Exploring the pseudo-ductility of aligned hybrid discontinuous composites using controlled fibre-type arrangements

Title: Exploring the pseudo-ductility of aligned hybrid discontinuous composites using controlled fibre-type arrangements
Authors: Finley, JM
Yu, H
Longana, ML
Pimenta, S
Shaffer, MSP
Potter, KD
Item Type: Journal Article
Abstract: Pseudo-ductility presents a potential means for preventing catastrophic failure in composite materials; large deformations will prevent brittle fracture and provide warning before final failure. This work explores how the pseudo-ductility and strength of aligned hybrid discontinuous composites can be controlled by manipulating the arrangement of different fibre types. Aligned carbon/glass hybrid specimens with different fibre arrangements are manufactured and tested using a modification to the High Performance Discontinuous Fibre (HiPerDiF) method. Experimental results are complemented by an improved virtual testing framework, which accurately captures the fracture behaviour of a range of hybrid discontinuous composite microstructures. With a randomly intermingled fibre arrangement as a baseline, a 27% increase in strength and a 44% increase in pseudo-ductility can be achieved when low elongation fibres are completely isolated from one-another. Results demonstrate that the HiPerDiF method is the current state-of-the-art for maximising the degree of intermingling and hence the pseudo-ductility of hybrid composites.
Issue Date: 8-Dec-2017
Date of Acceptance: 30-Nov-2017
ISSN: 1359-835X
Publisher: Elsevier
Start Page: 592
End Page: 606
Journal / Book Title: Composites Part A: Applied Science and Manufacturing
Volume: 107
Copyright Statement: © 2017 Elsevier Ltd. All rights reserved. This manuscript is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
Sponsor/Funder: Engineering & Physical Science Research Council (E
Royal Academy of Engineering
Funder's Grant Number: AERO/RB1527
Keywords: 0912 Materials Engineering
0913 Mechanical Engineering
0901 Aerospace Engineering
Publication Status: Accepted
Appears in Collections:Faculty of Engineering
Mechanical Engineering
Faculty of Natural Sciences

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