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Drilling tool geometry evaluation for reinforced composite laminates

2009; Elsevier BV; Volume: 92; Issue: 7 Linguagem: Inglês

10.1016/j.compstruct.2009.10.035

1879-1085

Luís Miguel P. Durão, Daniel J. S. Gonçalves, João Manuel R. S. Tavares, Victor Hugo C. de Albuquerque, Alberto Vieira, António Torres Marques,

Laser Material Processing Techniques

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.