Local stiffness reduction in impacted composite plates from full-field measurements
Local stiffness reduction in impacted composite plates from full-field measurements
The virtual fields method (VFM) is used as an inverse procedure to process curvatures obtained from full-field measurements for the identification of the local loss of stiffness in composite plates. The VFM has been adapted to the case of a plate with stiffnesses varying spatially. Two parameterization methods for the stiffness reduction were developed: continuous (polynomial) and discrete (piecewise). In this study, the procedure is described, validated on simulated data and several experimental results are given. The method not only picks up the location of the damage but also provides a fairly good estimate of the stiffness reduction in the damaged area when the through-thickness displacement distribution in the damaged region is reasonably linear
optical properties/techniques, delamination, damage mechanics, non-destructive testing
1961-1974
Kim, J.-H.
11800855-201a-457b-97f7-a148bacc061c
Pierron, F.
a1fb4a70-6f34-4625-bc23-fcb6996b79b4
Wisnom, M.R.
687416aa-8839-400c-afa3-9fd083f20845
Avril, S.
6c8490e9-2ae9-41c3-9bf8-bfbb3836c097
December 2009
Kim, J.-H.
11800855-201a-457b-97f7-a148bacc061c
Pierron, F.
a1fb4a70-6f34-4625-bc23-fcb6996b79b4
Wisnom, M.R.
687416aa-8839-400c-afa3-9fd083f20845
Avril, S.
6c8490e9-2ae9-41c3-9bf8-bfbb3836c097
Kim, J.-H., Pierron, F., Wisnom, M.R. and Avril, S.
(2009)
Local stiffness reduction in impacted composite plates from full-field measurements.
Composites Part A: Applied Science and Manufacturing, 40 (12), .
(doi:10.1016/j.compositesa.2009.09.024).
Abstract
The virtual fields method (VFM) is used as an inverse procedure to process curvatures obtained from full-field measurements for the identification of the local loss of stiffness in composite plates. The VFM has been adapted to the case of a plate with stiffnesses varying spatially. Two parameterization methods for the stiffness reduction were developed: continuous (polynomial) and discrete (piecewise). In this study, the procedure is described, validated on simulated data and several experimental results are given. The method not only picks up the location of the damage but also provides a fairly good estimate of the stiffness reduction in the damaged area when the through-thickness displacement distribution in the damaged region is reasonably linear
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More information
e-pub ahead of print date: 13 October 2009
Published date: December 2009
Keywords:
optical properties/techniques, delamination, damage mechanics, non-destructive testing
Organisations:
Engineering Mats & Surface Engineerg Gp
Identifiers
Local EPrints ID: 210607
URI: http://eprints.soton.ac.uk/id/eprint/210607
ISSN: 1359-835X
PURE UUID: 934700a5-0a84-4522-85f0-4b09afbd052c
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Date deposited: 16 Feb 2012 11:12
Last modified: 15 Mar 2024 03:35
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Contributors
Author:
J.-H. Kim
Author:
M.R. Wisnom
Author:
S. Avril
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