • 9.63 MB

Details

Supervisors
Simar, Aude ; Delannay, Laurent
Faculty
Ecole polytechnique de Louvain
Degree label
Master [120] : ingénieur civil mécanicien, à finalité spécialisée
Abstract
enThe additive manufacturing process using laser fusion on a powder bed (L-PBF) currently faces major challenges in the manufacture of parts with homogeneous material properties. This thesis contributes to a better understanding of the thermal origin of inhomogeneities in these parts. To this end, it focuses on the study of heat transfers occurring in parts manufactured by L-PBF during their construction. This thesis begins with an experimental analysis of the evolution of thermal loading in simple parts manufactured by L-PBF through the evolution of their porosity and their thickness. Then, the majority of this work is devoted to the development of numerical models simulating the heat transfers involved in an L-PBF process. The aim of these models is to predict the evolution of the temperature field in parts printed by L-PBF in order to adapt the manufacturing parameters to produce homogeneous parts.