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Sandwiches à fibres de lin et anas de lin : optimisation structure-imprégnation-propriétés

Abstract : For different reasons including ecological ones, the weight reduction of structures and valorization of lignocellulosic biomass are considered as possible solutions towards ustainable innovation. In this context, the work of this thesis focuses on the manufacturing and optimization of sandwich structures with skins reinforced with flax fibers with mechanical, economic and environmental goals. A flax plant by-product called flax shives is valued by the development of agglomerated panels. These panels will serve as a core for the sandwich structures. To reach the optimization stage, experimental characterizations of the matrix and core materials are carried out first. Subsequently, joint work between the production processes and the desired properties of sandwich structures is undertaken. All the characteristics determined are compared with those of a non-bio-sourced reference material. Finally, analytical, graphic and numerical approaches are developed in order to answer the main question related to the optimization of the design of flax based sandwich structures with imposed rigidity and resistance to rupture. This optimization procedure should systematically control the desired characteristics of flax sandwiches.
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Submitted on : Friday, September 18, 2020 - 3:01:08 PM
Last modification on : Saturday, September 19, 2020 - 4:26:18 AM

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  • HAL Id : tel-02943012, version 1

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Safa Essid. Sandwiches à fibres de lin et anas de lin : optimisation structure-imprégnation-propriétés. Mécanique des matériaux [physics.class-ph]. Normandie Université, 2020. Français. ⟨NNT : 2020NORMLH05⟩. ⟨tel-02943012⟩

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