Bio-inspired non-self-similar hierarchical microstructures for damage tolerance
File(s)
Author(s)
Henry, J
Pimenta, S
Type
Journal Article
Abstract
Natural composites achieve damage tolerance through a complex microstructure with several hierarchical levels; this has inspired the development of synthetic composites with hierarchical microstructures, in order to overcome their inherent brittleness. However, while most natural composites have non-self-similar hierarchical microstructures, most synthetic hierarchical designs in the literature use self-similar features. The aim of this work is therefore to investigate whether non-self-similar hierarchical composites could be more damage tolerant than their self-similar equivalent. Non-self-similar hierarchical composites are designed, manufactured and tested; results show that releasing the self-similar constraint can increase the design space of composite microstructures and lead to materials with better damage tolerance, with a clearer warning before failure, and with more stable failure mechanisms.
Date Issued
2021-01-05
Date Acceptance
2020-07-25
Citation
Composites Science and Technology, 2021, 201, pp.1-12
ISSN
0266-3538
Publisher
Elsevier
Start Page
1
End Page
12
Journal / Book Title
Composites Science and Technology
Volume
201
Copyright Statement
© 2021 Elsevier Ltd. All rights reserved. This manuscript is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licence http://creativecommons.org/licenses/by-nc-nd/4.0/
Sponsor
Royal Academy of Engineering
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000596314200009&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Grant Number
RF/133
Subjects
Science & Technology
Technology
Materials Science, Composites
Materials Science
polymer-matrix composites (PMCs)
non-linear behaviour
Finite element analysis (FEA)
Stress transfer
Mechanical testing
Publication Status
Published
Article Number
ARTN 108374
Date Publish Online
2020-08-07