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Title: Drilling in carbon/epoxy composites: experimental investigations and finite element implementation
Authors: Phadnis, Vaibhav A.
Makhdum, Farrukh
Roy, Anish
Silberschmidt, Vadim V.
Keywords: Laminates
Finite element analysis
Issue Date: 2013
Publisher: © Elsevier
Citation: PHADNIS, V.A. ... et al., 2013. Drilling in carbon/epoxy composites: experimental investigations and finite element implementation. Composites Part A: Applied Science and Manufacturing, 47, pp.41-51.
Abstract: Drilling carbon fibre reinforced plastics (CFRPs) is typically cumbersome due to high structural stiffness of the composite and low thermal conductivity of plastics. Resin-rich areas between neighbouring plies in a laminate are prone to drilling-induced delamination that compromises structural integrity. Appropriate selection of drilling parameters is believed to mitigate damage in CFRPs. In this context, we study the effect of cutting parameters on drilling thrust force and torque during the machining process both experimentally and numerically. A unique three-dimensional (3D) finite element model of drilling in a composite laminate, accounting for complex kinematics at the drill-workpiece interface is developed. Cohesive zone elements are used to simulate interply delamination in a composite. Experimental quantification of drilling-induced damage is performed by means of X-ray micro computed tomography. The developed numerical model is shown to agree reasonably well with the experiments. The model is used to predict optimal drilling parameters in carbon/epoxy composites.
Description: This article was published in the journal, Composites Part A: Applied Science and Manufacturing [© Elsevier] and the definitive version is available at: http://dx.doi.org/10.1016/j.compositesa.2012.11.020
Version: Accepted for publication
DOI: 10.1016/j.compositesa.2012.11.020
URI: https://dspace.lboro.ac.uk/2134/11689
Publisher Link: http://dx.doi.org/10.1016/j.compositesa.2012.11.020
ISSN: 1359-835X
Appears in Collections:Published Articles (Mechanical, Electrical and Manufacturing Engineering)

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