December 14
Arts et Métiers Campus Arts et Métiers Cluny
Research
Bastien TOUBHANSis a doctoral student at LaBoMaP and is defending his thesis on: "The characterization and modeling of distortions in the turning of thin parts made of Inconel 718."
Members of the jury
Rapporteurs
- Ms. Hélène CHANAL, Senior Lecturer, SIGMA Clermont
- Mr. Gilles DESSEIN, University Professor, LGP, ENIT
Examiners
- Mr. Henri PARIS, University Professor, University of Grenoble Alpes
- Mr. Philippe LORONG, University Professor, PIMM, Arts et Métiers
- Mr. Guillaume FROMENTIN, University Professor, LaBoMaP, Arts et Métiers
- Mr. Fabien VIPREY, Associate Professor, LaBoMaP, Arts et Métiers
Guests
- Mr. Habib KARAOUNI, Doctor, SAFRAN TECH
- Mr. Théo DORLIN, Doctor, SAFRAN TECH
Summary
When machining thin parts, distortions can occur during the finishing stages due to several phenomena. Currently, these phenomena are not taken into account when calculating the tool path. As a result, the manufacturing process for certain high-value-added aerospace parts requires a costly iterative approach. This work is being carried out as part of a project aimed at improving simulation approaches to the machining process in order to take these phenomena into account when determining machining trajectories.
The case study involves finish turning on thin Inconel 718 parts using a coated carbide contouring tool. A characterization and modeling of surface integrity and cutting force evolution as a function of tool wear is developed. An experimental methodology demonstrates the significant influence of residual stresses introduced during machining on distortions. Finally, strategies for modeling and compensating for defects related to the elastic deformation of the part during machining under the effect of cutting forces are developed.
Keywords
Turning, Inconel 718, cutting force model, tool wear, distortions, residual stresses.
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