Browsing by Author "Ntotsios, E."
Now showing items 1-14 of 14
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Bayesian methodology for structural damage identification and reliability assessment
Papadimitriou, C.; Ntotsios, E. (2009)A Bayesian framework is presented for structural model selection and damage identification utilizing measured vibration data. The framework consists of a two-level approach. At the first level the problem of estimating the ... -
Bridge health monitoring system based on vibration measurements
Ntotsios, E.; Papadimitriou, C.; Panetsos, P.; Karaiskos, G.; Perros, K.; Perdikaris, P. (2009)A bridge health monitoring system is presented based on vibration measurements collected from a network of acceleration sensors. Sophisticated structural identification methods, combining information from the sensor network ... -
Fatigue predictions in entire body of metallic structures from a limited number of vibration sensors using Kalman filtering
Papadimitriou, C.; Fritzen, C. P.; Kraemer, P.; Ntotsios, E. (2011)A methodology is proposed for estimating damage accumulation due to fatigue in the entire body of a metallic structure using output-only vibration measurements from a sensor network installed at a limited number of structural ... -
Health monitoring of Metsovo bridge using ambient vibrations
Panetsos, P.; Ntotsios, E.; Papadimitriou, C.; Papadioti, D. C.; Dakoulas, P. (2010)A real-time online structural health monitoring system for the Metsovo bridge, the highest R/C bridge of the Egnatia Odos Motorway in Greece, is outlined and then used to develop high fidelity dynamic finite element models ... -
Multi-objective optimization algorithms for finite element model updating
Ntotsios, E.; Papadimitriou, C. (2008)A multi-objective optimization method is presented for estimating the parameters of finite element structural models based on modal residuals. The method results in multiple Pareto optimal structural models that are ... -
Optimal experimental design for structural health monitoring applications
Lam, H. F.; Papadimitriou, C.; Ntotsios, E. (2008)Successful structural health monitoring and condition assessment depends to a large extent on the sensor and actuator networks place on the structure as well as the excitation characteristics. An optimal experimental design ... -
Optimal sensor location methodology for structural identification and damage detection
Ntotsios, E.; Christodoulou, K.; Papadimitriou, C. (2006)Theoretical and computational issues arising in the selection of the optimal sensor configuration in structural dynamics are addressed. The information entropy is introduced to measure the performance of a sensor configuration. ... -
Optimization algorithms for system integration
Papadimitriou, C.; Ntotsios, E. (2008)This work outlines the optimization algorithms involved in integrating system analysis and measured data collected from a network of sensors. The integration is required for structural health monitoring problems arising ... -
Pareto optimal structural models and predictions consistent with data and modal residuals
Ntotsios, E.; Christodoulou, K.; Papadimitriou, C. (2008)A multi-objective identification method for model updating based on modal residuals is proposed. The method results in multiple Pareto optimal structural models that are consistent with the measured modal data, the class ... -
Structural damage identification using a Bayesian model selection framework
Papadimitriou, C.; Papadioti, D. C.; Ntotsios, E. (2010)A Bayesian model class selection and updating framework is used for identifying the location and size of damage in a structure utilizing measured dynamic data. The framework consists of a two-level approach. At the first ... -
Structural health monitoring of a ravine bridge of Egnatia Motorway during construction
Panetsos, P.; Ntotsios, E.; Papadimitriou, C. (2008)The instrumental rapid monitoring of the dynamic (ambient) response of a balanced cantilevered ravine bridge of Egnatia Motorway during its construction phases, when subjected to wind and other construction loads, was ... -
Structural identification of Egnatia Odos bridges based on ambient and earthquake induced vibrations
Ntotsios, E.; Karakostas, C.; Lekidis, V.; Panetsos, P.; Nikolaou, I.; Papadimitriou, C.; Salonikos, T. (2009)The dynamic characteristics of two representative R/C bridges on Egnatia Odos motorway in Greece are estimated based on low amplitude ambient and earthquake-induced vibrations. The present work outlines the instrumentation ... -
Structural model updating and prediction variability using Pareto optimal models
Christodoulou, K.; Ntotsios, E.; Papadimitriou, C.; Panetsos, P. (2008)A multi-objective identification method for structural model updating based on modal residuals is presented. The method results in multiple Pareto optimal structural models that are consistent with the experimentally ... -
Variability of updated finite element models and their predictions consistent with vibration measurements
Papadimitriou, C.; Ntotsios, E.; Giagopoulos, D.; Natsiavas, S. (2012)A case study on a small-scale laboratory vehicle frame is used to investigate the variability of the updated finite element (FE) models that arises from model and measurement errors and demonstrate the effect of this ...