The IMPACTS project aims at an ever-increasing integration of modeling, numerics and control design for complex multi-physical implicit systems described by both ordinary and partial differential equations. This integration is achieved considering the novel class of Implicit port Hamiltonian (PH) Systems, analyzing their system properties and developing new dedicated methods for numerical simulation and control design. Implicit PH Systems arise from the modeling of systems with non-local constitutive relations, implicit geometric discretization in time and space or control by interconnection. The methodological contributions of this project will concern the modeling and control of implicit PH systems using irreversible Thermodynamics, geometric numerical methods for space-time discretization and order reduction, canonical implicit discrete-time PH systems and energy-based control design, and in domain/boundary control of distributed parameter systems under implicit interconnections.

The project SHAIR aims to define the drilling of the future, and its place in the technical and social organization of the company. It is particularly positioned in the aeronautics sector. Indeed, on the production and assembly lines, this operation takes an important place since it intervenes on parts with very high added value. Its control is therefore a major economic stake. Added to this issue is the fact that fastener housing holes are prime sites for fatigue crack initiation, therefore quality control (in terms of surface integrity and material integrity) is a really strong requirement. In this context, we wish, through our project, to design the Smart drilling - drilling of the future: first, a pair of digital twins “process” and “machine” will be developed, to predict and guarantee in real-time the quality of drilled holes and to monitor the machine fleet. It will be linked to the "real" process through multi-sensor instrumentation which will provide information in quantity, which will have to be sorted and processed in order to produce relevant indicators (KPIs) to help decision-making. In parallel with these scientific and technical developments, we will study how the deployment of the technology of the future for drilling impacts the social organization of the company via the resulting re-composition of professions. Indeed, we know that these technologies can be badly accepted by the actors of the production, in particular the operators. We will therefore seek to define different integration scenarios for this technology (operator more or less involved and empowered, decision-making at different levels - operator, supervisor, production manager) in order to study the social impact. The objective is then to define overall performance criteria (technico-social) allowing the optimal deployment of technology in the company.

Intestinal epithelium is a single layer of cells exposed to external aggressive conditions, that is renewed every 4–5 days, that makes it one of the most sensitive part of human body. Its tissue homeostasis is highly sensitive to proliferation and cell migration; events occurring in a specific microenvironment: the intestinal crypt. However, mechanical interaction within this niche may be difficult to observe in vivo and mechanical properties of this model are poorly described. Recent developments in cell imaging and culture, with the creation of artificial tissue respecting natural architecture or organoids, have opened new access for the creation of epithelial tissues models that can easily be virtualized. We propose a combination of ‘computational models’, integrating the Finite Element Method Updated and Deep Learning, and organoids humanly designed ‘biological models’, to characterize colon epithelial structures, offering a promising avenue for fully automated diagnosis analysis.

In anticipation of 2050, the total tonnage of concrete, steel, aluminum etc… necessary for the development of green energies will be 2 to 8 times the world production of 2010. How to adapt to this context and fit into as part of greener aerospace research? Part of the answer will be the design of architectural materials and functional structures with specific properties and functions. The impact will then be decisive in terms of minimizing mass or CO2 impact. However, the design of these eco-structures cannot be approached with the existing rules that are applied in the current development of aerostructures. The future Synergy Grant ECODD project intends to revolutionize the process of exploring these aerostructures combining the use of different topological optimization methods (implicit, explicit, multiscale), acceleration methods via substitution models, as well as the link to 3D printing, and flexible structures. The objective of the project is to develop an innovative method of building optimal, eco-designed structures. This transversal and collaborative work covers the field of the optimal design of materials / structures but also of processes via the life cycle analysis and the carbon footprint of the process (including type of transport, place of manufacture, recyclability etc ...) as well as reasoned high performance computing. The project aims, firstly, to design, then to manufacture (print) and test micro-architectural aerostructures and, secondly, to accelerate the design / calculation cycle through artificial intelligence techniques. Finally, the final objective would be to initiate the design / manufacture of multifunctional, multimaterial and programmable deformation aerostructures.