Experimental analysis of GFRP laminates subjected to compression after drilling

Zarif Karimi, N., Heidary, H., Fotouhi, M. and Minak, G. (2017) Experimental analysis of GFRP laminates subjected to compression after drilling. Composite Structures, 169, pp. 144-152. (doi: 10.1016/j.compstruct.2017.01.017)

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Abstract

This paper presents an experimental study of drilling-induced delamination on the compressive properties of woven glass fiber-reinforced epoxy composites. In the drilling of laminated composites, interlaminar cracking or delamination has a detrimental effect on compressive properties. The onset of delamination and the extent of the damage are governed by the cutting forces developed during the drilling process. High cutting forces, in turn, result from the use of improper drilling parameters. This study investigates the effects of feed rate and spindle speed on delamination and residual compressive strength. The composite laminates were cut into the standard dimensions of compression after impact specimens. The drilling of composite specimens was conducted at three different levels of spindle speed and feed rate based on general full factorial design. Analysis of variance was used to find the percentage contribution of the drilling parameters and it was found that feed rate has the most significant influence on the residual compressive strength. A polynomial regression model was also developed to express the residual compressive strength as a function of the selected process parameters.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Fotouhi, Dr Mohammad
Authors: Zarif Karimi, N., Heidary, H., Fotouhi, M., and Minak, G.
Subjects:T Technology > T Technology (General)
T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TJ Mechanical engineering and machinery
College/School:College of Science and Engineering > School of Engineering > Aerospace Sciences
Journal Name:Composite Structures
Publisher:Elsevier
ISSN:0263-8223
ISSN (Online):1879-1085
Published Online:11 January 2017
Copyright Holders:Copyright © 2017 Elsevier Ltd.
First Published:First published in Composite Structures 169:144-152
Publisher Policy:Reproduced in accordance with the publisher copyright policy

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