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Abstract(s)
Atualmente, os materiais compósitos constituem um dos mais grupos interessantes de materiais a serem aplicados em diversos campos, como a industria aeronáutica, a industria automóvel, na medicina, entre outros.
A grande procura deste tipo de material para novos produtos está associada ao baixo peso e a elevada resistência específica tornando os materiais compósitos uma boa escolha para aplicações mais exigentes. A produção de produtos em material compósito já na forma final é uma das grandes vantagens. Contudo, na montagem é necessário recorrer a operações de furação. No processo de furação, em materiais compósitos, é muito comum ocorrer danos que afetam as propriedades mecânicas do material pondo em causa a fiabilidade do produto.
Neste sentido, para a indústria de materiais compósitos existe a necessidade do desenvolvimento de ferramentas de corte com o objetivo de diminuir a zona de dano e aumentar a qualidade do furo.
No trabalho aqui efetuado, apresenta-se um estudo comparativo entre diferentes geometrias de corte e velocidade de avanço que permitirá encontrar a melhor seleção dos parâmetros de furação. Para além disso, também se recorreu a análise da imagem do furo para encontrar uma correlação entre a área de dano e a Fatores de Delaminação.
Actually, composite materials are one of the most interesting groups of materials to be applied in various fields such as aeronautics and automobile industry, medicine and others. The great demand for this type of material for new products is associated with low weight and high specific strength composite materials making a good choice for more demanding applications. The production of composite material products in the final form is a major advantage. However, the assembly is necessary to resort to drilling operations. In the process of drilling, composite materials, it is very common cause damage affecting the mechanical properties of the material calling into question the reliability of the product. Therefore, in the composite materials industry there is a need for the development of cutting tools in order to reduce the damage area and increase the quality of the hole. With this work, we present a comparative study of different cutting geometries and forward speed that will find the best selection of drilling parameters. Furthermore, it also refers to the hole image analysis to find a correlation between the area of damage and delamination factors.
Actually, composite materials are one of the most interesting groups of materials to be applied in various fields such as aeronautics and automobile industry, medicine and others. The great demand for this type of material for new products is associated with low weight and high specific strength composite materials making a good choice for more demanding applications. The production of composite material products in the final form is a major advantage. However, the assembly is necessary to resort to drilling operations. In the process of drilling, composite materials, it is very common cause damage affecting the mechanical properties of the material calling into question the reliability of the product. Therefore, in the composite materials industry there is a need for the development of cutting tools in order to reduce the damage area and increase the quality of the hole. With this work, we present a comparative study of different cutting geometries and forward speed that will find the best selection of drilling parameters. Furthermore, it also refers to the hole image analysis to find a correlation between the area of damage and delamination factors.
Description
Keywords
Furação de compósitos Delaminação Materiais compósitos Ensaios de esmagamento Radiografia Compósitos reforçados com fibras de carbono Composite materials Delamination Mechanical test Bearing test Enhanced radiography Damage assessment Epoxy resin reinforced with carbon fiber