The effect of peel ply layer on hole integrity when drilling carbon fibre-reinforced plastic

Shyha, Islam, Soo, Sein Leung, Aspinwall, David and Bradley, Sam (2011) The effect of peel ply layer on hole integrity when drilling carbon fibre-reinforced plastic. Proceedings of the Institution of Mechanical Engineers Part B Journal of Engineering Manufacture, 225 (7). pp. 1217-1223. ISSN 0954-4054

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Abstract

Fibre/matrix delamination is a common problem when cutting carbon fibre-reinforced plastic (CFRP) that can have a detrimental effect on workpiece mechanical properties and hence compromise the in-service performance of the composite part. The present paper details experimental results when drilling small holes (1.5 mm diameter) through backed and un-backed CFRP laminates using tungsten carbide twist drills to determine the effect of peel ply layers (∼100 µm thick nylon sheet attached on both sides of 3 mm thick laminates) on hole entry and exit delamination. Considerable reduction in damage relating to fuzzing, spalling, edge chipping, and delamination was observed when drilling the nylon-backed CFRP material, with scanning electron micrographs showing significantly inferior hole quality for the corresponding un-backed workpieces, particularly at hole exit.

Item Type:	Article
Uncontrolled Keywords:	drilling, composites, carbon fibre-reinforced plastic, delamination
Subjects:	H700 Production and Manufacturing Engineering
Department:	Faculties > Engineering and Environment > Mechanical and Construction Engineering
Depositing User:	Islam Shyha
Date Deposited:	21 Jan 2013 09:54
Last Modified:	10 Oct 2019 22:30
URI:	http://nrl.northumbria.ac.uk/id/eprint/11020

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