 |
|
|
|
| HAL : hal-00718687, version 1 |
| arXiv : 1207.4100 |
| Fiche détaillée |  Récupérer au format |
|
|
| 11th International Conference Flow Processing in Composite Materials, Auckland : Nouvelle-Zélande (2012) |
|
|
|
|
| THEORETICAL AND EXPERIMENTAL MODELLING OF BUBBLE FORMATION WITH CONNECTED CAPILLARIES IN LIQUID COMPOSITE MOULDING PROCESSES |
|
|
| Yanneck Wielhorski 1Mohamed Amine Ben Abdelwahed 1 |
|
|
| (09/07/2012) |
|
|
|
| The void prediction in LCM processes sparks off interest within the composite material industry because it is a significant issue to keep the expected mechanical properties. The liquid properties, the preform geometry and the flow conditions impact the quantity of void entrapped inside the final product. The complex geometry of the reinforcement due to the arrangement of the bundles and the fibres is a key point to understand and quantify this phenomenon. This paper deals with both simple model networks which can occur inside a fabric representing connected capillaries, so-called "Pore Doublet Model (PDM)". A first is considering two capillaries converging on a node (T-junction) and a second is representing two capillaries interconnected with a supplying principle. These configurations can affect locally the evolution of flow fronts. First, experiments of bubble formed in a T-junction device have been performed and studied. Then a theoretical approach was proposed to forecast microvoid and macrovoid formation, by taking into account a supplying principle and arranged Washburn equation in forced filling. |
|
|
|
|
|
|
|
|
|
|
|
| 1 : | Laboratoire Ondes et Milieux Complexes (LOMC) |
|
|
|
Université du Havre – CNRS : FRE1302 |
|
|
|
|
|
|
|
|
|
| Domaine | : | Sciences de l'ingénieur/Matériaux Sciences de l'ingénieur/Génie des procédés Sciences de l'ingénieur/Mécanique/Mécanique des fluides Physique/Mécanique/Mécanique des fluides |
|
|
| LCM – Void – Imbibition – Pore Doublet Model – Supplying principle – Filling |
|
|
|
| Liste des fichiers attachés à ce document : | |||||
|
|||||
|
|
|
| hal-00718687, version 1 | |
| http://hal.archives-ouvertes.fr/hal-00718687 | |
| oai:hal.archives-ouvertes.fr:hal-00718687 | |
| Contributeur : Mohamed Amine Ben Abdelwahed | |
| Soumis le : Mardi 17 Juillet 2012, 19:10:07 | |
| Dernière modification le : Mardi 17 Juillet 2012, 21:36:15 | |
