[article]
| Titre : |
Setting sail with structural adhesives : The ETS Rafale II student team built a carbon epoxy C-Class hydrofoil catamaran using Scott Bader structural adhesives |
| Type de document : |
texte imprimé |
| Année de publication : |
2018 |
| Article en page(s) : |
p. 31-35 |
| Langues : |
Américain (ame) |
| Catégories : |
Adhésifs structuraux
Bateaux -- Conception et construction
Bateaux -- Matériaux
Composites à fibres de carbone
|
| Index. décimale : |
668.3 Adhésifs et produits semblables |
| Résumé : |
A team of graduate engineering students from the École de Technologie Supérieure (ÉTS) in Montréal, Canada, recently finished building Rafale II, an all-composite C-Class racing hydrofoil catamaran. It features redesigned carbon fiber epoxy prepreg hulls and cross beams, which are stiffer and 25% lighter while providing 15% more displacement volume. The speed and handling of the catamaran has also been improved by designing lighter, stronger and better-performing pairs of new epoxy carbon fiber L-foil dagger boards and T-section rudder hydrofoils, which provide a higher lift/drag ratio and greater stability when hydrofoiling.
The first ETS Rafale project started in early 2014 with a relatively small budget of CDN$130,000 (~ $99,000). However, the students received considerable support and technical advice from over 40 project sponsors, including Scott Bader North America (then Scott Bader ATC), which sponsored both Rafale I and II and provided composite resin, tooling, and structural adhesive products, as well as technical support.
This second ETS team is building on the experiences of the Rafale I team. They have been at the forefront of composite technology and design, having influenced both the creation of the World Speed Sailing Committee and modern racing yacht designs, including the America’s Cup class AC72, AC45 (wingsail design) and AC50 racing catamarans. |
| Note de contenu : |
- A vinyl ester resin was used in the heated molds for the new hull sections to cover the wire elements prior to the second mold tool infusion
- To minimize weight, Rafale II was redesigned using FEA and CAD technology based around a carbon fiber epoxy prepreg system and assembled using a structural adhesive
- Using a urethane acrylate-based structural adhesive** in the corners of the hull mold not only avoided stress concentration points and prevented any dry areas or air inclusions in the finished parts, but also made the tool far less prone to corner damage during part demolding
- The new carbon fiber epoxy prepreg hull half sections for Rafale II were molded by low-pressure vacuum bagging out of autoclave using heated tooling
- To minimize weight, the two halves of the hull were bonded together using a structural adhesive (no fastenings required)
- Both the boat and the two-man team of Maxime Loiselle at the helm and Olivier Leduc as crew performed extremely well in Miami during the U.S. Foiling Week |
| En ligne : |
https://www.adhesivesmag.com/articles/96458-setting-sail-with-structural-adhesiv [...] |
| Format de la ressource électronique : |
Texte |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32007 |
in ADHESIVES & SEALANTS INDUSTRY (ASI) > Vol. 25, N° 9 (09/2018) . - p. 31-35
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Setting sail with structural adhesives in ADHESIVES & SEALANTS INDUSTRY (ASI), Vol. 25, N° 9 (09/2018)
