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Structural health monitoring for flexible bridge structures using correlation and sensitivity of modal data
- Source :
- Computers & Structures. 85:117-130
- Publication Year :
- 2007
- Publisher :
- Elsevier BV, 2007.
-
Abstract
- This study investigates the use of correlation-based damage detection methods for long-span, cable-stayed bridges. The proposed approach is based on the multiple damage location assurance criterion (MDLAC), which combines a correlation-based technique with a forward-type estimation of damage-sensitive structural parameters. Observing the level of correlation between the variations in the measured and analytically synthesized natural frequencies enables damage localization. The sensitivity matrix, developed from the finite element model, further accommodates multiple damage detection. The locations of damage are determined by iteratively searching for the combination of structural parameters that maximizes the correlation coefficient through the application of genetic algorithms. It is demonstrated that correlation-based modal analysis is successful for damage detection and localization using a numerical model of a full-scale cable-stayed bridge.
- Subjects :
- Engineering
Correlation coefficient
business.industry
Mechanical Engineering
Modal analysis
Natural frequency
Structural engineering
Finite element method
Computer Science Applications
Matrix (mathematics)
Modeling and Simulation
Genetic algorithm
General Materials Science
Structural health monitoring
Sensitivity (control systems)
business
Algorithm
Civil and Structural Engineering
Subjects
Details
- ISSN :
- 00457949
- Volume :
- 85
- Database :
- OpenAIRE
- Journal :
- Computers & Structures
- Accession number :
- edsair.doi...........29c79a892a22dcbbbcef6cfa4ae1598c
- Full Text :
- https://doi.org/10.1016/j.compstruc.2006.09.005