Study of the acoustic emission response to a core-shell rubber-toughened, high-temperature composite

Samuel Swan, Timothy M. Devenport, Seyed Mohsen Seraji, James M. Griffin, Bekim V Gashi, Claudia Creighton, Russell J. Varley

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)
6 Downloads (Pure)

Abstract

This work explores the effect of core-shell rubber (CSR) addition on the cure reaction and resulting mechanical and thermal properties of a highly cross-linked network made from 4,4′- tetraglycidyl diamino diphenyl methane and 3,3′-diamino diphenyl sulphone. Up to 20 wt% of a CSR rubber, composed of a soft polybutadiene core and a hard poly methyl methacrylate (PMMA) shell was dispersed in the epoxy/amine and after cure was found to increase the glass transition temperature and thermal degradation temperatures modestly, while reducing the char yield. Flexural properties also reduced with CSR addition, although fracture toughness (KIC) was increased by 45% at 20 wt% of CSR. Furthermore, the fracture strain energy release rate (GIC) of the corresponding carbon fibre composite at the same CSR concentration, increased by almost 115%. Acoustic emission spectroscopy is introduced as a tool for investigating crack propagation during mode I loading and identifying any differences in the failure mechanism between the unmodified and the 20 wt% CSR-modified carbon fibre composites.
Original languageEnglish
Pages (from-to)5609–5623
Number of pages15
JournalJournal of Materials Science
Volume56
Issue number9
DOIs
Publication statusPublished - 3 Jan 2021

Bibliographical note

The final publication is available at Springer via http://dx.doi.org/10.1007/s10853-020-05612-4

Copyright © and Moral Rights are retained by the author(s) and/ or other copyright owners. A copy can be downloaded for personal non-commercial research or study, without prior permission or charge. This item cannot be reproduced or quoted extensively from without first obtaining permission in writing from the copyright holder(s). The content must not be changed in any way or sold commercially in any format or medium without the formal permission of the copyright holders.

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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