Online Damage Detection in Structural Systems

Saeed Eftekhar Azam

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This monograph assesses in depth the application of recursive Bayesian filters in structural health monitoring. Although the metho...

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Beschreibung

This monograph assesses in depth the application of recursive Bayesian filters in structural health monitoring. Although the methods and algorithms used here are well established in the field of automatic control, their application in the realm of civil engineering has to date been limited. The monograph is therefore intended as a reference for structural and civil engineers who wish to conduct research in this field. To this end, the main notions underlying the families of Kalman and particle filters are scrutinized through explanations within the text and numerous numerical examples. The main limitations to their application in monitoring of high-rise buildings are discussed and a remedy based on a synergy of reduced order modeling (based on proper orthogonal decomposition) and Bayesian estimation is proposed. The performance and effectiveness of the proposed algorithm is demonstrated via pseudo-experimental evaluations.
Focuses on the development of fast and robust algorithms for online damage detection in structural systems Compares the performances of Kalman, particle and hybrid filters using numerical examples Assesses a method based on proper orthogonal decomposition in terms of speed-up and accuracy of estimations Will aid structural and civil engineers wishing to conduct research in structural health monitoring Includes supplementary material: sn.pub/extras
Inhalt
Introduction.- Recursive Bayesian estimation of partially observed dynamic systems.- Model Order Reduction of dynamic systems via Proper Orthogonal Decomposition.- POD-Kalman observer for linear time invariant dynamic systems.- Dual estimation and reduced order modeling of damaging structures.- Summary of the recursive Bayesian inference schemes.