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.
Gordon, S. and Hillery, M.T. (2003). A Review of the Cutting of Composite Materials . Proceedings of the Institution of Mechanical Engineers, Part L, Journal of Materials: Design and Applications, ImechE, 217: 35-45.
2.
Abrão, A.M. , Faria, P.E. , Campos Rubio, J.C. , Reis, P. and Davim, J.P. (2007). Drilling of Fiber Reinforced Plastics: A Review , Journal of Materials Processing Technology, 186: 1-7.
3.
Guu, Y.H. , Hocheng, H. , Tai , N.H. and Liu , S.Y. (2001). Effect of electrical discharge machining on the characteristics of carbon fiber Reinforced Carbon Composites , J. Mater. Sci., 36: 2037-2043.
4.
Davim, J.P. , Campos Rubio, J. and Abrão, A.M. (2007). A Novel Approach Based on Digital Image Analysis to Evaluate the Delamination Factor After Drilling Composite Laminates , Composite Science and Technology, 67: 1939-1945.
5.
Persson, E. , Eriksson, I. and Zackrisson, L. (1997). Effects of Hole Machining Defects on Strength and Fatigue Life of Composite Laminates , Composites Part A , 28(2): 141-151.
6.
Kassapoglou, C. (1999). Minimum Cost and Weight Design of Fuselage Frames Part B: Cost Considerations , Optimization and Results, Composites Part A, 30: 895-904.
7.
Ogawa, K. , Aoyama, E. , Inoue, H. , Hirogaki, T. , Nobe, H. , Kitahara, Y. , Katayama, T. and Gunjima, M. (1997). Investigation on Cutting Mechanism in Small Diameter Drilling for GFRP (thrust force and surface roughness at drilled hole wall) , Composite Structures, 38(1-4): 343-350.
8.
Davim, J.P. and Reis, P. (2003). Drilling Carbon Fiber Reinforced Plastics (CFRP) Manufactured by Autoclave - Experimental and Statistical Study , Materials and Design, 24: 315-324.
9.
Inoue, H. , Aoyama, E. , Hirogaki, T. , Ogawa, K. , Matushita, H. , Kitahara, Y. and Katayama, T. (1997). Influence of Tool Wear on Internal Damage in Small Diameter Drilling in GFRP , Composite Structures, 39(1-2): 55-62.
10.
Tsao, C.C. and Hocheng, H. (2005). Computerized Tomography and C-scan for Measuring Delamination in the Drilling of Composite Materials using Various Drills , International Journal of Machine Tools and Manufacture, 45: 1282-1287.
11.
Kao, W.H. (2005). Tribological Properties and High Speed Drilling Application of MoS2-Cr Coatings , Wear, 258: 812-825.
12.
Fernandes, M. and Cook, C. (2006). Drilling of Carbon Composites using a One Shot Drill Bit. Part I: Five Stage Representation of Drilling and Factors , International Journal of Machine Tools and Manufacture , 46: 70-75.
13.
Lin, S.C. and Chen, I.K. (1996). Drilling Carbon Fiber-Reinforced Composite Material at High Speed , Wear, 194: 156-162.
Hocheng, H. and Tsao, C.C. (2006). Effects of Special Drill Bits on Drilling-induced Delamination of Composite Materials , International Journal of Machine Tools and Manufacture, 46: 1403-1416.
16.
Davim, J.P. and Reis, P. (2003). Study of Delamination in Drilling Carbon Fiber Reinforced Plastics (CFRP) Using Design Experiments , Composite Structure, 59: 481-487.
17.
Daniel, I.M. and Ishai, O. (1994). Engineering Mechanics of Composite Materials, Oxford University Press, New York.
18.
Gao, S.L. and Kim, J.K. (1999). Scanning Acoustic Microscopy as a Tool for Quantitative Characterization of Damage in CFRPs , Composite Science and Technology, 59: 345-354.
19.
Campos Rubio, J. , Abrão, A.M. , Faria , P.E. , Correia, A.E. and Davim, J.P. (2008). Effects of High Speed in the Drilling of Glass Fibre Reinforced Plastic; Evaluation of the Delamination Factor , Journal of Machine Tools and Manufacture , 48: 715-720.
