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

Islam Shyha; Sein Soo; David Aspinwall; S Bradley

doi:10.1177/2041297510393797

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

Islam Shyha, Sein Soo, David Aspinwall, S Bradley

Research output: Contribution to journal › Article

12 Citations (Scopus)

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 (similar to 100 mu m 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.

Original language	English
Pages (from-to)	1217-1223
Number of pages	7
Journal	Proceedings of the Institution of Mechanical Engineers Part B Journal of Engineering Manufacture
Volume	225
Issue number	B7
DOIs	https://doi.org/10.1177/2041297510393797
Publication status	Published - 1 Jul 2011

Keywords

delamination
carbon fibre-reinforced plastic
drilling
composites

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

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 (similar to 100 mu m 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.",

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AU - Shyha, Islam

AU - Soo, Sein

AU - Aspinwall, David

AU - Bradley, S

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N2 - 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 (similar to 100 mu m 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.

AB - 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 (similar to 100 mu m 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.

KW - delamination

KW - carbon fibre-reinforced plastic

KW - drilling

KW - composites

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DO - 10.1177/2041297510393797

M3 - Article

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JO - Proceedings of the Institution of Mechanical Engineers Part B Journal of Engineering Manufacture

JF - Proceedings of the Institution of Mechanical Engineers Part B Journal of Engineering Manufacture

IS - B7

ER -

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

Abstract

Keywords

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