A study on the mechanical property and 3D fiber distribution in injection molded glass fiber reinforced PA66 / J. B. Ryu in INTERNATIONAL POLYMER PROCESSING, Vol. XXIX, N° 3 (07/2014)  

[article]  inINTERNATIONAL POLYMER PROCESSING > Vol. XXIX, N° 3 (07/2014) . - p. 389-401 Titre : A study on the mechanical property and 3D fiber distribution in injection molded glass fiber reinforced PA66 Type de document : texte imprimé Auteurs : J. B. Ryu, Auteur ; M.-Y. Lyu, Auteur Année de publication : 2014 Article en page(s) : p. 389-401 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Composites à fibres de verre -- Moulage par injection Composites à fibres de verre -- Propriétés mécaniques Distribution et orientation des fibres Polyamide 66 Index. décimale : 668.4 Plastiques, vinyles Résumé : Polyamide66 (PA66) is being widely used for automobile part and other applications. In many cases, PA66 is reinforced with glass fiber to enhance its mechanical properties. In this study, the mechanical properties and glass fiber distributions in injection molded part have been investigated for glass fiber reinforced PA66. Two shapes of glass fibers, circular and flat, were used for the glass fiber reinforced PA66. X-ray microtomography (micro-CT) was used to observe the glass fiber distributions in the PA66 composites. Micro-CT photos were taken in three directions to observe the three-dimensional glass fiber distributions in the injection molded specimens. Investigation of the mechanical properties in relation to the glass fiber orientation revealed that the orientation of the fibers enhanced the mechanical properties. Glass fibers with smaller diameters resulted in better mechanical properties. Circular glass fiber reinforced PA66 exhibited better mechanical properties than flat glass fiber reinforced PA66. The skin layer showed that the glass fibers strongly orientated to the flow direction while glass fibers in the core layer orientated perpendicular to the flow direction because of fountain flows. Glass fibers in the core layer also oriented to the width direction of the flow. Consequently, glass fibers in this core region oriented three dimensionally. Full three-dimensional model of glass fiber orientation was proposed in this paper. Note de contenu : - EXPERIMENTAL : Materials - Specimens and tensile test - Observation of glass fiber distribution - RESULTS AND DISCUSSION : Comparison of tensile properties of ASTM specimen and cut specimen - Tensile property and glass fiber distributions for glass fiber content - Tensile property for glass fiber orientation angle - Tensile property and glass fiber distributions for glass fiber diameter - Tensile property and glass fiber distribution for glass fiber shape DOI : 10.3139/217.2844 En ligne : https://drive.google.com/file/d/1kKm0N_HO0o71o7Hxzb21bHd60BxAsJJ9/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=21737 [article]

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