CUED Publications database

Automated modal identification and tracking: Application to an iron arch bridge

Cabboi, A and Magalhães, F and Gentile, C and Cunha, Á (2017) Automated modal identification and tracking: Application to an iron arch bridge. Structural Control and Health Monitoring, 24. ISSN 1545-2255

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Challenges concerning the automation of modal identification and tracking procedures in permanent monitoring systems for Structural Health Monitoring purposes are discussed. In this context, an automated procedure based on parametric identification methods that involve the interpretation of stabilization diagrams is proposed. The methodology comprehends two key points: (i) automatic analysis of stabilization diagrams, performed through a first check of reasonable damping ratio, a subsequent modal complexity check and a final clustering of structural modes; (ii) automated tracking of the evolution in time of the identified modal properties. The proposed modal clustering and tracking steps exploit the introduction of self-adaptable dynamic thresholds, that do not require any a priori manual tuning for the different recorded data set. Finally, the proposed approach was successfully validated using real data collected on a historic iron arch bridge. Copyright © 2016 John Wiley & Sons, Ltd.

Item Type: Article
Divisions: Div C > Applied Mechanics
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 19:40
Last Modified: 08 Apr 2021 07:20
DOI: 10.1002/stc.1854