Effect of Surface Play on the Quality of the Hole when Drilling Multi-Directional CFRP Composites

Abstract:

The effect of surface ply on the quality of the hole produced when drilling multi-directional carbon fiber reinforced plastic (CFRP) composite laminates was investigated. A series of drilling experiments are performed using a carbide drill tool on two multi-directional CFRP composite laminates. The two composite laminates have similar stacking sequence except the surface plies, namely woven fabric and fiberglass scrim. The thrust force and torque was collected during the drilling process. The quality of the drilled hole was examined through surface roughness measurement, fiber pull out, and delamination. Thrust force was found to be higher for the composite laminate with woven fabric surface plies. The exit delamination factor measured from the holes with woven fabric surface plies found to be lower than the holes with fiberglass scrim surface plies.

• Periodical: Applied Mechanics and Materials (Volume 330)
• Pages: 117-122
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.330.117
• Online since: June 2013
• Authors: Eshetu D. Eneyew, M. Ramulu
• Keywords: Carbon Fiber Reinforced Polymer/Plastic (CFRP), Composite, Drilling, Machining, Multi Directional, Quality, Surface Ply

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