Etats de surface de pièces métalliques obtenues en Fabrication Directe par Projection Laser (FDPL) : compréhension physique et voies d’amélioration

Abstract : The process of direct manufacturing by projection laser ( FDPL), is a process of additive manufacturing which allows to make rooms(parts,plays) of complex shape directly from a file CAD, without tool and without mold(mussel). One of its major inconveniences is the bad quality of the states of surface obtained (Ra upper to 15 µm) which requires systematically stages of remanufacturing. In this context, and within the framework of the project ANR " aspect ", this thesis(theory) has for double objective a better understanding of the origin of the degraded states of surface, and the development of various innovative experimental solutions allowing to improve the states of surface. At first, by considering simple geometries (walls) in alloy of titanium Ti-6Al-4V, we studied the interaction
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Myriam Gharbi. Etats de surface de pièces métalliques obtenues en Fabrication Directe par Projection Laser (FDPL) : compréhension physique et voies d’amélioration. Mécanique des matériaux [physics.class-ph]. Ecole nationale supérieure d'arts et métiers - ENSAM, 2013. Français. ⟨NNT : 2013ENAM0026⟩. ⟨tel-01294641⟩

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