| Titre : |
Light and well-made by sand : Mass production of complex structural hollow parts |
| Type de document : |
texte imprimé |
| Auteurs : |
Michael Wilhelm, Auteur |
| Année de publication : |
2017 |
| Article en page(s) : |
p. 6-13 |
| Langues : |
Anglais (eng) |
| Catégories : |
Composites à fibres de carbone
Matériaux -- Allègement
Motocyclettes -- Matériaux
Moulage par transfert de résine sous vide
Polyuréthanes
|
| Index. décimale : |
668.4 Plastiques, vinyles |
| Résumé : |
Aerospace and racing without high-performance applications of fiber-composite structural parts have become unimaginable. Integrally manufactured hollow parts achieve top lightweight quality in those fields. Future mass production of complex hollow fiber-composite parts on an industrial scale required that a decisive step had to be taken in order to automate the HP-RTM process. |
| Note de contenu : |
- The cavus production process
- Ideas for a functional and process-ready design
- Part and process simulation
- Sand core production via core shooting
- Preform production with hardly any clippings
- Polyurethane matrix within a short cycle time
- Parameters for the project
- High requirements for moldd technology
- New type of sealing material
- Result: almost two thirds lighter
- Further developments in the R.A.C.E project
- Fig. 1. ln the R.A.C.E. project based on the Cavus technology, a license plate holder was developed for the KTM Superduke 1290R motorcycle as a demonstrator part for mass production
- Fig. 2. Cavus production cycle (clockwise from the left) : The (e.g., additively produced) sand core is braided with carbon fibers and afterwards infiltrated in the mold in the HP-RTM process. Once solidifie & the core is removed using water
- Fig. 3. Design sketches for the license plate holider
- Fig. 4. Simultaneous Engineering Method : even before the final design was finished, 21 specialists from eight partners cooperated in further tasks, such as detail design, calculation, mold development, sealing technology, and process automation
- Fig. 5. Complex simulations : Braiding simulation requires many resources, but it provides early warning of problem zones and defines the path by which the robot guides the core through the radial braider
- Fig. 6. Cavus sand tore by Reinsicht (formerly H2K Minerals)
- Fig. 7. Automated braiding of the core in the radial braider
- Fig. 8. Rheological curves of the Vitrox RTM332 at different snap cure times
- Fig. 9. Constant pressure injectors prevent internai maki pressure fred) from affecting part pressures (green yellow)
- Fig. 10. Intelligent mold filling : Mixed components are injected into the mold until the process is switched off by pressure control
- Fig. 11. Automated removal of the finished part from the mold
- Fig. 12. Hybrid license plate holder made from glass fiber with carbon fiber-reinforcement included by Tailored Fiber Placement
- Fig. 13. Functionalized, hybrid license plate holder with blue-colored matrix and LEDs integrated in the preform |
| En ligne : |
https://drive.google.com/file/d/1jxIlHi5P2-mDWqVpBA1YJYzvT2bzjbHZ/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29532 |
in KUNSTSTOFFE INTERNATIONAL > Vol. 107, N° 11 (11/2017) . - p. 6-13
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Light and well-made by sand in KUNSTSTOFFE INTERNATIONAL, Vol. 107, N° 11 (11/2017)
