Contribution to the reduction of information loss in the wood industry: use of Nuclear Quadrupole Resonance for the identification of chemical markers and virtualization of the production process for the determination of divergent nomenclatures.

Summary Keeping information in industries with divergent transformation processes has always posed important constraints, and the wood industry is no exception. The existing traceability solutions do not allow to keep this information throughout the life cycle of the wood product. The objective of this thesis is to show the feasibility of two concepts to improve information retention: the communicating material paradigm and the Virtual Manufacturing paradigm. With the first paradigm, it is possible to preserve the information related to the origin of the product thanks to a chemical marking introduced in the whole material that we identify by Nuclear Quadrupole Resonance. In the second paradigm, we anticipate the biometric characteristics of the final products by digitizing the material and virtualizing the transformation operations. Thanks to this, it is possible to determine, despite the imperfection of the data and decisions, the characteristics of the products.