Effects of machine stiffness and cutting tool design on the surface quality and flexural strength of edge trimmed carbon fibre reinforced polymers

Abstract

A 22 full factorial design of experiment is used to investigate the effects of two machining platforms (5-axis elevated gantry versus 6-axis articulated robotic system) and two cutting tool designs (burr versus herringbone) on surface metrics and flexural strength of a 14 ply T300 2x2 carbon fibre reinforced polymer.

A range of areal metrics were considered to characterise the surface with Sal and Stdi best able to represent differences due to the choice of robotic system or overhead gantry. The robotic system produces coupons with flexural strengths up to 26% higher than the overhead gantry. The choice of tool has a less significant effect however machine-tool interactions do play a role in the flexural strength.

Analysis using scanning electron microscopy shows that defects may be obscured by smeared matrix which may contribute to overall flexural strength differences.

Metadata

Authors/Creators:	Ashworth, S. https://orcid.org/0000-0003-1192-6127 Fairclough, J.P.A. https://orcid.org/0000-0002-1675-5219 Takikawa, Y. Scaife, R.J. Ghadbeigi, H. https://orcid.org/0000-0001-6507-2353 Kerrigan, K.M. https://orcid.org/0000-0001-6048-9408 Meredith, J.
Copyright, Publisher and Additional Information:	© 2019 Elsevier. This is an author produced version of a paper subsequently published in Composites Part A: Applied Science and Manufacturing. Uploaded in accordance with the publisher's self-archiving policy. Article available under the terms of the CC-BY-NC-ND licence (https://creativecommons.org/licenses/by-nc-nd/4.0/).
Dates:	Accepted: 23 January 2019 Published (online): 24 January 2019 Published: April 2019
Institution:	The University of Sheffield
Academic Units:	The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Mechanical Engineering (Sheffield)
Depositing User:	Symplectic Sheffield
Date Deposited:	31 Jan 2019 11:01
Last Modified:	16 Nov 2021 13:52
Status:	Published
Publisher:	Elsevier
Refereed:	Yes
Identification Number:	https://doi.org/10.1016/j.compositesa.2019.01.019

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Effects of machine stiffness and cutting tool design on the surface quality and flexural strength of edge trimmed carbon fibre reinforced polymers

Abstract

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