Volume 10, Issue 4, 2001

Influence of Tool Status on Flexural Strength of machined CFRP Components

J. Ramkumar, R.Krishnamurthy, and S.K. Malhotra

Indian Institute of Technology, Madras, India

(Received 2/01; accepted 8/01)

Abstract

Machining trials have been carried out on Carbon Fibre Reinforced Plastics (CFRP) High Speed Steel (HSS) traditional & modified point geometry and Tungsten Carbide (WC) tipped drills. Among the drills, modified point geometry out performed others by sustaining higher order life. This has been supported by monitoring thrust, torque and Acoustic Emission (AE) during drilling trials.

Keywords: Drilling, Composites, Tungsten carbide inserted drills (WC), Acoustic emission (A.E.), Thrust, Torque, Modified point geometry (slot drill), Tool wear, Flexural strength, Tool life.


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