Exploring the pseudo-ductility of aligned hybrid discontinuous composites using controlled fibre-type arrangements
Author(s)
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.
Date Issued
2017-12-08
Date Acceptance
2017-11-30
Citation
Composites Part A: Applied Science and Manufacturing, 2017, 107, pp.592-606
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 http://creativecommons.org/licenses/by-nc-nd/4.0/
Sponsor
Engineering & Physical Science Research Council (E
Royal Academy of Engineering
Grant Number
AERO/RB1527
RF/133
Subjects
0912 Materials Engineering
0913 Mechanical Engineering
0901 Aerospace Engineering
Materials
Publication Status
Accepted