| Titre : |
Multi-material mix gets a carbon fiber twist : Vision becomes reality for mass production of torsionally-rigid CFRP components |
| Type de document : |
texte imprimé |
| Auteurs : |
Martin Reimers, Auteur ; Felix Dielbold, Auteur ; Anna Pointner |
| Année de publication : |
2018 |
| Article en page(s) : |
p. 12-15 |
| Langues : |
Anglais (eng) |
| Catégories : |
Assemblages multimatériaux
Automobiles -- Carrosseries
Automobiles -- Matériaux
Composites à fibres de carbone
Epoxydes
Matériaux -- Allègement
Moulage par transfert de résine sous vide
|
| Index. décimale : |
668.4 Plastiques, vinyles |
| Résumé : |
Steel, aluminum, magnesium and carbon-fiber-reinforced plastics are combined in the new Audi A8 for a lighter weight, higher performing car body. This multi-material mix solution combines the best structural properties at a lower weight. Contributions from Voith and Dow helped enable mass production of a carbon fiber rear wall. |
| Note de contenu : |
- Enabling CFRP technology
- Component construction
- Manufacturing and assembly considerations
- Collaboration is essential
- Fig 1. Together with their partners Audi developed mass production and assembly of the structural CFRP near wall. It weighs 50 % less than its predecessor and is mounted to the vehicle body with a fast-cure adhesive from Dow
- Fig. 2. View into the Voith production facility at Garching, close to Munich. There, the Audi A8 CFRP near wall structure is processed in a fully automated manufacturing process utilizing the patiented direct fiber placement technology by the Voith roving applicator
- Fig. 3. An isotropic base structure is prepared with a six-layer carbon fiber buildup that is then reinforced up to 19 layers indicated by the red and blue load paths
- Fig. 4. Process benefits of Voraforce 5300 epoxy system. It is well suited for either RTM or wet-compression molding. Ultra-fast curing times coupled with an efficient internal mold release agent, accelerate the mass production (the properties shown are typical but not to be construed as specifications
- Fig. 5. CFRP rear wall in the Ultra-RTM process. View of the lower mold surface, mold with dry preform incorporating the reinforced load paths, cured epoxy injected part prior to demolding |
| En ligne : |
https://drive.google.com/file/d/1-wtVTueZ2cKqZqlUy1dHQ0A-OlIOS5bi/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30245 |
in KUNSTSTOFFE INTERNATIONAL > Vol. 108, N° 3 (03/2018) . - p. 12-15
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