Thrust force and delamination of core-saw drill during drilling of carbon fiber reinforced plastics (CFRP)

Due to the inherent anisotropy and inhomogeneous nature of polymer-based composite materials, their cutting mechanism differs in many respects from conventional metallic materials. Amongst all machining operations, drilling using a twist drill is the most commonly applied method for generating holes for riveting and fastening structural assemblies. Most of the previous research correlates the drill geometry and feed rate to thrust force and delamination on the performance of a twist drill. The Taguchi method has been used to solve many engineering problems. In this investigation, drilling-induced thrust force and delamination by core-saw drill during drilling CFRP laminates were selected as quality character factors to optimize the drilling parameters to obtain the smaller-the-better characteristics. For thrust force and delamination quality character factors, the optimum conditions in drilling were also A1B1C3, (i.e., diameter ratio = 0.55, feed rate = 8 mm/min and spindle speed = 1,200 rpm).

[1]  M. Ramulu,et al.  Drilling of graphite/bismaleimide composite material , 1999 .

[2]  Wuyi Chen,et al.  Assessment of the Exit Defects in Carbon Fibre-Reinforced Plastic Plates Caused by Drilling , 2001 .

[3]  A. Sherif El-Gizawy,et al.  An approach for development of damage-free drilling of carbon fiber reinforced thermosets , 2001 .

[4]  D. C. H. Yang,et al.  Effects of Feedrate and Chisel Edge on Delamination in Composites Drilling , 1993 .

[5]  Jose Mathew,et al.  Investigations into the effect of geometry of a trepanning tool on thrust and torque during drilling of GFRP composites , 1999 .

[6]  R. Komanduri,et al.  Machining fiber-reinforced composites , 1997 .

[7]  John H. Sheesley,et al.  Quality Engineering in Production Systems , 1988 .

[8]  F. Veniali,et al.  Cutting mechanisms in drilling of aramid composites , 1991 .

[9]  Suat Tanaydin.  Robust Design and Analysis for Quality Engineering , 1996 .

[10]  Frédéric Lachaud,et al.  Experimental analysis of drilling damage in thin carbon/epoxy plate using special drills , 2000 .

[11]  M. C. Shaw.  Metal Cutting Principles , 1960 .

[12]  D. C. H. Yang,et al.  Delamination-Free Drilling of Composite Laminates , 1994 .

[13]  W. König,et al.  Machining of Fibre Reinforced Plastics , 1985 .

[14]  J. Paulo Davim,et al.  Experimental study of drilling glass fiber reinforced plastics (GFRP) manufactured by hand lay-up , 2004 .

[15]  J. Paulo Davim,et al.  A study on milling of glass fiber reinforced plastics manufactured by hand-lay up using statistical analysis (ANOVA) , 2004 .

[16]  Hong Hocheng,et al.  Taguchi analysis of delamination associated with various drill bits in drilling of composite material , 2004 .

[17]  H. Hocheng,et al.  Analysis of delamination in drilling composite materials by core-saw drill , 2008 .

[18]  Akira Kobayashi.  Machining of Plastics , 1967 .

[19]  J. Paulo Davim,et al.  Damage and dimensional precision on milling carbon fiber-reinforced plastics using design experiments , 2005 .

[20]  S. M. Wu,et al.  Mathematical Model for Multifacet Drills , 1983 .

[21]  H. Hocheng,et al.  The path towards delamination-free drilling of composite materials , 2005 .