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Interlaminar fracture micro-mechanisms in toughened carbon fibre reinforced plastics investigated via synchrotron radiation computed tomography and laminography

Interlaminar fracture micro-mechanisms in toughened carbon fibre reinforced plastics investigated via synchrotron radiation computed tomography and laminography
Interlaminar fracture micro-mechanisms in toughened carbon fibre reinforced plastics investigated via synchrotron radiation computed tomography and laminography
Synchrotron Radiation Computed Tomography (SRCT) and Synchrotron Radiation Computed Laminography (SRCL) permit 3D non-destructive evaluation of fracture micro-mechanisms at high spatial resolutions. Two types of particle-toughened Carbon Fibre Reinforced Polymer (CFRP) composites were loaded to allow crack growth in Modes I and II to be isolated and observed in standard and non-standard specimen geometries. Both materials failed in complex and distinct failure modes, showing that interlaminar fracture in these materials involves a process zone rather than a singular crack tip. The work indicates that incorporating particle/resin, fibre/interlayer and neat resin failure is essential within models for material response, since the competition between these mechanisms to provide the energetically favourable crack path influences the macro-scale toughness. The work uniquely combines the strengths of SRCT and SRCL to compare failure micro- mechanisms between two specimen geometries, whilst assessing any edge effects and providing powerful insight into the complex micro-mechanical behaviour of these materials.
A. polymer-matrix composites (PMCs), A. particle-reinforcement, B. delamination, D. non-destructive testing
1359-835X
176-183
Borstnar, G.
d391eccc-0f99-473c-b7ba-e58f8bb952b4
Mavrogordato, M.N.
f3e0879b-118a-463a-a130-1c890e9ab547
Helfen, L.
f87be34a-12b5-448a-aa70-55af4ae05584
Sinclair, I.
6005f6c1-f478-434e-a52d-d310c18ade0d
Spearing, S.M.
9e56a7b3-e0e8-47b1-a6b4-db676ed3c17a
Borstnar, G.
d391eccc-0f99-473c-b7ba-e58f8bb952b4
Mavrogordato, M.N.
f3e0879b-118a-463a-a130-1c890e9ab547
Helfen, L.
f87be34a-12b5-448a-aa70-55af4ae05584
Sinclair, I.
6005f6c1-f478-434e-a52d-d310c18ade0d
Spearing, S.M.
9e56a7b3-e0e8-47b1-a6b4-db676ed3c17a

Borstnar, G., Mavrogordato, M.N., Helfen, L., Sinclair, I. and Spearing, S.M. (2015) Interlaminar fracture micro-mechanisms in toughened carbon fibre reinforced plastics investigated via synchrotron radiation computed tomography and laminography. Composites Part A: Applied Science and Manufacturing, 71, 176-183. (doi:10.1016/j.compositesa.2015.01.012).

Record type: Article

Abstract

Synchrotron Radiation Computed Tomography (SRCT) and Synchrotron Radiation Computed Laminography (SRCL) permit 3D non-destructive evaluation of fracture micro-mechanisms at high spatial resolutions. Two types of particle-toughened Carbon Fibre Reinforced Polymer (CFRP) composites were loaded to allow crack growth in Modes I and II to be isolated and observed in standard and non-standard specimen geometries. Both materials failed in complex and distinct failure modes, showing that interlaminar fracture in these materials involves a process zone rather than a singular crack tip. The work indicates that incorporating particle/resin, fibre/interlayer and neat resin failure is essential within models for material response, since the competition between these mechanisms to provide the energetically favourable crack path influences the macro-scale toughness. The work uniquely combines the strengths of SRCT and SRCL to compare failure micro- mechanisms between two specimen geometries, whilst assessing any edge effects and providing powerful insight into the complex micro-mechanical behaviour of these materials.

Text
OpenAccessGreen_Interlaminar Fracture Micro-Mechanisms in Toughened Carbon Fibre Reinforced Plastics Investigated via Synchrotron Radiation Computed Tomography and Laminography.pdf - Accepted Manuscript
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More information

Accepted/In Press date: 18 January 2015
e-pub ahead of print date: 28 January 2015
Published date: April 2015
Keywords: A. polymer-matrix composites (PMCs), A. particle-reinforcement, B. delamination, D. non-destructive testing
Organisations: Engineering Mats & Surface Engineerg Gp

Identifiers

Local EPrints ID: 382932
URI: http://eprints.soton.ac.uk/id/eprint/382932
ISSN: 1359-835X
PURE UUID: 84064bfe-67c4-4da6-8779-d84a02fae4e8
ORCID for S.M. Spearing: ORCID iD orcid.org/0000-0002-3059-2014

Catalogue record

Date deposited: 16 Oct 2015 15:42
Last modified: 10 Dec 2019 01:45

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