Delamination in High Speed Drilling of Carbon Fiber Reinforced Plastic (CFRP)

• Published in: Journal of composite materials 2008-08, Vol.42 (15), p.1523-1532
• Main Authors: Campos Rubio, Juan C., Abrão, Alexandre M., Eustáquio Faria, Paulo, Correia, Antônio Esteves, Davim, João Paulo
• Format: Article
• Language: English
• Subjects: Applied sciences; Composites; Crude oil, natural gas and petroleum products; Drilling bits; Drilling. Casing. Preparing wells for production; Energy; Exact sciences and technology; Forms of application and semi-finished materials; Fracture mechanics (crack, fatigue, damage...); Fuels; Fundamental areas of phenomenology (including applications); Physics; Polymer industry, paints, wood; Prospecting and production of crude oil, natural gas, oil shales and tar sands; Solid mechanics; Structural and continuum mechanics; Technology of polymers
• ISSN: 0021-9983; 1530-793X
• DOI: 10.1177/0021998308092205

When holes are produced on carbon fiber reinforced plastic (CFRP) laminates, in particular for the aerospace and automotive industries, special attention should be focused on as the machining parameters influencing the damage. In this study special drill bits and high-speed cutting (HSC) are used and compared with conventional cutting conditions. The digital image of the damage was conducted in order to analyze the delamination when two composite boards were drilled simultaneously. The experimental results indicated that the use of HSC in drilling is suitable to reduce the damages produced in CFRP with material removal rate increasing considerably.