Drilling tool geometry evaluation for reinforced composite laminates

• Author(s): Luís Miguel P. Durão ; Daniel Joaquim Silva Gonçalves ; João Manuel Ribeiro da Silva Tavares ; Victor Hugo C. de Albuquerque ; António Manuel Rincon de Aguiar Vieira ; António Torres Marques
• Date: 2010
• Persistent ID: http://hdl.handle.net/10216/43625
• Origin: Repositório Aberto da Universidade do Porto
• Subject(s): Ciências tecnológicas; Tecnologia; Tecnologia de computadores; Processamento de imagem
• Document Type: Article
• Language: English

Description

In this work, a comparative study on different drill point geometries and feed rate for composite laminates drilling is presented. For this goal, thrust force monitoring during drilling, hole wall roughness measurement and delamination extension assessment after drilling is accomplished. Delamination is evaluated using enhanced radiography combined with a dedicated computational platform that integrates algorithms of image processing and analysis. An experimental procedure was planned and consequences were evaluated. Results show that a cautious combination of the factors involved, like drill tip geometry or feed rate, can promote the reduction of delamination damage.