The University of Southampton
University of Southampton Institutional Repository

Detailed experimental validation and benchmarking of six models for longitudinal tensile failure of unidirectional composites

Detailed experimental validation and benchmarking of six models for longitudinal tensile failure of unidirectional composites
Detailed experimental validation and benchmarking of six models for longitudinal tensile failure of unidirectional composites
Longitudinal tensile failure of unidirectional fibre-reinforced composites remains difficult to predict accurately. The key underlying mechanism is the tensile failure of individual fibres. This paper objectively measured the relevant input data and performed a detailed experimental validation of blind predictions of six state-of-the-art models using high-resolution in-situ synchrotron radiation computed tomography (SRCT) measurements on two carbon fibre/epoxy composites. Models without major conservative assumptions regarding stress redistributions around fibre breaks significantly overpredicted failure strains and strengths, but predictions of models with at least one such assumption were in better agreement for those properties. Moreover, all models failed to predict fibre break (and cluster) development accurately, suggesting that it is vital to improve experimental methods to characterise accurately the in-situ strength distribution of fibres within the composites. As a result of detailed measurements of all required input parameters and advanced SRCT experiments, this paper establishes a benchmark for future research on longitudinal tensile failure.
Fracture, Material modelling, Polymer-matrix composites (PMCs), X-ray computed tomography
0263-8223
Breite, Christian
c8c39a72-d72e-40c4-867e-ee5d391c084b
Melnikov, Arsen
b89ca529-1874-41ad-96ce-24d1f9d8f8ee
Turon, Albert
c9ce7ccd-e14f-4ded-8adb-5b853b0b740b
Schoberl, Erich
eccd55e0-c7fa-4903-8e20-d9dd52c3454a
Mavrogordato, Mark
f3e0879b-118a-463a-a130-1c890e9ab547
Sinclair, Ian
6005f6c1-f478-434e-a52d-d310c18ade0d
Lomov, Stepan V.
4d2b96b7-9683-4e15-b3c4-88d9cb3b5ffa
de Morais, A
58052a05-e9c4-493a-8635-344d3c24bf9c
Le Bourlot, C.
c6efe862-55ca-43ba-a483-0dd4ae3d97a0
Maire, E.
c26da450-2087-4d44-93ac-c149804d1770
Otero, F
94f95ec7-4d7a-4e8b-b8a5-ab0d0513094f
McCartney, Neil
4719626e-a81f-4806-9cac-382afe76376d
Spearing, Mark
9e56a7b3-e0e8-47b1-a6b4-db676ed3c17a
Pimenta, Soraia
8b185680-85ab-4324-b082-a05c69f7e3c7
Camanho, Pedro P.
c96e1716-188d-43ca-b2a2-ce6b3e2d79e7
Gorbatikh, Larissa
ecd17611-fd2d-4ac6-8cd4-20d1ede90366
van Paepagem, Wim
b5134a67-317e-4032-ba9e-17cbeed9caf1
Swolfs, Yentl
8fb273b4-39aa-45bc-b5b4-b8787793460a
Breite, Christian
c8c39a72-d72e-40c4-867e-ee5d391c084b
Melnikov, Arsen
b89ca529-1874-41ad-96ce-24d1f9d8f8ee
Turon, Albert
c9ce7ccd-e14f-4ded-8adb-5b853b0b740b
Schoberl, Erich
eccd55e0-c7fa-4903-8e20-d9dd52c3454a
Mavrogordato, Mark
f3e0879b-118a-463a-a130-1c890e9ab547
Sinclair, Ian
6005f6c1-f478-434e-a52d-d310c18ade0d
Lomov, Stepan V.
4d2b96b7-9683-4e15-b3c4-88d9cb3b5ffa
de Morais, A
58052a05-e9c4-493a-8635-344d3c24bf9c
Le Bourlot, C.
c6efe862-55ca-43ba-a483-0dd4ae3d97a0
Maire, E.
c26da450-2087-4d44-93ac-c149804d1770
Otero, F
94f95ec7-4d7a-4e8b-b8a5-ab0d0513094f
McCartney, Neil
4719626e-a81f-4806-9cac-382afe76376d
Spearing, Mark
9e56a7b3-e0e8-47b1-a6b4-db676ed3c17a
Pimenta, Soraia
8b185680-85ab-4324-b082-a05c69f7e3c7
Camanho, Pedro P.
c96e1716-188d-43ca-b2a2-ce6b3e2d79e7
Gorbatikh, Larissa
ecd17611-fd2d-4ac6-8cd4-20d1ede90366
van Paepagem, Wim
b5134a67-317e-4032-ba9e-17cbeed9caf1
Swolfs, Yentl
8fb273b4-39aa-45bc-b5b4-b8787793460a

Breite, Christian, Melnikov, Arsen, Turon, Albert, Schoberl, Erich, Mavrogordato, Mark, Sinclair, Ian, Lomov, Stepan V., de Morais, A, Le Bourlot, C., Maire, E., Otero, F, McCartney, Neil, Spearing, Mark, Pimenta, Soraia, Camanho, Pedro P., Gorbatikh, Larissa, van Paepagem, Wim and Swolfs, Yentl (2022) Detailed experimental validation and benchmarking of six models for longitudinal tensile failure of unidirectional composites. Composite Structures, 279, [114828]. (doi:10.1016/j.compstruct.2021.114828).

Record type: Article

Abstract

Longitudinal tensile failure of unidirectional fibre-reinforced composites remains difficult to predict accurately. The key underlying mechanism is the tensile failure of individual fibres. This paper objectively measured the relevant input data and performed a detailed experimental validation of blind predictions of six state-of-the-art models using high-resolution in-situ synchrotron radiation computed tomography (SRCT) measurements on two carbon fibre/epoxy composites. Models without major conservative assumptions regarding stress redistributions around fibre breaks significantly overpredicted failure strains and strengths, but predictions of models with at least one such assumption were in better agreement for those properties. Moreover, all models failed to predict fibre break (and cluster) development accurately, suggesting that it is vital to improve experimental methods to characterise accurately the in-situ strength distribution of fibres within the composites. As a result of detailed measurements of all required input parameters and advanced SRCT experiments, this paper establishes a benchmark for future research on longitudinal tensile failure.

Text
Benchmarking real cases_manuscript - Accepted Manuscript
Download (11MB)

More information

Accepted/In Press date: 12 October 2021
e-pub ahead of print date: 16 October 2021
Published date: 1 January 2022
Additional Information: Funding Information: The research leading to these results has been conducted in the framework of the FiBreMoD project and has received funding from the European Union's Horizon 2020 research and innovation programme under the Marie Sk?odowska-Curie grant agreement No. 722626. Compressive tests on the neat epoxy resin were performed at the mechanical lab of the Institute of Mechanics, Materials and Civil Engineering (IMMC), Universit? Catholique de Louvain (UCLouvain) with the kind support of J. Chevalier and T. Pardoen. M.J. Emerson from QIM, Technical University of Denmark (DTU) is thankfully acknowledged for the hands-on training sessions and support of the Insegt Fibre segmentation toolbox. Support of C. Schlep?tz from TOMCAT beamline at Swiss Light Source for optimising the acquisition settings during the beamtimes under proposal IDs 20161157 and 20171494 is thankfully acknowledged. J.M. Guerrero would like to acknowledge the grant BES-2016-078270 from the ?Subprograma Estatal de Formaci?n del MICINN? co-financed by the European Social Fund, and all authors from the University of Girona acknowledge the funding from the Spanish project RTI2018-097880-B-I00. The work of M. Hajikazemi forms part of the research programme of DPI, project 812 T17. S. Pimenta acknowledges the funding from the Royal Academy of Engineering in the scope of her Research Fellowship on ?Multiscale discontinuous composites for high-volume and sustainable applications? (2015-2019). R.P. Tavares and P.P. Camanho would like to thank the financial support provided by FCT - Funda??o para a Ci?ncia e a Tecnologia through National Funds in the scope of project MITP-TB/PFM/0005/2013. The authors would also like to thank A.R. Bunsell, S. Joann?s, J. Rojek and A. Thionnet for their help in setting up the instructions. Funding Information: The research leading to these results has been conducted in the framework of the FiBreMoD project and has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No. 722626. Compressive tests on the neat epoxy resin were performed at the mechanical lab of the Institute of Mechanics, Materials and Civil Engineering (IMMC), Université Catholique de Louvain (UCLouvain) with the kind support of J. Chevalier and T. Pardoen. M.J. Emerson from QIM, Technical University of Denmark (DTU) is thankfully acknowledged for the hands-on training sessions and support of the Insegt Fibre segmentation toolbox. Support of C. Schlepütz from TOMCAT beamline at Swiss Light Source for optimising the acquisition settings during the beamtimes under proposal IDs 20161157 and 20171494 is thankfully acknowledged. J.M. Guerrero would like to acknowledge the grant BES-2016-078270 from the ‘Subprograma Estatal de Formación del MICINN’ co-financed by the European Social Fund, and all authors from the University of Girona acknowledge the funding from the Spanish project RTI2018-097880-B-I00. The work of M. Hajikazemi forms part of the research programme of DPI, project 812 T17. S. Pimenta acknowledges the funding from the Royal Academy of Engineering in the scope of her Research Fellowship on “Multiscale discontinuous composites for high-volume and sustainable applications” (2015-2019). R.P. Tavares and P.P. Camanho would like to thank the financial support provided by FCT - Fundação para a Ciência e a Tecnologia through National Funds in the scope of project MITP-TB/PFM/0005/2013. The authors would also like to thank A.R. Bunsell, S. Joannès, J. Rojek and A. Thionnet for their help in setting up the instructions. Publisher Copyright: © 2021 Elsevier Ltd
Keywords: Fracture, Material modelling, Polymer-matrix composites (PMCs), X-ray computed tomography

Identifiers

Local EPrints ID: 451945
URI: http://eprints.soton.ac.uk/id/eprint/451945
ISSN: 0263-8223
PURE UUID: 733a9a56-28a8-402e-9a68-1e53ab3e30bc
ORCID for Mark Spearing: ORCID iD orcid.org/0000-0002-3059-2014

Catalogue record

Date deposited: 04 Nov 2021 17:32
Last modified: 17 Mar 2024 06:53

Export record

Altmetrics

Contributors

Author: Christian Breite
Author: Arsen Melnikov
Author: Albert Turon
Author: Erich Schoberl
Author: Ian Sinclair
Author: Stepan V. Lomov
Author: A de Morais
Author: C. Le Bourlot
Author: E. Maire
Author: F Otero
Author: Neil McCartney
Author: Mark Spearing ORCID iD
Author: Soraia Pimenta
Author: Pedro P. Camanho
Author: Larissa Gorbatikh
Author: Wim van Paepagem
Author: Yentl Swolfs

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×