Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 7
Primeira ... 1 ... Última
Imagem não selecionada

Imprime registro no formato completo
Essai de caractérisation sous pression de panneaux en composites pour structures marines ArchiMer
Reichard, R.
Traditional testing of FRP sandwich panels using uniaxial loading provides useful data for structural designers, but these tests do not work well for multiaxially reinforced laminates or for sandwich laminates. Sandwich laminates are generally used to increase the flexural properties of a panel. Flexural testing of sandwich beams does not address panel membrane effects, which can be significant. As a result, a number of different methods have been developed for testing panels. Experiments with multiaxial FRP sandwich panels have been conducted to evaluate the behavior of panel laminates with various fiber orientations and core materials under both static pressure loading and hydrodynamic shock loading. The test apparatus and methods are described, and the...
Tipo: Text Palavras-chave: Test equipment; Loads (forces); Pressure effects; Pressure; Materials testing; Ship technology; Composite materials; Panneau composite; Pression répartie; Choc; Sandwich; Essais.
Ano: 1992 URL: http://archimer.ifremer.fr/doc/1992/acte-1086.pdf
Imagem não selecionada

Imprime registro no formato completo
La conception de structures navales en sandwich: Un probleme inverse ArchiMer
Holm, D; Esping, B; Romell, O; Campion, F.
An integrated approach is introduced for the solution of the inverse problem: which are the lamina orientation, laminate constitution, core quality and thickness combination ensuring specified objective(s) to be reached? The optimal solution is obtained using mathematically stringent optimization methods (the Method of Moving Asymptotes, MMA) coupled with finite element analysis, interactive graphic pre- and post-processing and parametric modelling, as implemented in OASIS-ALADDIN. This approach has been applied to the optimal design of the hull structure of a Surface Effect Ship made of GRP-sandwich. The objective was to minimize the weight of the ship by determining the optimum skin and core thicknesses of structural members of the hull as well as web...
Tipo: Text Palavras-chave: Finite element method; Glass reinforced plastics; Ship hulls; Safety devices; Ship technology; Ship design; Composite materials; Sandwich; Composite; Problème inverse; Sensibilité; Optimisation.
Ano: 1992 URL: http://archimer.ifremer.fr/doc/1992/acte-1054.pdf
Imagem não selecionada

Imprime registro no formato completo
La conception structurale preliminaire de navires en ames sandwich ArchiMer
Previte, C.
Fiberglass laminate design is of deep concern to marine designers and engineers. This presentation summarizes the topic of core selection for marine structures. It provides a schematic approach to de-complicating laminate design, reviews the attributes of different types of Polimex cores and outlines the principal causes of sandwich failure. For sake of brevity engineering analysis and formulas have been greatly abbreviated.
Tipo: Text Palavras-chave: Deterioration; Failures; Composite materials; Ship design; Ship technology; Fibre glass; Rupture; Conception; PVC; Sandwich.
Ano: 1992 URL: http://archimer.ifremer.fr/doc/1992/acte-1059.pdf
Imagem não selecionada

Imprime registro no formato completo
L'analyse structurale par methode d'elements finis d'une coque en composite ArchiMer
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
Imagem não selecionada

Imprime registro no formato completo
Le comportement en fluage, en fatigue et la tenue au feu de composites sandwichs ArchiMer
Chevalier, J.
Baltek Corp. is currently in the process of introducing 3 new products: density select material, AL-600/10 and DecoLite panels, that reduce weight and cost. Creep results on typical core materials have shown that only end-grain balsa (EGB) and 9.0 lb. Nomex honeycomb were capable of continuous operation at 160 F (71 degree C). In reverse bending fatigue studies, EGB has a fatigue limit 2-2.4 times that of the PVC foams. Finally, while EGB by itself is a ASTM E-84 Class 2 material, with the proper skins and resin system, it can easily meet Class 1 requirements.
Tipo: Text Palavras-chave: Fatigue (materials); Creep; Fire; Ship technology; Ship design; Composite materials; Feu; Nid d'abeille; PVC; Ame balsa; Sandwich; Composite.
Ano: 1992 URL: http://archimer.ifremer.fr/doc/1992/acte-1065.pdf
Imagem não selecionada

Imprime registro no formato completo
Materiaux composites courants: Tenue au feu ArchiMer
Croquette, Jean; Baudin, M.
In the national naval composites project, several series of fire tests have been carried out on epoxy glass pipes and different structural materials commonly used in naval construction. This paper describes the materials tested and the procedures chosen to evaluate the fire reaction properties: flammability (M classification), smoke emission (F classification), and the fire resistance (IMO A 517(13)). The conclusions are given for both the testing procedures and the performance of the composite materials.
Tipo: Text Palavras-chave: Pipes; Fire; Tests; Materials testing; Ship technology; Composite materials; Tuyauteries; Sandwich; Tenue au feu; Matériau composite.
Ano: 1992 URL: http://archimer.ifremer.fr/doc/1992/acte-1047.pdf
Imagem não selecionada

Imprime registro no formato completo
Un nid d'abeille utilisable dans les bateaux a grande diffusion ArchiMer
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
Registros recuperados: 7
Primeira ... 1 ... Última
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional