Pseudo-ductile failure mechanism introduced into finger jointed thermoplastic PES interleaved CFRC

Title: Pseudo-ductile failure mechanism introduced into finger jointed thermoplastic PES interleaved CFRC
Author(s): Anthony, DB
Bacarreza Nogales, O
Shaffer, M
Bismarck, A
Robinson, P
Pimenta, S
Item Type: Conference Paper
Abstract: Pre-cut unidirectional carbon fibre prepreg composites, with an overlapped finger-joint architecture, were modified through the addition of polyethersulfone (PES) interleaves. The properties arising from these finger-jointed configurations were strongly dependent on the interply overlap region. When the tough thermoplastic interleaves spanned only the central portion of the overlap, a crack arresting failure mechanism was observed in tension. A pronounced plateau region or pseudo-ductile response was shown in conjunction with a strain hardening response after crack arrest. The local strain-to-failure of PES interleaved samples was ~3.2%, an increase of 85% compared to the pre-cut baseline (strain-to-failure 1.6%, pre-cut specimens without interleaves).
Publication Date: 24-Jun-2018
Date of Acceptance: 25-May-2018
Sponsor/Funder: Engineering & Physical Science Research Council (E
Funder's Grant Number: AERO/RB1527
Conference Name: ECCM18 - 18th European Conference on Composite Materials
Copyright Statement: © 2018 ECCM. Made available by permission of the ECCM
Publication Status: Published online
Start Date: 2018-06-24
Finish Date: 2018-06-28
Conference Place: Athens, Greece
Online Publication Date: 2018-07-02
Appears in Collections:Chemistry
Chemical Engineering

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