Experimental investigation of high velocity oblique impact and residual tensile strength of carbon/epoxy laminates
File(s)
Accepted version
Author(s)
Kristnama, Ashwin R
Xu, Xiaodong
Nowell, David
Wisnom, Michael R
Hallett, Stephen R
Type
Journal Article
Abstract
Composite components are required to be resilient against Foreign Object Damage (FOD) induced by localised high velocity impact events. Here an experimental investigation into high velocity oblique impacts and residual tensile strength of thin quasi-isotropic carbon/epoxy laminates is reported. Oblique (45°) impacts between 100 m/s and 350 m/s were carried out using 3 mm steel cubes on the edge and the centre of the laminates, mounted as a cantilever beam. Impact induced damage was characterised using X-ray Computed Tomography (CT) and the residual strength of impacted laminates was determined through quasi-static tensile tests. The residual strength shows a strong dependence on the impact damage size, characterised in terms of fibre fracture width and delamination area. Machined notches were then investigated and compared to impacted laminates in terms of residual strength.
Date Issued
2019-09-29
Date Acceptance
2019-08-06
Citation
Composites Science and Technology, 2019, 182, pp.107772-107772
ISSN
0266-3538
Publisher
Elsevier BV
Start Page
107772
End Page
107772
Journal / Book Title
Composites Science and Technology
Volume
182
Copyright Statement
© 2019 Elsevier Ltd. All rights reserved. This manuscript is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licence http://creativecommons.org/licenses/by-nc-nd/4.0/
Identifier
https://www.sciencedirect.com/science/article/pii/S026635381930630X?via%3Dihub
Subjects
Materials
09 Engineering
Publication Status
Published online
Article Number
107772
Date Publish Online
2019-08-06