Assessment of a Model-Update Method for Damage Characterization of Critical Structures

Paulo J. Antunes 1 Ismael Vaz 2 Rui J. Guimaraes 1 Nelson J. Ferreira 1 Júlio C. Viana 1 Gustavo R. Dias 1
1 Critical Materials S.A. [Guimarães]
2 Universidade do Minho
Abstract : A damage characterization approach is developed adopting a model-update method. A derivative-free global optimization based on the Particle Swarm method was adopted, combining data computed from a FEM model and experimental signals retrieved from accelerometers in order to estimate degradation of the materialÇs properties. The method is able of simultaneously locating, determining the type of damage (changes on the stiffness, mass, damping) and outputting its severity (size and variation in material properties) using a vibrational approach. The procedure is fully automated (using pre/post-processing operations, scripting capabilities, data exchange) and implemented into PRODDIA¬ - Structural Systems Health Management platform. The proposed approach results in a closed loop optimization process driven by an objective function that considers appropriate damage metrics. The damage assessment capability is validated in a sensorised CFRP plate, 1x1 m and 3 mm thick, with two Z-shape stringers. A data acquisition system with low number of sensors (4 accelerometers, 1 temperature sensor) is deployed. Several experimental signals are obtained by simulating damage through the placement of a mass at 25 different locations on the plate. Different damages metrics are also evaluated. The proposed approach is able of characterizing damage in complex composite plates at different locations.
Keywords : Finite Elements based SHM Monitoring Damage assessment
Type de document :
Communication dans un congrès
Le Cam, Vincent and Mevel, Laurent and Schoefs, Franck. EWSHM - 7th European Workshop on Structural Health Monitoring, Jul 2014, Nantes, France. 2014
Liste complète des métadonnées

Littérature citée [10 références]  Voir  Masquer  Télécharger
https://hal.inria.fr/hal-01021227
Contributeur : Anne Jaigu <>
Soumis le : mercredi 9 juillet 2014 - 10:24:10
Dernière modification le : mercredi 9 juillet 2014 - 15:27:05
Document(s) archivé(s) le : jeudi 9 octobre 2014 - 11:27:14

Fichier

0467.pdf
Fichiers produits par l'(les) auteur(s)

Identifiants

  • HAL Id : hal-01021227, version 1

Collections

INSMI | EWSHM2014 | EWSHM-WEAT5

Citation

Paulo J. Antunes, Ismael Vaz, Rui J. Guimaraes, Nelson J. Ferreira, Júlio C. Viana, et al.. Assessment of a Model-Update Method for Damage Characterization of Critical Structures. Le Cam, Vincent and Mevel, Laurent and Schoefs, Franck. EWSHM - 7th European Workshop on Structural Health Monitoring, Jul 2014, Nantes, France. 2014. 〈hal-01021227〉

Exporter

BibTeX TEI DC DCterms EndNote

Partager

Métriques

Consultations de la notice

211

Téléchargements de fichiers

314

Contact


archive-ouverte@inria.fr