Realising damage-tolerant nacre-inspired CFRP

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Title: Realising damage-tolerant nacre-inspired CFRP
Authors: Narducci, F
Lee, K
Pinho, ST
Item Type: Journal Article
Abstract: Inthiswork,anacre-inspiredCarbonFibreReinforcedPolymer(CFRP)compositeis designed,synthesisedandtested. Analyticalandnumericalmodelsareusedtodesign a tiled micro-structure, mimicking the staggered arrangement of ceramic platelets in nacreandexploitinggeometricalinterlocksforcrackdeflectionanddamagediffusion. The designed pattern of tiles is then laser-engraved in the laminate plies. In order to increase the damage-spreading capability of the material, a thin layer of poly(lactic acid) (PLA) is film-cast on the interlaminar region, both as a continuous film and as a pattern of fractal-shaped patches. Three-point bending tests show how the nacre-like micro-structure succeeds in deflecting cracks, with damage diffusion being significantly improved by the addition of PLA at the interface between tiles. It is observed that a texture of discontinuous fractal-shaped PLA patches can increase damage diffusion, by promoting the unlocking of tiles whilst preserving the interface strength.
Issue Date: 1-Jul-2018
Date of Acceptance: 8-Apr-2018
ISSN: 0022-5096
Publisher: Elsevier
Start Page: 391
End Page: 402
Journal / Book Title: Journal of the Mechanics and Physics of Solids
Volume: 116
Copyright Statement: © 2018 Elsevier Ltd. All rights reserved. This manuscript is 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: 01 Mathematical Sciences
02 Physical Sciences
09 Engineering
Mechanical Engineering & Transports
Publication Status: Published
Online Publication Date: 2018-04-11
Appears in Collections:Faculty of Engineering

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