Experimental and numerical analysis of step drill bit performance when drilling woven CFRPs

Abstract This paper focuses on the influence of the step drill bit geometry on the damage induced during drilling Carbon Fiber Reinforced Polymer materials (CFRPs). Step geometry designed with the aim of avoiding composite damage in CFRPs drilling, is compared to conventional twist configuration. Despite the reduction of thrust force and torque observed when using the step drill, the delamination was only reduced at low feed rates. A numerical model developed for the step geometry was validated with experimental data demonstrating its ability to predict thrust force and delamination for different values of feed rate and cutting speed. Numerical model allowed the development of a parametrical study. Finally, using a response surface methodology a mechanistic model and surface diagrams have been presented in order to help in the selection of optimum variables minimizing drilling induced damage.

[1]  María Henar Miguélez,et al.  Numerical analysis of the influence of tool wear and special cutting geometry when drilling woven CFRPs , 2016 .

[2]  David K. Aspinwall,et al.  Drill geometry and operating effects when cutting small diameter holes in CFRP , 2009 .

[3]  A. Lamikiz,et al.  Design and Test of a Multitooth Tool for CFRP Milling , 2009 .

[4]  Yung C. Shin,et al.  Modeling of machining of composite materials: A review , 2012 .

[5]  Redouane Zitoune,et al.  Machinability and surface quality during high speed trimming of multi directional CFRP , 2013 .

[6]  F. Chang,et al.  A Progressive Damage Model for Laminated Composites Containing Stress Concentrations , 1987 .

[7]  A. Lamikiz,et al.  HOLE MAKING USING BALL HELICAL MILLING ON TITANIUM ALLOYS , 2012 .

[8]  Vadim V. Silberschmidt,et al.  Drilling in carbon/epoxy composites: Experimental investigations and finite element implementation , 2013 .

[9]  Hong Hocheng,et al.  Comprehensive analysis of delamination in drilling of composite materials with various drill bits , 2003 .

[10]  Ozden Isbilir,et al.  Numerical investigation of the effects of drill geometry on drilling induced delamination of carbon fiber reinforced composites , 2013 .

[11]  A. Abrão,et al.  Analysis of parametric influence on delamination in high-speed drilling of carbon fiber reinforced plastic composites , 2008 .

[12]  J. López-Puente,et al.  Numerical prediction of delamination in CFRP drilling , 2014 .

[13]  T. Bernthaler,et al.  A comparative study on tool wear and laminate damage in drilling of carbon-fiber reinforced polymers (CFRP) , 2016 .

[14]  Hong Hocheng,et al.  Effects of special drill bits on drilling-induced delamination of composite materials , 2006 .

[15]  Christopher David Cook,et al.  Drilling of carbon composites using a one shot drill bit. Part II: empirical modeling of maximum thrust force , 2006 .

[16]  D. Varas,et al.  Analysis of high velocity impacts of steel cylinders on thin carbon/epoxy woven laminates , 2013 .

[17]  João Paulo Davim,et al.  Experimental delamination analyses of CFRPs using different drill geometries , 2013 .

[18]  I. El-Sonbaty,et al.  Machinability analysis in drilling woven GFR/epoxy composites: Part II – Effect of drill wear , 2010 .

[19]  S. O. Ismail,et al.  A new analytical critical thrust force model for delamination analysis of laminated composites during drilling operation , 2017 .

[20]  António Torres Marques,et al.  Numerical simulation of the drilling process on carbon/epoxy composite laminates , 2006 .

[21]  Amimul Ahsan,et al.  A study of abrasive water jet machining process on glass/epoxy composite laminate , 2009 .

[22]  L. N. López de Lacalle,et al.  Analysis of ultrasonic-assisted drilling of Ti6Al4V , 2009 .

[23]  João Manuel R. S. Tavares,et al.  Drilling tool geometry evaluation for reinforced composite laminates , 2010 .

[24]  João Paulo Davim,et al.  Optimization of machining parameters at high speed drilling of carbon fiber reinforced plastic (CFRP) laminates , 2012 .

[25]  J. Paulo Davim,et al.  Machinability of Fibre-Reinforced Plastics , 2015 .

[26]  Aitzol Lamikiz,et al.  Mechanistic model for drills with double point-angle edges , 2009 .

[27]  Thai Nguyen,et al.  A study of delamination on graphite/epoxy composites in abrasive waterjet machining , 2008 .

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

[29]  Sikiru Oluwarotimi Ismail,et al.  Thermo-mechanical modelling of FRP cross-ply composite laminates drilling: delamination damage analysis , 2017 .

[30]  Sein Leung Soo,et al.  Modelling the orthogonal cutting of UD-CFRP composites: Development of a novel cohesive zone model , 2017 .

[31]  Aitzol Lamikiz,et al.  Monitoring deep twist drilling for a rapid manufacturing of light high-strength parts , 2011 .

[32]  Hong Hocheng,et al.  Parametric study on thrust force of core drill , 2007 .

[33]  F. Eyma,et al.  Study of trimming damages of CFRP structures in function of the machining processes and their impact on the mechanical behavior , 2014 .

[34]  Islam Shyha,et al.  Effect of laminate configuration and feed rate on cutting performance when drilling holes in carbon fibre reinforced plastic composites , 2010 .

[35]  Pedro Reis,et al.  Study of delamination in drilling carbon fiber reinforced plastics (CFRP) using design experiments , 2003 .

[36]  M.F.S.F. de Moura,et al.  Numerical prediction of delamination onset in carbon/epoxy composites drilling , 2008 .

[37]  Stephen R Hallett,et al.  Prediction of impact damage in composite plates , 2000 .

[38]  K. Patra,et al.  Mechanistic cutting force modelling for micro-drilling of CFRP composite laminates , 2017 .

[39]  J. Paulo Davim,et al.  Delamination analysis in high speed drilling of carbon fiber reinforced plastics (CFRP) using artificial neural network model , 2008 .

[40]  P. C. Upadhyay,et al.  On the Evaluation of Critical Thrust for Delamination-Free Drilling of Composite Laminates , 1999 .

[41]  C. Navarro,et al.  Experimental and numerical analysis of normal and oblique ballistic impacts on thin carbon/epoxy woven laminates , 2008 .

[42]  C. Santiuste,et al.  Delamination prediction in orthogonal machining of carbon long fiber-reinforced polymer composites , 2012 .

[43]  Inderdeep Singh,et al.  Drilling of uni-directional glass fiber reinforced plastics: Experimental and finite element study , 2008 .

[44]  Weilong Cong,et al.  A review of mechanical drilling for composite laminates , 2012 .

[45]  María Henar Miguélez,et al.  Experimental Analysis of the Influence of Drill Point Angle and Wear on the Drilling of Woven CFRPs , 2014, Materials.

[46]  T. Clyne,et al.  Fibre swelling during laser drilling of carbon fibre composites , 2006 .

[47]  Oliver Meier,et al.  Investigations on the thermal effect caused by laser cutting with respect to static strength of CFRP , 2008 .

[48]  Richard E. DeVor,et al.  A Mechanistic Model to Predict the Cutting Force System for Arbitrary Drill Point Geometry , 1998 .

[49]  C. C. Tsao,et al.  Prediction of thrust force of step drill in drilling composite material by Taguchi method and radial basis function network , 2008 .

[50]  Norberto Feito,et al.  Experimental analysis of special tool geometries when drilling woven and multidirectional CFRPs , 2016 .

[51]  Hong Hocheng,et al.  Computerized tomography and C-Scan for measuring delamination in the drilling of composite materials using various drills , 2005 .

[52]  João Manuel R. S. Tavares,et al.  Delamination analysis of carbon fibre reinforced laminates: Evaluation of a special step drill , 2009 .

[53]  M. Miguélez,et al.  Theoretical Estimation of Thermal Effects in Drilling of Woven Carbon Fiber Composite , 2014, Materials.

[54]  Ekkard Brinksmeier,et al.  Drilling of Multi-Layer Composite Materials consisting of Carbon Fiber Reinforced Plastics (CFRP), Titanium and Aluminum Alloys , 2002 .

[55]  Lorenzo Iannucci,et al.  An energy based damage mechanics approach to modelling impact onto woven composite materials-Part I: Numerical models , 2006 .