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Influence of specimen preparation by machining on the failure of polymer matrix off-axis tensile coupons

Influence of specimen preparation by machining on the failure of polymer matrix off-axis tensile coupons
Influence of specimen preparation by machining on the failure of polymer matrix off-axis tensile coupons
Milling is a usual operation to obtain composite coupons for mechanical tests. However, the machining of composite materials using cutting tools leads to high temperatures and machined surface damage that will tend to reduce their mechanical performances. This study presents an investigation of the influence of cutting parameters on the damage level and mechanical response of off-axis glass/epoxy unidirectional coupons machined by side milling. The analysis of cut surface roughness and micrographic observations reveals the primary importance of the relative orientation of the fibres with respect to the cutting direction. An analysis based on design of experiments underlines the influence of the cutting parameters and cutting edge geometry on the ultimate tensile stresses of the off-axis coupons. The results show the importance of the cutting configuration and fibre orientation on the mechanical performances. Two parameters have been defined to quantify the cut surface damages and relate it to the decrease of failure stress. A thorough statistical analysis is also included to separate significant from non-significant results in this study.

0266-3538
1857-1872
Ghidossi, P.
47909f25-d882-4248-82e4-1f3258e06157
Mansori, M.
95fe21fa-d96c-44e9-a9c9-c6f9b823cc44
Pierron, F.
a1fb4a70-6f34-4625-bc23-fcb6996b79b4
Ghidossi, P.
47909f25-d882-4248-82e4-1f3258e06157
Mansori, M.
95fe21fa-d96c-44e9-a9c9-c6f9b823cc44
Pierron, F.
a1fb4a70-6f34-4625-bc23-fcb6996b79b4

Ghidossi, P., Mansori, M. and Pierron, F. (2006) Influence of specimen preparation by machining on the failure of polymer matrix off-axis tensile coupons. Composites Science and Technology, 66 (11-12), 1857-1872. (doi:10.1016/j.compscitech.2005.10.009).

Record type: Article

Abstract

Milling is a usual operation to obtain composite coupons for mechanical tests. However, the machining of composite materials using cutting tools leads to high temperatures and machined surface damage that will tend to reduce their mechanical performances. This study presents an investigation of the influence of cutting parameters on the damage level and mechanical response of off-axis glass/epoxy unidirectional coupons machined by side milling. The analysis of cut surface roughness and micrographic observations reveals the primary importance of the relative orientation of the fibres with respect to the cutting direction. An analysis based on design of experiments underlines the influence of the cutting parameters and cutting edge geometry on the ultimate tensile stresses of the off-axis coupons. The results show the importance of the cutting configuration and fibre orientation on the mechanical performances. Two parameters have been defined to quantify the cut surface damages and relate it to the decrease of failure stress. A thorough statistical analysis is also included to separate significant from non-significant results in this study.

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More information

Published date: September 2006
Organisations: Engineering Mats & Surface Engineerg Gp

Identifiers

Local EPrints ID: 210649
URI: http://eprints.soton.ac.uk/id/eprint/210649
ISSN: 0266-3538
PURE UUID: aa6472f9-a89d-4327-923d-49e6815761e8
ORCID for F. Pierron: ORCID iD orcid.org/0000-0003-2813-4994

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Date deposited: 13 Mar 2012 15:25
Last modified: 15 Mar 2024 03:35

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Contributors

Author: P. Ghidossi
Author: M. Mansori
Author: F. Pierron ORCID iD

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