Experimental Study on Drilling Process of CFRP Composite Laminate

Azmir Azhari; Praveena Nair Sivasankaran; Z. Hamedon

doi:10.4028/www.scientific.net/MSF.638-642.927

Paper Titles

Microstructure and Thermal Diffusivity of Micro- and Nano-Sized YSZ
p.900

Internal Stress in EB-PVD Thermal Barrier Coating under Heat Cycle
p.906

Application of the Concept of Local Fatigue Strength after Shot Peening of Notched Components Based on Numerical Simulations
p.912

In Situ Observations of the Densification Behavior of WC-FeAl-B Composites during Liquid Phase Sintering
p.921

Experimental Study on Drilling Process of CFRP Composite Laminate
p.927

Properties of Small Rotary Engine Housing Fabricated by Aluminum Alloy Matrix Composites
p.933

Effect of Milling Parameters on Morphology and Grain Size of WO₃ and Al Particles for Fabricating WO₃/Al Composites
p.939

Evaluation of Tools and Cutting Conditions on Carbon Fibre Reinforced Laminates
p.944

Effect of Calcining Temperature of Ceramic Powders Prepared from TEOS/Boehmite Sol-Gel on Tribological Behavior of Brake Lining Materials
p.950

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Experimental Study on Drilling Process of CFRP Composite Laminate

Abstract:

This thesis deals with carbon fiber reinforced plastics (CFRP) composites, an advanced material which is widely used in manufacturing aircrafts because of their unique mechanical and physical properties. The research mainly involved drilling of CFRP. This study is focused on analyzing the thrust force and delamination against drilling parameters namely feed rate, spindle speed and type of tool materials. Also, the optimal parameters were chosen using an optimization method called D optimal. It was observed that the higher the feed rate and spindle speed employed, the higher the thrust force and delamination occur. The split point fibre (SPF) drill gave the lowest values of thrust force and delamination. Based on the optimal parameters, a verification test was conducted and the prediction error was 2.3% and 5.6% for thrust force and delamination respectively. This shows, that the optimal parameters obtained is reliable as it could improve the process considerably. The results of this study could be used as a reference for further research and studies on drilling of CFRP.