Microbatteries open the possibility to address very large and diversified markets (real time clock, RFID tags, wireless autonomous sensors, internet security...). This technology has now proven a good level of maturity and its high industrial potential. A marketing and technological Road Map is thus available. In order to be able to reach the objectives, it becomes necessary to have an efficient and high level modelling and simulating tool allowing virtual experimentation. Such a system may allow designers for: - improving final fiability of the components - predicting electrical behaviour and lifetime of the components depending on users solicitations - developing and optimizing new architectures of microbatteries. The STRESSBAT project aims at developing such an multi-physical and multi-materials expert tool based on a ambitious and specifically adapted experimental approach. The Marketing and Technological Road Map put the stress on the fact that the microbattery technology will face two main technological challenges: - resistance and compatibility with standard microelectronic packaging process (that imply temperature and pressure stresses) - realization of components on flexible substrates. The answer to these two challenges will be in the heart of the developments performed during the STRESSBAT project. The scientific challenge addressed in the STRESSBAT project is the understanding of the thermo-mechanical behaviour of multi-materials constituted by the stack of layers necessary to the realization of lithium microbatteries. To success, it is necessary to determine experimentally values of different parameters. These data are currently unknown since the materials used are not conventional and moreover they are elaborated as thin films. Innovative characterization technique will be used to obtain quantitative value with a high degree of confidence. Main expected results of the project are: - a model and expert tool allowing for a 3D and sequential description of thermomechanical and electrochemical aspects in multi-materials - optimized architectures and processes of microbatteries on rigid and flexible substrates - a feasibility analysis of a model integrating high coupling between thermo-mechanical and electrochemical modules. All the results obtained in the frame of the STRESSBAT project will reinforce the position of French actors on the microbattery market. Estimated market business is around 250 M’ in 2016.

Numerical modelling is less frequently used in industry for simulation of welding than for simulation of other transformation procedures, like plastic deformation or melting. This is due to the multiphysical nature of the welding process, involving arc plasma, fluid flow in the melted area, strongly coupled mechanics, thermal effects and metallurgy. This complexity penalizes the setting up of innovative welding process, such as arc-laser hybrid welding. The industrial stake is big in sense of quality and productivity (no reliable predictive tool of the operative and metallurgical weldability exists). The aim of the SISHYFE project is to create this kind of tool, especially for the thick steel welding. Hence, four main aims are defined: 1. To develop methods of direct simulation of welding procedure, by modelling, in particular, laser-plasma interaction in case of hybrid welding, as well as the strong convective fluid flow of the liquid metal in the melted area. This should increase the predictability of these models. 2. In addition to direct simulation, to develop and to customize for hybrid welding (two power sources - arc and laser beam) a methodology consistent in identifying the thermal power sources using an automatic inversed finite elements method. 3. To evaluate the performance of these two methods, and particularly the contribution of the direct simulation, in sense of mechanical and metallurgical predictions (shape of the seam, properties of the melted area and the heat affected area, structure distortions and residual stresses). 4. To develop predictive simulations of the laser-arc hybrid welding procedure, that can also be applied to other procedures, such as arc, laser or electron beam welding. The methodology suggested is: A. Instrumented welding experiments performed for three configurations typical for hybrid welding will serve as reference throughout the project. Emphasis will be put on instrumentation with the aim to obtain a precise and consistent experimental database: thermocouples, high speed video camera, IR camera, distortion and deformation measurements using an image stereo-correlation device, ... B. For a development of numerical models three softwares will be used: COMSOL, SYSWELD and TRANSWELD. A verification of the numerical methods, on one hand, and the performances of each software, on the other hand, will be possible by comparing the obtained numerical results with the experimental results from corresponding reference configurations. C. These new softwares will be used for welding-tests by three industrial users. They would enable determination of experimental windows for operative and metallurgical weldability. The consortium is compact, reliable and well-balanced. It comprises all adequate expertises: 3 industrials, 1 technical center, 2 software companies and 2 research laboratories. All of them are major contributors to each of industrial, technical or scientific problematic. The project can contribute significant innovations in several fields of theme 4 of the request for proposals: - To develop innovative numerical tools for the comprehension of multiphysical phenomena typical for hybrid welding: plasma-laser interaction, fluid-structure coupling (hydrodynamics of melted area/solid part) - To verify the theoretical predictions using a serious experimental approach - To optimize the industrial development of the hybrid welding process

There is a continuous interest in the development of materials that can be multifunctional. The field of lightweight multifunctional composite materials can revolutionise various domains such as energy, automotive, aerospace etc., Development of lightweight multifunctional composite materials is a domain of prime interest and has attracted a huge interest among the researchers. In this context, InnovMMC project consists in framing a network of consortium from 5 different European countries with their multidisciplinary nature ranging from computational modelling, materials fabrication to prototype development. This 9 month-long project will be related to addressing the call to DT-NMBP-01-2018 proposal to Horizon 2020 addressing Open innovation Hubs for lightweight nanoenabled multifunctional composite materials and components. This Innovation action program will be lead by ICMCB-CNRS and will work in cohesion with LaSie-France; I2M-TEFLE, France; M/S Composite Innovation, France; M/S Schneider Electric- France; M/S Tecnalia- Spain; ESI group-Spain; M/S LAN PRINTECH-Spain; M/S JEGAN- Spain; EMPA- Switzerland; M/S Dr. Fritsch Powder Shaping technology- Germany; M/S Cambridge Nanosystem- UK…(to be added after confirmation of participation). InnovMMC shows the multidisciplinary research and applications utilizing the light weight metal alloys. The scientific scope of InnovMMC includes research on developing light weight composites based on Aluminum, Magnesium, Silver and Copper metal alloys reinforced with carbonaceous nano(micro) particles with internal sensors that can store and communicate the obtained data. The technological applications of InnovMMC are polyvalent such as: • Reducing weight and improving thermal control of the electronic components for transport industries • Improved durability of monitoring sensor components • Smart cables and electrical components • Self-diagnostics and self-monitoring materials development With the MRSEI-InnovMMC will help in organizing workshops and visit to the consortium members lab that will assist in two significant aspects such as working towards the proof-of concept and enlargement of the consortium with new international partners. Simultaneously, MRSEI-InnovMMC will help in preparing for the DT-NMBP-01-2018 proposal submission and train the young scholars of the partners lab in the domain of InnovMMC. The collaboration between the InnovMMC consortium members was initiated since many years will further be strengthened by their international co-operation through InnovMMC. The number of industrial partners will also assist in identifying and providing the regulatory, economic and technical barriers. The consortium of InnovMMC in addition to participation in DT-NMBP-01-2018 proposal, will further fortify their ties through other European projects to develop light weight metal composites.