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| Registros recuperados: 44 | |
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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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| 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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| Lesbre, F; Potet, P; Artiga, F. |
| Composite materials used in naval construction use mainly glass fibres and fabrics and epoxy resins for monolithic structures and syntactic foams or balsa wood for the core of sandwich structures. Traditional non destructive testing (NDT) methods such as ultrasonics or radiography do not always ensure a complete check of the structure, principally due to the strong heterogeneity of these materials. In order to improve this situation the DCN has developed a test method based on the use of active infrared thermography. The technique consists of illuminating the structure with a powerful lamp and observing the cooling of the surface with an infrared camera. Defects present act as obstacles to heat transmission in the material and cause thermal anomalies on... |
| Tipo: Text |
Palavras-chave: Epoxy resins; Fibre glass; Ship technology; Composite materials; Sous marin; NDT; Infrarouge; Thermographie. |
| Ano: 1992 |
URL: http://archimer.ifremer.fr/doc/1992/acte-1050.pdf |
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| Registros recuperados: 44 | |
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