Analysis of Cutting Forces and Surface Roughness in Micro-drilling of CFRP Composite using Response Surface Methodology

Patra, K.1, a; Anand, R. S.2; Steiner, M.3, b; Biermann, S.3, c

Department of Mechanical Engineering, Indian Institute of Technology Patna, Patna-800013, India
Department of Mechanical Engineering, Birla Institute of Technology, Patna campus, Patna-800014, India
Institut für Spanende Fertigung, Technische Universität Dortmund, Baroper Str. 303, 44227 Dortmund

a); b); c)


This article presents the experimental analysis of the effects of cutting speed and feed on cutting force components and surface roughness in micro-drilling of carbon fiber reinforced plastic (CFRP) composite. Micro-drilling experiments are conducted according to full-factorial design using three levels for both speed and feed with three trials at each speed-feed combination. Mathematical models for surface roughness and cutting force components are developed using response surface methodology (RSM). Analysis of variance (ANOVA) is used to check the adequacy of the model. The effects of parameters on cutting forces and surface roughness are discussed through 3-dimensional response graphs. Results show that cutting force components are significantly influenced by feed and speed; on the other hand, effects of both speed and feed are less significant on the surface roughness. Finally, the ranges for optimal cutting conditions are proposed for micro drilling.


Micro-drilling, CFRP, Cutting forces, Surface finish, Response Surface Method, ANOVA


In: 3rd International Conference on Production and Industrial Engineering (CPIE), 29.3.-31.3. 2013, Jalandhar, India, S. 1005-1012