Hygromechanical characterization of glass fiber reinforced polyamide composites behavior

Hygromechanical characterization of glass fiber reinforced polyamide composites behavior

Hassan Obeid Alexandre Clément Sylvain Fréour Frédéric Jacquemin Pascal Casari 

Institut de recherche en génie civil et mécanique (UMR CNRS 6183), Université de Nantes, Centrale Nantes, 58, rue Michel-Ange, BP 420, 44606 Saint-Nazaire, France

Corresponding Author Email: 
hassan.obeid@univ-nantes.fr; alexandre.clement@univ-nantes.fr; sylvain.freour@univ-nantes.fr; frederic.jacquemin@univ-nantes.fr; pascal.casari@univ-nantes.fr
31 December 2017
| Citation



The hygroscopic aging of polymer and polymer composites induces various effects. Among the consequences due to moisture absorption, hygroscopic swelling can become a critical issue in the context of industrial applications. In order to predict the swelling strains experienced by polymer composites during their service life, designers rely on their knowledge of the materials behavior law. The aim of the present work consists in characterizing the hygroscopic strains of polyamide-based composites and the corresponding neat resins. It will be established that, in order to appropriately reproduce the experimental results owing to the numerical simulations, it is necessary to not only develop a multiphysics, multiscale approach accounting the local swelling experienced by the polymer during the transient stage of the moisture diffusion process, as well as the plasticization of the polymer network which also takes place simultaneously.


coupled hygromechanical problem, plasticization, polyamide PA6, moisture diffusion, hygroscopic expansion, multiphysics, multiscale

1. Introduction
2. Campagne expérimentale
3. Modélisation du problème hygromécanique et études numériques
4. Conclusion

Les auteurs remercient l’Agence de l’environnement et de la maîtrise de l’énergie (ADEME) pour le soutien apporté dans le cadre du projet STIICPA dans lequel s’inscrit le présent travail, ainsi que Solvay qui a fourni la matière nécessaire à la réalisation de la campagne expérimentale


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