Tool effects on hybrid laminates drilling

• Autor(a) principal: Durão, Luís M.
• Data de Publicação: 2010
• Outros Autores: Tavares, João Manuel R. S., Albuquerque, Victor Hugo C. de, Marques, A. T., Magalhães, A. G., Vieira, A. Aguiar
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Texto Completo: http://hdl.handle.net/10400.22/4174
• topic: Carbon fiber; Damage; Delamination; Drill geometry; Glass fiber; Image processing and analysis; Linear-elastic fracture mechanics; Thrust force

Fiber reinforced plastics are increasing their importance as one of the most interesting groups of material on account of their low weight, high strength, and stiffness. To obtain good quality holes, it is important to identify the type of material, ply stacking sequence, and fiber orientation. In this article, the drilling of quasi-isotropic hybrid carbon +glass/epoxy plates is analyzed. Two commercial drills and a special step drill are compared considering the thrust force and delamination extension. Results suggest that the proposed step drill can be a suitable option in laminate drilling.