Reduce costs and increase sustainability through the use of low-waste non-crimp fabrics / Konrad Zierold in TECHNICAL TEXTILES, Vol. 65, N° 5 (12/2022)  

[article]  inTECHNICAL TEXTILES > Vol. 65, N° 5 (12/2022) . - p. 274-276 Titre : Reduce costs and increase sustainability through the use of low-waste non-crimp fabrics Type de document : texte imprimé Auteurs : Konrad Zierold, Auteur ; Lars Hahn, Auteur ; Chokri Cherif, Auteur Année de publication : 2022 Article en page(s) : p. 274-276 Note générale : Bibliogr. Langues : Multilingue (mul) Catégories : Caractérisation Composites à fibres Coût -- Contrôle Déchets -- Réduction Durée de vie (Ingénierie) Structure biaxiale Textiles et tissus sans plis Tricot Index. décimale : 677 Textiles Résumé : Is it possible to produce complexly contoured composite components from multiaxial non-crimp fabrics without having to dispose of half of the expensive high-performance fiber material as waste ? A new technology for the production of low-cost biaxial fabrics with little waste was developed at the ITM on the basis of warp-knitting technology for lightweight applications suitable for large series production. For this purpose, an alternating weft yarn system was derived as the preferred variant from several solution approaches developed and successfully implemented on a multiaxial warp knitting machine by means of a retrofittable splicing module. This enables to process the high-performance weft yarns for textile semi-finished products close to the final contour, regardless of the machine width. The amount of waste in the weft direction can be reduced by up to 90%, depending on the fiber component. This makes the production of complexly contoured FRP components more material-efficient and sustainable. Note de contenu : - Starting situation and problem - Technical development and implementation - Material characterization and results - Fig. 1 : Concept illustration for the production of cost-reduced scrims based on alternating weft yarns - Fig. 2 : CAD sectional view of the splice module for inline production of an alternating weft thread - Fig. 3 : Implemented splice module - Fig. 4 : Low-waste, cost-reduced non-crimp fabric : semi-finished product contour after cutting - Fig. 5 : Technology demonstrator using the example of an FKV passenger fender En ligne : https://drive.google.com/file/d/1sa56uyyFVxqsV-N_0ROTKU_WMgJF6GTf/view?usp=share [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38751 [article]

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