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Communication dans un congrès

Multi-Scale Investigation of the Hygromechanical Behavior of Wood by X-Ray Microtomography and Digital Volume Correlation

Abstract : Swelling/shrinkage behavior of wood induced by relative humidity variations is anisotropic and influenced by its multi-scale and heterogeneous structure. In this study, 3D characterization of the structure and the hygromechanical behavior of earlywood, latewood and growth-ring samples is performed by X-ray microtomography. Samples are subjected to a relative humidity increase (44% to 97% RH) and imaged once they have reached their equilibrium moisture content. Digital volume correlation is used to measure the global and local strains. Earlywood and latewood exhibit different macroscopic hygromechanical behavior. Strains are not similarly distributed in the two types of wood. The local distribution of the strains related to the microstructure and interactions between earlywood and latewood are discussed.
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https://hal-enpc.archives-ouvertes.fr/hal-01711389
Contributeur : Sabine Caré <>
Soumis le : samedi 17 février 2018 - 16:38:15
Dernière modification le : vendredi 17 juillet 2020 - 17:08:46

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Marie Bonnet, Sabine Caré, Michel Bornert, Patrick Aimedieu, Andrew King. Multi-Scale Investigation of the Hygromechanical Behavior of Wood by X-Ray Microtomography and Digital Volume Correlation. Sixth Biot Conference on Poromechanics, 2017, Paris, France. ⟨10.1061/9780784480779.049⟩. ⟨hal-01711389⟩

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