2023 • In Noh, Hae Young (Ed.) Dynamics of Civil Structures, Volume 2 - Proceedings of the 41st IMAC, A Conference and Exposition on Structural Dynamics 2023
Ageing; Damage localization; Detection change; Finite-element updating; Health monitoring; Finite element modelling (FEM); Finite element updating; First passage time; Localisation; Pre-stressed steel; Steel strip; Structural damages; Time maps; Engineering (all); Computational Mechanics; Mechanical Engineering
Abstract :
[en] First passage time (FPT) maps and histograms of FPT are known to be capable of detecting slight deliberately operated structural changes in a steel strip. In this chapter, the question of the localization of the damage is tackled. It is studied by comparing the predictions of a 2-D updated finite-element model and the observed experimental results. We numerically simulated various damage scenarios by modifying the damage location until a good match of FPT histograms was found with the experimental investigations of virtually damaged structures. The detection and localization process was proven to be successful, and we attribute it to the large sensitivity of the FPT maps and histograms to slight changes in the model.
Disciplines :
Civil engineering
Author, co-author :
Theunissen, Kevin ; Université de Liège - ULiège > Urban and Environmental Engineering ; F.R.S.-FNRS, National Fund for Scientific Research, Bruxelles, Belgium
Verstraelen, Edouard; V2i S.A., Angleur, Belgium
Golinval, Jean-Claude ; Université de Liège - ULiège > Département d'aérospatiale et mécanique
Denoël, Vincent ; Université de Liège - ULiège > Département ArGEnCo > Analyse sous actions aléatoires en génie civil
Language :
English
Title :
Localization of Structural Damage Based on First Passage Times for a Pre-stressed Steel Strip
Publication date :
06 October 2023
Event name :
IMAC-XLI
Event place :
Austin, Usa
Event date :
13-02-2023 => 16-02-2023
Audience :
International
Main work title :
Dynamics of Civil Structures, Volume 2 - Proceedings of the 41st IMAC, A Conference and Exposition on Structural Dynamics 2023
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