Publications

Mechanical engineering

Influence of process parameters and head orientation on bead geometry for coaxial wire laser additive manufacturing

Among Directed Energy Deposition (DED) processes for metallic materials, Wire Laser Additive Manufacturing (WLAM), distinguishes itself by the use of a laser beam to melt a metallic wire and produce beads. Successive depositions of overlapping beads…

Clément Roch, Christophe Tournier, Sylvain Lavernhe

Material Forming - ESAFORM - 2023

Mechanical engineering

Influence of head orientation on bead geometry and penetration in wire laser additive manufacturing with coaxial technology

Wire laser additive manufacturing (WLAM) distinguishes itself from other wire based processes by its stability and repeatability of deposited geometry, even at high deposition rates, leading to near net shape parts. While the most common…

Clément Roch, Christophe Tournier, Sylvain Lavernhe, Adel Abbas

euspen’s 23rd International Conference & Exhibition - 2023

Mechanical engineering

Approche phénoménologique du contrôle de la géométrie de cordons en WAAM

La fabrication additive par Arc-Fil (WAAM en anglais) permet de fabriquer des pièces par dépôts de cordons de soudure couche par couche. Cette technologie offre des avantages vis-à-vis du fort débit de matière, optimal pour la création de grandes…

Diego Verbist, Nicolas Béraud, Matthieu Museau, Frédéric Vignat, Sylvain Lavernhe

18ème colloque national Smart - 2023

Mechanical engineering

Virtual volume correlation of lattice structures: from volumetric data to geometrical and dimensional defects identification

Additively manufactured lattice structures are widely studied in the literature for their advantageous properties. Manufacturing steps introduce defects that are often classified amongst geometry and dimension, surface quality, and porosity defects…

Marc-Antoine de Pastre, Yann Quinsat

Additive Manufacturing - 2023

Mechanics of materials

Physical geometry model of a weld bead deposit on an inclined or horizontal support applied for directed energy deposition

Chetra Mang, Xavier Lorang, Ramdane Tami, François Rouchon

Mechanics

CONCURRENT SHAPE OPTIMIZATION OF THE PART AND SCANNING PATH FOR POWDER BED FUSION ADDITIVE MANUFACTURING

Mathilde Boissier, Grégoire Allaire, Christophe Tournier

SIAM Journal on Control and Optimization - 2023

Physics

Process Capability Indices With Student Mixture Models Applied to Aircraft Engines GD&T

Abstract Usually, the process capability indices (PCIs) Cp and Cpk are used to quantify the production quality of Geometric Dimensioning & Tolerancing (GD&T). For the most popular PCIs, a strong assumption about normality is required. Many…

Mathieu Croquelois, Cyprien Ferraris, Mohamed Achibi, François Thiebaut

Journal of Manufacturing Science and Engineering - 2022

Automatic Control Engineering

Mathematical Criteria for a Priori Performance Estimation of Activities of Daily Living Recognition

Monitoring Activities of Daily Living (ADL) has become a major occupation to respond to the aging population and prevent frailty. To do this, the scientific community is using Machine Learning (ML) techniques to learn the lifestyle habits of people…

Florentin Delaine, Gregory Faraut

Sensors - 2022

Physics

L-PBF and DED processing of a Ni-based superalloy

Different additive manufacturing (AM) technologies such as L-PBF and DED do become really attractive for both repair and 3D part manufacturing. In particular, extensive work is in progress for the non-weldable nickel-based superalloys which tend to…

M Thomas, Eric Charkaluk, Denis Solas, Fabien Szmytka, Didier Locq, Ariel Morel, Olivier Hubert, Nicolas Muller, Christophe Tournier

World PM2022 Congress & Exhibition - 2022

Solid mechanics

Revisiting the influence of the scanning speed on surface topography and microstructure of IN718 thin walls in directed energy deposition additive manufacturing

Controlling the mechanical properties of metallic parts produced by additive manufacturing remains challenging. The mechanical behavior of parts is mainly related to the microstructure, which depends on process parameters and manufacturing…

Michèle Bréhier, Daniel Weisz-Patrault, Christophe Tournier

6th CIRP Conference on Surface Integrity - 2022