Damage Detection in Structures – Examples (CROSBI ID 675836)
Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Duvnjak, Ivan ; Damjanović, Domagoj ; Sabourova, Natalia ; Grip, Niklas ; Ohlsson, Ulf ; Elfgren, Lennart
engleski
Damage Detection in Structures – Examples
Damage assessment of structures includes estimation of location and severity of damage. Quite often it is done by using changes of dynamic properties, such as natural frequencies, mode shapes and damping ratios, determined on undamaged and damaged structures. The basic principle is to use dynamic properties of a structure as indicators of any change of its stiffness and/or mass. In this paper, two new methods for damage detection are presented and compared. The first method is based on comparison of normalised modal shape vectors determined before and after damage. The second method uses so-called 𝑙-norm regularized finite element model updating. Some important properties of these methods are demonstrated using simulations on a Kirchhoff plate. The pros and cons of the two methods are discussed. Unique aspects of the methods are highlighted.
mode shape damage detection, finite element model updating, l norm regularization.
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Podaci o prilogu
471-478.
2019.
objavljeno
Podaci o matičnoj publikaciji
IABSE Symposium 2019 Guimarães - Report
Santos, Luís Oliveira
Zürich: International Association for Bridge and Structural Engineering (IABSE)
978-3-85748-163-5
Podaci o skupu
IABSE SYMPOSIUM Towards a Resilient Built Environment (GUIMARÃES 2019)
predavanje
27.03.2019-29.03.2019
Guimarães, Portugal