High-resolution computed tomography in resin infused woven carbon fibre composites with voids
High-resolution computed tomography in resin infused woven carbon fibre composites with voids
Tomographic imaging using both microfocus radiation and synchrotron radiation was performed to assess the void defects in resin transfer moulded woven carbon fibre composites. The focus of this study is on characterising the void homology (e.g. local void size and spatial distribution) in relation to weave orientation, infusion direction and potential effects on damage formation in tensile loading. As the orientation angle between the fibre direction of unidirectional layer in the laminate and the direction of the global resin flow increases, from parallel to perpendicular, larger voids and a greater volume fraction of voids were observed, which led to increased damage formation upon loading. Significant accumulation of voids around both the layer interfaces and yarn fibres were also observed. With regard to yarn design, it is recommended to balance the benefits (e.g. fabric handling, structural integrity of preform) and drawbacks (e.g. lower fibre content, more voids) of the supporting yarn. Also, sensible placement of resin inlets and outlets could reduce the amount of deleterious voids, i.e. by promoting resin flow along the fibre direction in the most defect-sensitive off-axis layers.
textile composites, defects, porosity/voids, resin transfer moulding (rtm, X-ray computed tomography (ct)
12-21
Sisodia, S.M.
237a7612-972b-4aa5-a8fb-deaa8ee9baac
Garcea, S.C.
835ab8bc-a234-4fbd-83e3-4f4fe9ca22bf
George, A.R.
d6270e0b-9a72-4ffc-8c2f-6843cdbbbf18
Fulwood, D.T.
1b616968-f043-4cf9-ace4-167e741978d0
Spearing, S.M.
9e56a7b3-e0e8-47b1-a6b4-db676ed3c17a
Gamstedt, E.K.
9801f69e-30d0-4570-a751-edb5514545e6
2 August 2016
Sisodia, S.M.
237a7612-972b-4aa5-a8fb-deaa8ee9baac
Garcea, S.C.
835ab8bc-a234-4fbd-83e3-4f4fe9ca22bf
George, A.R.
d6270e0b-9a72-4ffc-8c2f-6843cdbbbf18
Fulwood, D.T.
1b616968-f043-4cf9-ace4-167e741978d0
Spearing, S.M.
9e56a7b3-e0e8-47b1-a6b4-db676ed3c17a
Gamstedt, E.K.
9801f69e-30d0-4570-a751-edb5514545e6
Sisodia, S.M., Garcea, S.C., George, A.R., Fulwood, D.T., Spearing, S.M. and Gamstedt, E.K.
(2016)
High-resolution computed tomography in resin infused woven carbon fibre composites with voids.
Composites Science and Technology, 131, .
(doi:10.1016/j.compscitech.2016.05.010).
Abstract
Tomographic imaging using both microfocus radiation and synchrotron radiation was performed to assess the void defects in resin transfer moulded woven carbon fibre composites. The focus of this study is on characterising the void homology (e.g. local void size and spatial distribution) in relation to weave orientation, infusion direction and potential effects on damage formation in tensile loading. As the orientation angle between the fibre direction of unidirectional layer in the laminate and the direction of the global resin flow increases, from parallel to perpendicular, larger voids and a greater volume fraction of voids were observed, which led to increased damage formation upon loading. Significant accumulation of voids around both the layer interfaces and yarn fibres were also observed. With regard to yarn design, it is recommended to balance the benefits (e.g. fabric handling, structural integrity of preform) and drawbacks (e.g. lower fibre content, more voids) of the supporting yarn. Also, sensible placement of resin inlets and outlets could reduce the amount of deleterious voids, i.e. by promoting resin flow along the fibre direction in the most defect-sensitive off-axis layers.
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Accepted/In Press date: 20 May 2016
e-pub ahead of print date: 24 May 2016
Published date: 2 August 2016
Keywords:
textile composites, defects, porosity/voids, resin transfer moulding (rtm, X-ray computed tomography (ct)
Organisations:
Engineering Mats & Surface Engineerg Gp
Identifiers
Local EPrints ID: 395216
URI: http://eprints.soton.ac.uk/id/eprint/395216
ISSN: 0266-3538
PURE UUID: 99b0bff2-50ef-48e2-9223-ac14d0ddfce6
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Date deposited: 26 May 2016 08:36
Last modified: 15 Mar 2024 05:36
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Contributors
Author:
S.M. Sisodia
Author:
S.C. Garcea
Author:
A.R. George
Author:
D.T. Fulwood
Author:
E.K. Gamstedt
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