Numerical prediction of delamination onset in carbon/epoxy composites drilling

Abstract Despite the fact that their physical properties make them an attractive family of materials, composites machining can cause several damage modes such as delamination, fibre pull-out, thermal degradation, and others. Minimization of axial thrust force during drilling reduces the probability of delamination onset, as it has been demonstrated by analytical models based on linear elastic fracture mechanics (LEFM). A finite element model considering solid elements of the ABAQUS® software library and interface elements including a cohesive damage model was developed in order to simulate thrust forces and delamination onset during drilling. Thrust force results for delamination onset are compared with existing analytical models.

[1]  Roberto Teti,et al.  Machining of Composite Materials , 2002 .

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

[3]  F. Lachaud,et al.  Drilling of composite structures , 2001 .

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

[5]  Hong Hocheng,et al.  Delamination During Drilling in Composite Laminates , 1990 .

[6]  F. Lachaud,et al.  Étude analytique et expérimentale du perçage de plaques minces en carbone/époxy , 2000 .

[7]  Arun Shukla,et al.  Investigation of stresses in he orthogonal cutting of fiber-reinforced plastics , 1996 .

[8]  E. Persson,et al.  Propagation of Hole Machining Defects in Pin-Loaded Composite Laminates , 1997 .

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

[10]  A. T. Marques,et al.  Modeling Compression Failure after Low Velocity Impact on Laminated Composites Using Interface Elements , 1997 .

[11]  K. Krishnamurthy,et al.  A neural network thrust force controller to minimize delamination during drilling of graphite-epoxy laminates , 1996 .

[12]  Wen-Chou Chen,et al.  Some experimental investigations in the drilling of carbon fiber-reinforced plastic (CFRP) composite laminates , 1997 .

[13]  P. K. Mallick,et al.  Composites engineering handbook , 1997 .

[14]  E. Persson,et al.  Effects of hole machining defects on strength and fatigue life of composite laminates , 1997 .

[15]  L.J. Wang,et al.  A mechanical model for predicting critical thrust forces in drilling composite laminates , 2001 .

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

[17]  Jin Pyo Jung,et al.  Critical thrust force at delamination propagation during drilling of angle-ply laminates , 2005 .