PSI - Issue 78

Antonio Sánchez López-Cuervo et al. / Procedia Structural Integrity 78 (2026) 1791–1798

1798

4. Conclusions

This paper presents the main results of the dynamic monitoring of a laboratory-scale steel frame using a multi sensor system composed of accelerometers and strain gauges. Firstly, the e ff ect of damage on the modal parameters identified by both sensing systems was analysed. The results highlight the value of combining data from di ff erent sensor types to reduce the uncertainty associated with the sensors themselves and the modal identification techniques. Secondly, the modal data obtained in the undamaged scenario were used to update a finite element model. A multi objective optimization approach was formulated to jointly consider the measurements from both sensor systems, resulting in a set of optimal solutions defined by the Pareto front. The calibrated model shows strong agreement with the experimental modal data, validating the proposed methodology. Future work will focus on using the modal parameters identified in the various damage scenarios to localize the a ff ected joints, starting from the calibrated finite element model.

Acknowledgements

Antonio S. Lo´pez-Cuervo is supported by a FPU contract-fellowship from the Spanish Ministry of Universities Ref: FPU22 / 03667. The authors would like to acknowledge the financial support provided by the Spanish Ministry of Science and Inno vation under the research project SMART-BRIDGES [PLEC2021-007798] funded by the FEDER NextGenerationEU recovery plan.

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