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Smart Structures and Systems Volume 5, Number 3, May 2009 , pages 223-240 DOI: https://doi.org/10.12989/sss.2009.5.3.2232 |
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Health Monitoring System (HMS) for structural assessment |
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Jose Campos e Matos, Oscar Garcia, Antonio Abel Henriques1,
Joan Ramon Casas and Josep Vehi
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| Abstract | ||
| As in any engineering application, the problem of structural assessment should face the different uncertainties present in real world. The main source of uncertainty in Health Monitoring System (HMS) applications are those related to the sensor accuracy, the theoretical models and the variability in structural parameters and applied loads. In present work, two methodologies have been developed to deal with these uncertainties in order to adopt reliable decisions related to the presence of damage. A simple example, a steel beam analysis, is considered in order to establish a liable comparison between them. Also, such methodologies are used with a developed structural assessment algorithm that consists in a direct and consistent comparison between sensor data and numerical model results, both affected by uncertainty. Such algorithm is applied to a simple concrete laboratory beam, tested till rupture, to show it feasibility and operational process. From these applications several conclusions are derived with a high value, regarding the final objective of the work, which is the implementation of this algorithm within a HMS, developed and applied into a prototype structure. | ||
| Key Words | ||
| uncertainty; Modal Interval Analysis (MIA); perturbation method; structural assessment; Health Monitoring System (HMS) | ||
| Address | ||
| Jose Campos e Matos; University of Porto, Faculty of Engineering, Rua Dr. Roberto Frias s/n, Civil Engineering Department, 4200-465 Porto, Portugal Oscar Garcia; University of Girona, Campus Montilivi, Edificio P-IV, Automatic, Informatics and Electronic Department, 17071 Girona, Spain Antpnio Abel Henriques; University of Porto, Faculty of Engineering, Rua Dr. Roberto Frias s/n, Civil Engineering Department, 4200-465 Porto, Portugal Joan Ramon Casas; Technical University of Catalonia, School of Civil Engineering. C/Jordi Girona 1-3, Campus Norte, Edificio C1, 08034 Barcelona, Spain Josep Vehi; University of Girona, Campus Montilivi, Edificio P-IV, Automatic, Informatics and Electronic Department, 17071 Girona, Spain | ||