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A novel particle-filled Carbon-Fibre Reinforced Polymer model composite tailored for the application of Digital Volume Correlation and Computed Tomography

A novel particle-filled Carbon-Fibre Reinforced Polymer model composite tailored for the application of Digital Volume Correlation and Computed Tomography
A novel particle-filled Carbon-Fibre Reinforced Polymer model composite tailored for the application of Digital Volume Correlation and Computed Tomography
This paper presents the development of novel Carbon-Fibre Reinforced Polymer (CFRP) laminates, tailored for the application of Digital Volume Correlation (DVC) and Computed Tomography (CT) to experimental mechanics analyses of these materials. Analogous to surface-based Digital Image Correlation (DIC), DVC is a relatively novel volumetric method that utilizes CT data to quantify internal three-dimensional (3D) displacements and implicit strain fields. The highly anisotropic and somewhat regular/self-similar microstructures found in well-aligned unidirectional (UD) materials at high fibre volume fractions are intrinsically challenging for DVC, especially along the fibre direction at microstructural length-scales on the order of a few fibre diameters. To permit the application of DVC to displacement and/or strain measurements parallel to the fibre orientation, the matrix was doped with a sparse population of sub-micrometre particles to act as displacement trackers (i.e. fiducial markers). Barium titanate particles (400 nm, ∼1.44 vol. %) were found to offer the most favourable compromise between contrast in CT images and the ability to obtain a homogeneous distribution in 3D space with sufficient particle compactness for local DVC analyses. This property combination was selected following an extensive Micro-focus Computed Tomography (µCT)-based qualitative assessment on a wide test matrix, that included 38 materials manufactured with a range of possible particle compositions, mean sizes and concentrations. By comparing the tensile behaviour of the particle-adapted material alongside its particle-free counterpart, we demonstrate through the application of in situ Synchrotron Radiation Computed Tomography (SRCT) that the macro- and micromechanical responses of the newly developed CFRP are consistent with standard production materials indicating its suitability as a model system for mechanistic investigations.
Carbon-Fibre Reinforced Polymers (CFRPs), Particles, Microstructures, Micromechanics, Micro-focus Computed Tomography (μCT), Synchrotron Radiation Computed Tomography (SRCT), Digital Volume Correlation (DVC), Strain mapping
0021-9886
Schoberl, Erich
eccd55e0-c7fa-4903-8e20-d9dd52c3454a
Breite, C.
ffafe786-b374-4ab5-9859-d547d17bfd8f
Rosini, Sebastian
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Swolfs, Y.
d346a5b6-6d57-4e5e-b8e1-1b02a73d00eb
Mavrogordato, Mark
faedf03d-e357-4ec3-818e-e5ff5368fdf0
Sinclair, Ian
6005f6c1-f478-434e-a52d-d310c18ade0d
Spearing, Mark
9e56a7b3-e0e8-47b1-a6b4-db676ed3c17a
Schoberl, Erich
eccd55e0-c7fa-4903-8e20-d9dd52c3454a
Breite, C.
ffafe786-b374-4ab5-9859-d547d17bfd8f
Rosini, Sebastian
5ee1c836-a1a6-47fd-84c1-7386ec72e334
Swolfs, Y.
d346a5b6-6d57-4e5e-b8e1-1b02a73d00eb
Mavrogordato, Mark
faedf03d-e357-4ec3-818e-e5ff5368fdf0
Sinclair, Ian
6005f6c1-f478-434e-a52d-d310c18ade0d
Spearing, Mark
9e56a7b3-e0e8-47b1-a6b4-db676ed3c17a

Schoberl, Erich, Breite, C., Rosini, Sebastian, Swolfs, Y., Mavrogordato, Mark, Sinclair, Ian and Spearing, Mark (2020) A novel particle-filled Carbon-Fibre Reinforced Polymer model composite tailored for the application of Digital Volume Correlation and Computed Tomography. JCMS: Journal of Common Market Studies. (doi:10.1177/0021998320966388).

Record type: Article

Abstract

This paper presents the development of novel Carbon-Fibre Reinforced Polymer (CFRP) laminates, tailored for the application of Digital Volume Correlation (DVC) and Computed Tomography (CT) to experimental mechanics analyses of these materials. Analogous to surface-based Digital Image Correlation (DIC), DVC is a relatively novel volumetric method that utilizes CT data to quantify internal three-dimensional (3D) displacements and implicit strain fields. The highly anisotropic and somewhat regular/self-similar microstructures found in well-aligned unidirectional (UD) materials at high fibre volume fractions are intrinsically challenging for DVC, especially along the fibre direction at microstructural length-scales on the order of a few fibre diameters. To permit the application of DVC to displacement and/or strain measurements parallel to the fibre orientation, the matrix was doped with a sparse population of sub-micrometre particles to act as displacement trackers (i.e. fiducial markers). Barium titanate particles (400 nm, ∼1.44 vol. %) were found to offer the most favourable compromise between contrast in CT images and the ability to obtain a homogeneous distribution in 3D space with sufficient particle compactness for local DVC analyses. This property combination was selected following an extensive Micro-focus Computed Tomography (µCT)-based qualitative assessment on a wide test matrix, that included 38 materials manufactured with a range of possible particle compositions, mean sizes and concentrations. By comparing the tensile behaviour of the particle-adapted material alongside its particle-free counterpart, we demonstrate through the application of in situ Synchrotron Radiation Computed Tomography (SRCT) that the macro- and micromechanical responses of the newly developed CFRP are consistent with standard production materials indicating its suitability as a model system for mechanistic investigations.

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Effect of particles paper_submitted_JCM_review_less_refs_soton_rep - Accepted Manuscript
Restricted to Repository staff only until 16 December 2022.
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More information

Accepted/In Press date: 28 October 2020
e-pub ahead of print date: 16 December 2020
Keywords: Carbon-Fibre Reinforced Polymers (CFRPs), Particles, Microstructures, Micromechanics, Micro-focus Computed Tomography (μCT), Synchrotron Radiation Computed Tomography (SRCT), Digital Volume Correlation (DVC), Strain mapping

Identifiers

Local EPrints ID: 446200
URI: http://eprints.soton.ac.uk/id/eprint/446200
ISSN: 0021-9886
PURE UUID: 1dbb4870-ee3c-4eb7-bbba-e4c636ea2ab3
ORCID for Mark Spearing: ORCID iD orcid.org/0000-0002-3059-2014

Catalogue record

Date deposited: 28 Jan 2021 17:30
Last modified: 18 Feb 2021 17:02

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