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| Registros recuperados: 18 | |
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| Taby, J; Hoyning, B. |
| Knitted multiaxial reinforcement are today more and more commonly used in the production of marine vessels. This is due to superior strength compared to traditional reinforcements such as woven roving and chopped strand mat. Strength properties in different resins are documented, and multiaxial and woven reinforcements are compared. Special attention is paid to interlaminar properties, and it is apparent that no intermediate layers of chopped strand mat are necessary when using multiaxial reinforcement. Methods of analysis are discussed, the influence of fibre orientation on strength and stiffness of structures is described, and a case study reveals considerable weight and cost saving potential. |
| Tipo: Text |
Palavras-chave: Ship technology; Ship design; Composite materials; Matériaux composites; Renforts multiaxiaux; Tissus cousus. |
| Ano: 1992 |
URL: http://archimer.ifremer.fr/doc/1992/acte-1061.pdf |
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| Devaux, H. |
| The mast-rigging combination of a yacht is the structural element which transmits the aerodynamic forces on the sails to the yacht's structure. This load transmission element is in general made up of a mast, a long, thin tube, and the rigging which is a collection of cables linking the mast to the deck. These elements are long, often longer than the hull, with a high centre of gravity and it is essential to obtain as low a mass as possible, both for safety and performance. This search for weight gain imposes the use of lighter and lighter materials: wood, then aluminium alloys and most recently, since the early 1980's, composite materials. The use of the latter is the subject of this paper. |
| Tipo: Text |
Palavras-chave: Composite materials; Deformation; Ship design; Ship technology; Eléments finis; Gréement; Mât; Flambement. |
| Ano: 1992 |
URL: http://archimer.ifremer.fr/doc/1992/acte-1078.pdf |
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| Gellhorn (von), E; Mittelmann, G. |
| Sandwich panels with a facing of laminated fibre reinforced plastics are now established boatbuilding materials. In the last few years they have begun to replace the traditional metal and wood in ship and marine construction. Today's materials are usually selected on the basis of minimum cost and simplicity of construction. This is often contrary to the demands of the owner who wants an inexpensive, safe, easy-care and long-lasting ship. The requirements of boatbuilder and operator can easily be satisfied if the combination of the best choice of materials and new, rationalized construction methods are considered. Taking the construction of the boat "Sandwich" as an example we will demonstrate the increased importance of the tough rigid linear PVC foam core... |
| Tipo: Text |
Palavras-chave: Costs; Ship technology; Ship design; Glass reinforced plastics; Composite materials; Coûts; Production; Sandwich PVC linéaire; Ame. |
| Ano: 1992 |
URL: http://archimer.ifremer.fr/doc/1992/acte-1063.pdf |
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| Simeone, M; Davies, Peter. |
| In the last two decades, the Finite Element Method has been growing as a powerful tool for the structural analysis of the ship hull, but in nautical construction the use of this method has been related mainly to steel or aluminium hulls. In a metallic structure the material is homogeneous and isotropic and the plate, or the stiffened plate, behaves as an orthotropic plate, which means orthogonally anisotropic with three mutually perpendicular planes of symmetry; on the contrary, when considering a composite hull panel the scheme ought to be different, because there arise two different problems, which ensue from the structural characteristics of the composite sandwich panel. Firstly, the Element Stiffness Matrix must take into account the natural anisotropy... |
| Tipo: Text |
Palavras-chave: Ship technology; Ship design; Ship hulls; Composite materials; Coque en composite; Sandwich; Eléments finis. |
| Ano: 1992 |
URL: http://archimer.ifremer.fr/doc/1992/acte-1072.pdf |
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| Lelan, J; Parneix, P; Gueguen, P. |
| Composite materials offer many advantages for the construction of metal hull ships' superstructures (lower weight, higher resistance to fire compared to aluminium alloy, integration of specific functions to the material ...). DCN Lorient has the most of these characteristics to build the "La Fayette" class frigate superstructures. This paper discusses the developments that were undertaken for the choice and validation of the technical solutions retained and particularly the connection to a metal hull. The difficulties to be resolved during the manufacturing and assembly of the superstructures on board the prototype are also discussed. This concept can be applied to other types of ships with metal hulls, by adapting the technological choices to the design... |
| Tipo: Text |
Palavras-chave: Joints; Ship design; Ships; Ship technology; Composite materials; Assemblage acier/composite; Composite; Navire; Superstructure. |
| Ano: 1992 |
URL: http://archimer.ifremer.fr/doc/1992/acte-1067.pdf |
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| Filippi, R. |
| A recent product, now five years old, Nidaplast is an extruded polypropylene honeycomb, coated on both faces by a non-woven polyester. Its widespread uses extend from public buildings including water treatment plants through to the composites industry. To all these cases the honeycomb structure brings its well-known physical and mechanical properties of lightness and strength. In addition, the flexible coating on the faces allows easy fabrication which is not the case for normal honeycombs. The polypropylene offers chemical inertness and non-toxicity. |
| Tipo: Text |
Palavras-chave: Ship technology; Ship design; Composite materials; Polypropylène; Ame; Sandwich; Nid d'abeille. |
| Ano: 1992 |
URL: http://archimer.ifremer.fr/doc/1992/acte-1070.pdf |
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| Registros recuperados: 18 | |
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