Engineering the translaminar fracture behaviour of thin-ply composites

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Title: Engineering the translaminar fracture behaviour of thin-ply composites
Author(s): Bullegas, G
Pinho, ST
Pimenta, S
Item Type: Journal Article
Abstract: © 2016 Elsevier Ltd.Bio-inspired patterns of micro-cuts perpendicular to the fibre direction in thin-ply CFRP laminates have been used to increase the translaminar fracture toughness of the material. An analytical model to predict the probability of bundle pull-out during translaminar crack propagation was developed and validated through an experimental parametric study. The model was used to design three hierarchical patterns of micro-cuts and the patterns have been tested using Compact Tension specimens. The increase in fracture toughness for the three patterns was +15%, +60% and +214% when compared with the baseline material, thereby demonstrating the potential of engineering the fracture surface in CFRPs through well-designed patterns of micro-cuts to improve the damage tolerance of the material.
Publication Date: 7-Jun-2016
Date of Acceptance: 5-Jun-2016
ISSN: 0266-3538
Publisher: Elsevier
Start Page: 110
End Page: 122
Journal / Book Title: Composites Science and Technology
Volume: 131
Copyright Statement: © 2016 Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Sponsor/Funder: Engineering & Physical Science Research Council (EPSRC)
Funder's Grant Number: EP/M002500/1
Keywords: Materials
09 Engineering
Publication Status: Published
Appears in Collections:Faculty of Engineering
Mechanical Engineering

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