Material shift in wind energy / Philipp Angst in JEC COMPOSITES MAGAZINE, N° 125 (11-12/2018)  

[article]  inJEC COMPOSITES MAGAZINE > N° 125 (11-12/2018) . - p. 46-47 Titre : Material shift in wind energy Type de document : texte imprimé Auteurs : Philipp Angst, Auteur ; Roman Gaetzi, Auteur Année de publication : 2018 Article en page(s) : p. 46-47 Langues : Anglais (eng) Catégories : Chlorure de polyvinyle Construction sandwich Copolymère styrène-acrylonitrile Eoliennes -- Conception et construction Matières plastiques -- Propriétés mécaniques Mousses plastiques Pales d'éoliennes Polyéthylène téréphtalate Index. décimale : 668.4 Plastiques, vinyles Résumé : The dominant design of today's wind rotor blades consists of sandwich structures both in the blade shells and in their shear webs. The core materials in these sandwiches are rigid foam and structural balsa cores. While SAN- and PVC-based foams have been predominantly used as foam cores for blades in the past, today the more recent PET-based foam cores have taken over a leading role that continues to gather momentum. PVC and PU foams are widely used for nacelle covers, and PET foams are also increasingly chosen. Note de contenu : - PET foam core - the rising star - Base polymer and raw material costs favour PET foam cores - PET foams in nacelle production - Total cost of ownership : Design optimization - Process optimization - Fig. 1 : Fatigue resistance of different core materials. The Wöhler curve of PET is much flatter than the steep PVC curves. PET cores can sustain repeated load cycles much longer/at higher load - Fig. 2 : Price evolution of polymer raw materials used for the most important foam cores : PU raw materials (MDI) experienced a steep increase while PET raw material prices remained quite stable - Fig. 3 : Total cost of ownership considerations, factors adding to the material price En ligne : https://drive.google.com/file/d/1gFZpEnHtY8RfLbVVZYK_s0qvbKQAX3Ld/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31739 [article]

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