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Start Over Author "Quqa, Said" Topic operational modal analysis
22 results on '"Quqa, Said"'

1. Damage Detection in Nonlinear Elastic Structures Using Individual Sensors.

Author

Quqa, Said and Landi, Luca

Subjects
STRUCTURAL health monitoring, CONCRETE construction, REINFORCED concrete, DETECTORS, NONLINEAR systems, STATISTICAL models
Abstract

Natural frequencies have always been one of the most intuitive and widely used features for damage identification in civil structures. Even with the recent rapid technological and theoretical developments, frequency-based identification methods are of great interest for applications through low-cost sensing systems. Although most techniques for frequency identification assume a linear structural behavior, in real applications, variations in the amplitude of input excitation can lead to short-term frequency fluctuations due to the inherent nonlinearities of civil structures. This paper proposes a procedure for damage detection in nonlinear systems based on instantaneous resonant frequency and amplitude estimates. A statistical model was fitted to identified data, and a synthetic indicator was proposed to obtain robust damage detection, even when frequency shifts due to variations in the input excitation are comparable to those due to actual damage. The proposed method was applied to a dataset recorded from a reinforced concrete building with strongly nonlinear behavior. [ABSTRACT FROM AUTHOR]

Published
2023
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2. FE Model Updating of Cable-Stayed Bridges Based on the Experimental Estimate of Cable Forces and Modal Parameters

Author

Rosso, Marco Martino, Aloisio, Angelo, Pasca, Dag Pasquale, Marano, Giuseppe C., Briseghella, Bruno, di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Limongelli, Maria Pina, editor, Giordano, Pier Francesco, editor, Quqa, Said, editor, Gentile, Carmelo, editor, and Cigada, Alfredo, editor

Published
2023
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3. Model Order Selection for Uncertainty Quantification in Subspace-Based OMA of Vestas V27 Blade

Author

Greś, S., Döhler, M., di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Limongelli, Maria Pina, editor, Giordano, Pier Francesco, editor, Quqa, Said, editor, Gentile, Carmelo, editor, and Cigada, Alfredo, editor

Published
2023
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4. Efficient Subspace-Based Operational Modal Analysis Using Video-Based Vibration Measurements

Author

Luo, Zhilei, Merainani, Boualem, Döhler, Michael, Baltazart, Vincent, Zhang, Qinghua, di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Limongelli, Maria Pina, editor, Giordano, Pier Francesco, editor, Quqa, Said, editor, Gentile, Carmelo, editor, and Cigada, Alfredo, editor

Published
2023
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5. Thermal Effects on Bridges Dynamic Behaviour

Author

Darò, P., De Cicco, B., La Mazza, D., Longo, M., Chiariotti, P., Manzoni, Stefano, Cigada, Alfredo, Mancini, G., di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Limongelli, Maria Pina, editor, Giordano, Pier Francesco, editor, Quqa, Said, editor, Gentile, Carmelo, editor, and Cigada, Alfredo, editor

Published
2023
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6. Monitoring the Vibration Response of the School of Engineering Main Building at University of Naples 'Federico II' to an 'Earthquake of Joy'

Author

Notarangelo, Matilde A., Gargaro, Danilo, Sandoli, Antonio, Fabbrocino, Giovanni, Prota, Andrea, Cosenza, Edoardo, Manfredi, Gaetano, Rainieri, Carlo, di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Limongelli, Maria Pina, editor, Giordano, Pier Francesco, editor, Quqa, Said, editor, Gentile, Carmelo, editor, and Cigada, Alfredo, editor

Published
2023
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7. 'Use of Ground-Based Interferometric Radars (GB-inRa) for Remote Real-Time Monitoring of Critical Infrastructures'

Author

Pettinari, A., Telleschi, G., Twardzik, M., di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Limongelli, Maria Pina, editor, Giordano, Pier Francesco, editor, Quqa, Said, editor, Gentile, Carmelo, editor, and Cigada, Alfredo, editor

Published
2023
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8. A Robust and Automatic Algorithm for Structural Mode Tracking of Bridges Subjected to Operational Changes

Author

Dederichs, Anno Christian, Øiseth, Ole, Petersen, Øyvind Wiig, di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Limongelli, Maria Pina, editor, Giordano, Pier Francesco, editor, Quqa, Said, editor, Gentile, Carmelo, editor, and Cigada, Alfredo, editor

Published
2023
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9. Dynamic Characterization for the Structural Integrity Assessment of a XIII Century Church with Temporary Provisional Structures

Author

Fiorini, Noemi, Acerbis, Roberto, Raschillà, Antonio, di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Limongelli, Maria Pina, editor, Giordano, Pier Francesco, editor, Quqa, Said, editor, Gentile, Carmelo, editor, and Cigada, Alfredo, editor

Published
2023
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10. Monitoring the Modal Parameters of a Historical Belfry in Earthquake Prone Region

Author

Rainieri, Carlo, Cieri, Luigi, Fabbrocino, Giovanni, di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Limongelli, Maria Pina, editor, Giordano, Pier Francesco, editor, Quqa, Said, editor, Gentile, Carmelo, editor, and Cigada, Alfredo, editor

Published
2023
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11. Dynamic Identification and Automatic Updating of the Numerical Model of a Masonry Tower

Author

Salachoris, Georgios Panagiotis, Standoli, Gianluca, Schiavoni, Mattia, Clementi, Francesco, di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Limongelli, Maria Pina, editor, Giordano, Pier Francesco, editor, Quqa, Said, editor, Gentile, Carmelo, editor, and Cigada, Alfredo, editor

Published
2023
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12. System Identification of a Six-Story Lightweight Timber Frame Building Using Ambient Vibration Measurements at Different Environmental Conditions

Author

Amaddeo, Carmen, Dorn, Michael, di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Limongelli, Maria Pina, editor, Giordano, Pier Francesco, editor, Quqa, Said, editor, Gentile, Carmelo, editor, and Cigada, Alfredo, editor

Published
2023
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13. Dynamic Monitoring Plant Integrated with a Weight in Motion Apparatus Aimed at Having a More Complete SHM System

Author

Sforza, Giorgio, Skobir, Matjaž, Ginesi, Francesco, Hauptman, Martin, di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Limongelli, Maria Pina, editor, Giordano, Pier Francesco, editor, Quqa, Said, editor, Gentile, Carmelo, editor, and Cigada, Alfredo, editor

Published
2023
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14. Validation of an Automated Approach for the Definition of Reference Modal Properties on Onshore Wind Turbines

Author

Pereira, Sérgio, Pacheco, João, Pimenta, Francisco, Moutinho, Carlos, Cunha, Álvaro, Magalhães, Filipe, di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Limongelli, Maria Pina, editor, Giordano, Pier Francesco, editor, Quqa, Said, editor, Gentile, Carmelo, editor, and Cigada, Alfredo, editor

Published
2023
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15. Vibration-Based Monitoring of a 5-Story Cross-Laminated Timber (CLT) Building Prototype

Author

Opazo-Vega, Alexander, Benedetti, Franco, Jara-Cisterna, Alan, di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Limongelli, Maria Pina, editor, Giordano, Pier Francesco, editor, Quqa, Said, editor, Gentile, Carmelo, editor, and Cigada, Alfredo, editor

Published
2023
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16. Ambient Vibration Data-Based Modal Parameter Estimation and Numerical Model Calibration of an Arch Dam

Author

Guo, Xiangfeng, Dufour, Frédéric, Humbert, Nicolas, di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Limongelli, Maria Pina, editor, Giordano, Pier Francesco, editor, Quqa, Said, editor, Gentile, Carmelo, editor, and Cigada, Alfredo, editor

Published
2023
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17. Operational Modal Analysis as a Tool for Bridge Model Updating. Application to an Unconventional Case Study

Author

Celati, Simone, Castellani, Matteo, Cavalagli, Nicola, Mazzatura, Isabella, Meoni, Andrea, Messina, Vincenzo, Natali, Agnese, Ubertini, Filippo, Salvatore, Walter, di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Limongelli, Maria Pina, editor, Giordano, Pier Francesco, editor, Quqa, Said, editor, Gentile, Carmelo, editor, and Cigada, Alfredo, editor

Published
2023
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18. Vibration-Based Monitoring for Non-destructive Testing of Post-tensioning External Tendons

Author

García-Palacios, Jaime H., Díaz, Iván M., Naranjo-Pérez, Javier, Renedo, Carlos M. C., di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Limongelli, Maria Pina, editor, Giordano, Pier Francesco, editor, Quqa, Said, editor, Gentile, Carmelo, editor, and Cigada, Alfredo, editor

Published
2023
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19. Effect of Changing Environment on the Dynamic Characteristics of an Overpass

Author

Gentile, Carmelo, Pirrò, Marco, Busatta, Fulvio, di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Limongelli, Maria Pina, editor, Giordano, Pier Francesco, editor, Quqa, Said, editor, Gentile, Carmelo, editor, and Cigada, Alfredo, editor

Published
2023
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20. First Results from Operational Modal Analysis of a Floating Offshore Wind Turbine

Author

Pimenta, Francisco, Magalhães, Filipe, di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Limongelli, Maria Pina, editor, Giordano, Pier Francesco, editor, Quqa, Said, editor, Gentile, Carmelo, editor, and Cigada, Alfredo, editor

Published
2023
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21. Tension Force Estimation of Post-tensioning External Tendons Through Vibration-Based Monitoring: Experimental Validation

Author

Naranjo-Pérez, Javier, Vecino-Muñoz, Belén, Díaz, Iván M., Renedo, Carlos M. C., García-Palacios, Jaime H., di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Limongelli, Maria Pina, editor, Giordano, Pier Francesco, editor, Quqa, Said, editor, Gentile, Carmelo, editor, and Cigada, Alfredo, editor

Published
2023
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22. Damage Detection in Nonlinear Elastic Structures Using Individual Sensors

Author

Said Quqa, LUCA LANDI, Quqa, Said, and Landi, Luca

Subjects
operational modal analysis, non-stationarity, Architecture, smart sensor, nonlinearity, Building and Construction, Civil and Structural Engineering, damage identification
Abstract

Natural frequencies have always been one of the most intuitive and widely used features for damage identification in civil structures. Even with the recent rapid technological and theoretical developments, frequency-based identification methods are of great interest for applications through low-cost sensing systems. Although most techniques for frequency identification assume a linear structural behavior, in real applications, variations in the amplitude of input excitation can lead to short-term frequency fluctuations due to the inherent nonlinearities of civil structures. This paper proposes a procedure for damage detection in nonlinear systems based on instantaneous resonant frequency and amplitude estimates. A statistical model was fitted to identified data, and a synthetic indicator was proposed to obtain robust damage detection, even when frequency shifts due to variations in the input excitation are comparable to those due to actual damage. The proposed method was applied to a dataset recorded from a reinforced concrete building with strongly nonlinear behavior.

Published
2023

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