| Titre : |
The effect of fiber content and aspect ratio on anisotropic flow front and fiber orientation for injection-molded fiber composites |
| Type de document : |
texte imprimé |
| Auteurs : |
Huan-Chang Tseng, Auteur |
| Année de publication : |
2024 |
| Article en page(s) : |
p. 47-58 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Composites à fibres de verre -- Moulage par injection
Distribution et orientation des fibres
Polyamide 66
Prévision technologique
Simulation par ordinateur
|
| Tags : |
'composites de fibres moulés par injection' 'Orientation des coque-cœur' 'Front d'écoulement anisotrope' 'Effet propriétés fibres' 'Modèle couplé flux-fibre' |
| Index. décimale : |
668.4 Plastiques, vinyles |
| Résumé : |
In state-of-the-art predictive engineering software for injection molded fiber composites, it is challenging to discuss the effect of fiber properties, including fiber content and aspect ratio, on the shell-core fiber orientation and anisotropic flow front. Recently, the flow-fiber coupled model of informed isotropic (IISO) viscosity was proposed for simulating the realistic flow-induced fiber orientation. At present, one attempts to improve the IISO viscosity in relation to fiber content and aspect ratio. Therefore, injection molding simulations of 30 wt% and 50 wt% short glass fiber-reinforced Polyamide66 (30 wt% SGF/PA66 and 50 wt% SGF/PA66) are performed in the IISO flow-fiber couple 3D-FVM (three-dimensional finite volume method) computation under the fixed aspect ratio of a r = 20. As a result, the predicted fiber orientation distributions are in good agreement with related experimental data, while the core width is increased with fiber contents. In addition, the anisotropic ear flow occurs at the higher content. Based on shear viscosity of 30 wt% SGF/PA66, one can directly alter fiber content as 50 wt% SGF/PA66 in the IISO computation to anticipate the reliable trend of fiber orientation and flow behavior. When the a r = 20 short fiber is lengthened as the a r = 50 long fiber, the core obviously becomes the wider. It is significant to investigate the difference between the decoupled and coupled computation, as well as the influence of the flow-fiber coupled and fiber orientation model parameters. |
| Note de contenu : |
- THEORETICAL BACKGROUND : Cross-WLF shear viscosity model - IISO flow-fiber coupled viscosity - iARD-RPR fiber orientation equation
- RESULTS AND DISCUSSION : Used materials and experimental data - Difference between decoupling and coupling flow-fiber computations - Examination of IISO and iARD-RPR parameters - Effect of aspect ratio and fiber content |
| DOI : |
https://doi.org/10.1515/ipp-2023-4386 |
| En ligne : |
https://drive.google.com/file/d/1FHWVafTKnDAQz_Nsyfj-h4kDRz2dWWhV/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40850 |
in INTERNATIONAL POLYMER PROCESSING > Vol. 39, N° 1 (2024) . - p. 47-58
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The effect of fiber content and aspect ratio on anisotropic flow front and fiber orientation for injection-molded fiber composites in INTERNATIONAL POLYMER PROCESSING, Vol. 39, N° 1 (2024)
