Chemo-mechanics couplings in polymer matrix materials exposed to thermo-oxidative environments

Marco Gigliotti; Jean-Claude Grandidier

doi:10.1016/j.crme.2010.02.008

Chemo-mechanics couplings in polymer matrix materials exposed to thermo-oxidative environments

Marco Gigliotti ¹ ; Jean-Claude Grandidier ¹

¹ Institut Pprime, CNRS – ENSMA – Universitè de Poitiers, Département Physique et Mécanique des Matériaux, ENSMA Téleport 2 – 1, Avenue Clement Ader, BP 40109 – F86961 Futuroscope Chasseneuil Cedex, France

Comptes Rendus. Mécanique, Volume 338 (2010) no. 3, pp. 164-175.

Abstract
Résumé

The present article focuses on the modelling of chemo-mechanics couplings in polymer matrix materials exposed to thermo-oxidative environments at high temperatures (150 °C). The coupling between oxygen reaction–diffusion and mechanics is put in evidence theoretically through the employment of a unified approach, based on the thermodynamics of irreversible processes; it is found that oxygen reaction–diffusion in the polymer matrix can be influenced by the strain tensor, in particular by its trace and by its spatial gradients.

Le présent article s'intéresse à la modélisation des couplages entre l'oxydation et la mécanique dans les résines de type époxy soumises à un environnement dit « haute température » (150 °C). Le couplage entre le schéma mécanistique de réaction diffusion de l'oxygène et la mécanique est abordé théoriquement en utilisant une approche classique de la thermodynamique des processus irréversibles. Il est montré que le phénomène de diffusion–réaction peut être influencé par le tenseur des déformations mais aussi par le gradient spatial de la trace des déformations.

Received: 2009-12-02
Accepted: 2010-02-19
Published online: 2010-03-01

DOI: 10.1016/j.crme.2010.02.008

Keywords: Continuum mechanics, Thermo-oxidation, Diffusion–mechanics couplings, Thermodynamics of irreversible processes
Mots-clés : Milieux continus, Thermo oxydation, Couplage diffusion mécanique, Thermodynamique des processus irréversibles

Author's affiliations:

Marco Gigliotti ¹; Jean-Claude Grandidier ¹

¹ Institut Pprime, CNRS – ENSMA – Universitè de Poitiers, Département Physique et Mécanique des Matériaux, ENSMA Téleport 2 – 1, Avenue Clement Ader, BP 40109 – F86961 Futuroscope Chasseneuil Cedex, France

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     author = {Marco Gigliotti and Jean-Claude Grandidier},
     title = {Chemo-mechanics couplings in polymer matrix materials exposed to thermo-oxidative environments},
     journal = {Comptes Rendus. M\'ecanique},
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     year = {2010},
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     language = {en},
}

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Marco Gigliotti; Jean-Claude Grandidier. Chemo-mechanics couplings in polymer matrix materials exposed to thermo-oxidative environments. Comptes Rendus. Mécanique, Volume 338 (2010) no. 3, pp. 164-175. doi : 10.1016/j.crme.2010.02.008. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2010.02.008/

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