LISI GROUP - Integrated report 2020

LISI — 2020 INTEGRATED REPORT 35 LISI AUTOMOTIVE / VEHICLE OF THE FUTURE / PROCESS / INVESTMENT OF THE FUTURE A DEMONSTRATOR FOR MULTI-MATERIAL FASTENERS LISI AUTOMOTIVE has received financial support from Bpifrance to develop an industrial demonstrator and promote an innovative approach tomulti-material assembly. The new fastening process combines laser texturing micro-machining with cold supersonic spraying of the Cold Spray type (cold metallization). The result is a robust assembly through additive manufacturing between two different materials ( e.g. steels and aluminum alloys), at the most suitable location, without constraints of shape and geometry. This technique significantly reduces the carbon footprint of the assembly point while optimizing the amount of materials used. LISI AEROSPACE / PROCESS / AUTOMATION EXTENSION OF THE RANGE OF OPTIBLIND™ FASTENERS OPTIBLIND™ robotic blind fasteners constitute an essential technological brick for the future of the assembly of aerospace structures. They facilitate the assembly of the components of primary aircraft structures (wings, sections of fuselages) without having to access the interior of these sub- assemblies, as is the case today. These automated and very competitive fasteners eliminate a number of constraints linked to conventional assemblies in the design of these structures (weight savings, new geometries). LISI AEROSPACE is now extending its range of OPTIBLIND™ fasteners to larger diameters – up to 12.7 mm – in order to address areas where mechanical constraints are even greater. Customer acceptance testing is under way on a wide range of mechanical resistances. The systemshould establish itself in the future as the system par excellence for assembling composite fuselages. High-tech tools Along with these extensions, LISI AEROSPACE’s R&D teams are developing high-tech instrumented tools associated with OPTIBLIND™. Equipped with sensors and an algorithm that make it possible to analyze critical installation parameters in real time, these portable or robotic tools control each stage of the installation of the fasteners in a very precise fashion. This equipment is capable of communicating with the computer systems of assembly plants. It will offer reliable digital solutions for the future plants 4.0 of aerospace contractors. Process LISI AEROSPACE / PROCESS / COMPETITIVENESS IMPROVED STRENGTH OF FORGING TOOLS Forging tools play a key role in the process of material deformation: their quality guarantees the conformity of the parts and their lifespan constitutes an important part of their cost price. Research is currently under way to increase the lifespan of these tools: analyzing the choice of materials, their heat and surface treatment, as well as using simulation to optimize the geometry and developing newmeans of repair. The objective is to double or even triple the lifespan of certain tools depending on the type of application, and thereby to slash costs.