Évolution de l’industrialisation par l’exploitation des données de production dans un contexte industriel

Safran Aircraft Engines is a major global player in the design and manufacture of aircraft engines for civil and military applications. In an increasingly competitive industrial context, control of the geometric quality of parts and of the finished product is still essential. Safran Aircraft Engines has therefore undertaken a research project with two objectives to improve the industrialisation of the product based on production data.The first target is to develop a tolerance optimisation method based on real production data. To answer this first issue, I propose a method of tolerance optimisation based on the Process Capability Indices on a first set of manufactured parts. For this purpose, a robust method of capability computation is proposed. For this first problem, a case study with geometric measurement data from Safran Aircraft Engines is used.The second target is to identify ways to improve the management of geometrical variability during the industrialisation of the product. I propose to use production data to identify the variables influencing the geometric quality of the product. The interest is to relate the geometrical deviations of the parts during the manufacturing and assembly stages with the product requirements. I propose to identify the influential variables with multiple linear regression methods such as ElasticNet. For this, I use a case study, with a set of 13 assemblies designed, manufactured and measured in the laboratory, in order to be representative of Safran Aircraft Engines issues. This case study gives access to all the geometric measurements of the product and the sub-assemblies of the product.