CFRP Drilling Experiments: Investigation on Defect Behaviors and Material Interface Detection for Minimizing Delamination

탄소섬유복합재 가공의 결함특성 및 결함 저감을 위한 경계검출

Kim, Gyuho;Ha, Tae In;Lee, Chan-Young;Ahn, Jae Hoon;Kim, Joo-Yeong;Min, Byung-Kwon;Kim, Tae-Gon;Lee, Seok-Woo

  • Received : 2016.05.09
  • Accepted : 2016.05.29
  • Published : 2016.06.03


CFRP (Carbon Fiber Reinforced Plastic) and CFRP-metal stacks have recently been widely used in the aerospace and automobile industries. When CFRP is machined by a brittle fracture mechanism, defect generation behaviors are different from those associated with metal cutting. The machining quality is strongly dependent on the properties of CFRP materials. Therefore, process control for CFRP machining is necessary to minimize the defects of differently manufactured CFRPs. In this study, defects in drilling of CFRP substrates with a variety of fiber directions and resin types are compared with respect to thrust force. An experimental study on material interface detection is carried out to investigate its benefits in process control.


CFRP machining;CFRP-Metal stack;Machining condition monitoring


  1. Li, H., Qin, X., He, G., Jin, Y., Sun, D., et al., "Investigation of Chip Formation and Fracture Toughness in Orthogonal Cutting of UD-CFRP," The International Journal of Advanced Manufacturing Technology, Vol. 82, No. 5-8, pp. 1079-1088, 2016.
  2. Davim, J. P. and Reis, P., "Study of Delamination in Drilling Carbon Fiber Reinforced Plastics (CFRP) using Design Experiments," Composite Structures, Vol. 59, No. 4, pp. 481-487, 2003.
  3. Sheikh-Ahmad, J. Y., "Machining of Polymer Composites," Springer, pp. 208-210, 2009.
  4. Liu, D., Tang, Y., and Cong, W. L., "A Review of Mechanical Drilling for Composite Laminates," Composite Structures, Vol. 94, No. 4, pp. 1265-1279, 2012.
  5. DiPaolo, G., Kapoor, S. G., and DeVor, R. E., "An Experimental Investigation of the Crack Growth Phenomenon for Drilling of Fiber-Reinforced Composite Materials," Journal of Engineering for Industry, Vol. 118, No. 1, pp. 104-110, 1996.
  6. Hocheng, H. and Tsao, C. C., "The Path towards Delamination-Free Drilling of Composite Materials," Journal of Materials Processing Technology, Vol. 167, No. 2, pp. 251-264, 2005.
  7. Iliescu, D., Gehin, D., Gutierrez, M. E., and Girot, F., "Modeling and Tool Wear in Drilling of CFRP," International Journal of Machine Tools and Manufacture, Vol. 50, No. 2, pp. 204-213, 2010.
  8. Neugebauer, R., Ben-Hanan, U., Ihlenfeldt, S., Wabner, M., and Stoll, A., "Acoustic Emission as a Tool for Identifying Drill Position in Fiber-Reinforced Plastic and Aluminum Stacks," International Journal of Machine Tools and Manufacture, Vol. 57, pp. 20-26, 2012.

Cited by

  1. A review on research progress of machining technologies of carbon fiber-reinforced polymer and aramid fiber-reinforced polymer pp.2041-2983, 2019,


Grant : 탄소섬유복합재(CFRP) 가공시스템 개발

Supported by : 산업통상자원부