Impregnation behaviours in composite processing / T. Matsuo in INTERNATIONAL POLYMER PROCESSING, Vol. XVII, N° 1 (03/2002)  

[article]  inINTERNATIONAL POLYMER PROCESSING > Vol. XVII, N° 1 (03/2002) . - p. 76-82 Titre : Impregnation behaviours in composite processing : Theoretical consideration and experiments for thermoplastic composites Type de document : texte imprimé Auteurs : T. Matsuo, Auteur ; T. Yuba, Auteur ; K. Kawabe, Auteur Année de publication : 2002 Article en page(s) : p. 76-82 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 668.9 Polymères Résumé : In the first part of this paper, impregnation was positioned in terms of consolidation in composite processing and theoretical model for impregnation behaviours was presented. Impregnation behaviors were classified using the parameters contained in the model. Calculation for some simple cases was conducted. In the second part, impregnation behaviors of two material groups were experimentally estimated by on-line measurement of tool gap displacement during compression molding for making UD composites. First material group is composed of 4 kinds of thermoplastics composite materials. The other is thermoplastic film stacking with opened and unopened reinforcing fiber tows. Microscopic observation on the cross-section of parts fabricated at various molding time and measurement of transverse bending strength of these parts were also conducted. Based on the theoretical model proposed in the first part and these experimental data, impregnation behaviors of these materials were systematically discussed. The results suggest basic technological ways for attaining good impregnation in thermoplastic composites. Note de contenu : - THEORETICAL CONSIDERATION : Position and phenomena of impregnation at consolidation in thermoplastic composite processing - Theoretical model - Classification of impregnation systems in terms of the theoretical model - Calculation for a simple system - EXPERIMENT ON THERMOPLASTICS COMPOSITES : Experimental work - Materials - Methods of sample setting and molding - Measurements and observation - Experimental results and discussion - Impregnation behaviors of TPC materials in the first group - The effect of tow openings on impregnation behavior - Discussion on experimental results in terms of the theoretical consideration - Technological ways for efficiently attaining good impregnation in TPCs DOI : 10.3139/217.1668 En ligne : https://drive.google.com/file/d/1XybuTvxKvv8A4x3FZrcRjau9KuhojHew/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=15989 [article]

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New carbon fiber tow-spread technology and applications to advanced composite materials / K. Kawabe in SAMPE JOURNAL, Vol. 45, N° 2 (03-04/2009)  

[article]  inSAMPE JOURNAL > Vol. 45, N° 2 (03-04/2009) . - p. 6-17 Titre : New carbon fiber tow-spread technology and applications to advanced composite materials Type de document : texte imprimé Auteurs : K. Kawabe, Auteur ; H. Sasayama, Auteur ; S. Tomoda, Auteur Année de publication : 2009 Article en page(s) : p. 6-17 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Composites à fibres de carbone Composites à fibres de carbone -- Propriétés mécaniques Contraintes (mécanique) Enduction textile Essais dynamiques Matériaux -- Fatigue Matériaux -- Imprégnation Stratifiés Tissage Tissés Traction (mécanique) Index. décimale : 677.4 Textiles artificiels Résumé : The new tow spreading technology (FUKUI method) to obtain the continuously wide and thin reinforced fiber tow was developed. By the use of this method, thin prepreg sheet less than 0.05 mm in thickness can be produced at the processing speed of 10 m/min or higher. And also, we developed the weaving process of the spread fiber tow, and it succeeded in manufacturing the woven fabric of 80 g/m2 or less in fiber weight with spread fiber tow from 12K carbon fiber. Then, the various mechanical tests were conducted on the quasi-isotropic laminated composites consist of the thin prepreg sheet with spreading technology. As a result, the dramatic differences in the mechanical properties (tensile, compression, and fatigue) were clarified. Particularly, the thin layer (Thickness is 0.05 mm or less)laminated composites were superior to the conventional layer (Thickness is approx. 0.13 mm and more) laminated composites. Note de contenu : - NEW FIBER TOW-SPREADING METHOD AND MECHANISM - SPREAD FIBER HEET AND THIN PREPREG SHEET (PNEUMATIC PLURAL TOW-SPREADING TECHNOLOGY) - NEW WEAVE AND WEAVING METHOD USING WIDELY SPREAD TOW : New weaving method - Weaving test method by spreading fiber tows - States of woven fabric. - STATIC MECHANICAL PROPERTIES OF QUASI-ISOTROPIC LAMINATES - TENSILE PROPERTIES : Testing procedure - Experimental results - Compressive properties - DYNAMIC MECHANICAL PROPERTIES OF QUASI-ISOTROPIC LAMINATES : Materials En ligne : https://drive.google.com/file/d/1DRs4mtX6E-VXVet28vfy2L18j0sgUavl/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10741 [article]

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