Modeling of void growth mechanisms during the manufacturing of composite laminates - IMT Mines Albi-Carmaux Accéder directement au contenu
Communication Dans Un Congrès Année : 2008

Modeling of void growth mechanisms during the manufacturing of composite laminates

Résumé

Manufacturing composite laminates made of epoxy resin matrix and long carbon fibers is divided into several operations. The most critical one is the cross-linking stage of the thermoset resin. During this phase, uncured prepreg plies’ stacking is transformed into a structural laminate by the achievement of a three dimensional macromolecular resin network. A question of matter is the quality of the polymerization process. If not optimized, it gives birth to defects in the bulk material, such as voids. These defects are considered as possible sources of damage in the composite parts. The aim of this work is to address void growth processes in thermoset composite laminates with dynamic modelling. Diffusion phenomena of gas molecules in resin are neglected for the moment, in order to study more easily viscous effects of the polymer on gas bubbles traped inside the fluid. Once model bases are fixed and validated, an optimization study is proposed to determine the best temperature and pressure cycles which permit to minimize the final void radius.
Fichier principal
Vignette du fichier
Ledru_3562.pdf (482.5 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-01690568 , version 1 (23-01-2018)

Identifiants

  • HAL Id : hal-01690568 , version 1
  • OATAO : 3562

Citer

Yohann Ledru, Robert Piquet, Fabrice Schmidt, Laurent Michel, Gérard Bernhart. Modeling of void growth mechanisms during the manufacturing of composite laminates. 9th International Conference on Flow Processes in Composite Materials - FPCM-9 (2008), Jul 2008, Montréal, Canada. pp.1-9. ⟨hal-01690568⟩
108 Consultations
89 Téléchargements

Partager

Gmail Facebook X LinkedIn More