Identification of the local stiffness reduction of a damaged composite plate using the virtual fields method
In the present study, a damage detection problem is formulated as the identification of the spatial stiffness distribution in a damaged composite plate. Full-field heterogeneous curvature fields obtained from an optical deflectometry technique are processed by using the virtual fields method adapted to...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Science Direct
2007
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/6732/ http://irep.iium.edu.my/6732/ http://irep.iium.edu.my/6732/ http://irep.iium.edu.my/6732/1/SMK_P-1.pdf |
| Summary: | In the present study, a damage detection problem is formulated as the identification of the spatial stiffness distribution in a damaged
composite plate. Full-field heterogeneous curvature fields obtained from an optical deflectometry technique are processed by using the
virtual fields method adapted to retrieve the 2D stiffness distribution map of a damaged carbon-epoxy plate. 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. In this paper, the
procedure is described, validated on simulated measurements and some initial experimental results are given.
� 2007 Elsevier Ltd. All rights reserved. |
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