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Abstract(s)
Nos tempos correntes, as fivelas, acessórios colocados nos cintos e/ou nos sapatos da tripulação de bordo, ainda contêm níveis consideráveis de metal, o que provoca uma perturbação do fluxo dos funcionários nas zonas de segurança dos aeroportos. Desta forma, o objetivo deste projeto foi estudar e desenvolver uma fivela em material não metálico, em parceria com a empresa SKYPRO, de forma a colmatar este problema.
Após o estudo inicial das características mecânicas das fivelas metálicas presentes no mercado da aviação, optou‐se por dois materiais de compósitos de fibras curtas para desenvolver a nova fivela “alarm‐free”, pois as suas propriedades assemelham‐se às do material metálico. Análises de Elementos Finitos mostraram que ambos os materiais compósitos permitiam, sem comprometer significativamente as suas características mecânicas, dimensionar a fivela “alarm‐free” de igual forma ao que se pode encontrar no mercado atualmente. Sendo assim, por último, projetaram‐se duas ferramentas, um molde de injeção e um molde de compressão, para permitir o fabrico da fivela “alarm‐free” num contexto industrial, usando os dois materiais compósitos em discussão.
Em conclusão, as fivelas “alarm‐free” produzidas a partir destes dois materiais compósitos poderão tornar‐se uma alternativa viável às atuais fivelas da aviação, permitindo assim menos desconforto por parte do pessoal de cabine nos postos de segurança dos aeroportos.
In current times, buckles, accessories to belts and shoes worn by the boarding crew, still contain significant levels of metal, which causes disturbances at the airport’s security areas. In order to overcome this problem, the objective of this project was to study and develop an alarm‐free buckle using non‐metallic materials, in association with the SKYPRO company. After the initial study of the mechanical properties of metallic buckles usually used in the aviation market, two composite materials of short fiber were chosen to develop the new alarm‐free buckle, since their properties resemble those of the metallic material. A Finite Element Analysis showed that both composite materials allowed, without significantly compromising their physical characteristics, to design the alarm‐free buckle as it is currently in the market. Taking all this information in consideration, two tools, an injection mold and a compression mold were designed to allow the production of the alarm‐free buckle in an industrial context. In conclusion, the "alarm‐free" buckles produced from these two composite materials could become a viable alternative to current aviation buckles, thus allowing less discomfort of the cabin crew at airport security posts.
In current times, buckles, accessories to belts and shoes worn by the boarding crew, still contain significant levels of metal, which causes disturbances at the airport’s security areas. In order to overcome this problem, the objective of this project was to study and develop an alarm‐free buckle using non‐metallic materials, in association with the SKYPRO company. After the initial study of the mechanical properties of metallic buckles usually used in the aviation market, two composite materials of short fiber were chosen to develop the new alarm‐free buckle, since their properties resemble those of the metallic material. A Finite Element Analysis showed that both composite materials allowed, without significantly compromising their physical characteristics, to design the alarm‐free buckle as it is currently in the market. Taking all this information in consideration, two tools, an injection mold and a compression mold were designed to allow the production of the alarm‐free buckle in an industrial context. In conclusion, the "alarm‐free" buckles produced from these two composite materials could become a viable alternative to current aviation buckles, thus allowing less discomfort of the cabin crew at airport security posts.
Description
Keywords
Fivelas Detetores de metais Materiais compósitos Método de Elementos Finitos Moldação por injeção Moldação por compressão a quente Buckles Metal detectors Composite materials Finite Element Analysis Injection mold Compression mold