Naslov
Damage Detection in Structures – Examples

Autori
Duvnjak, Ivan ; Damjanović, Domagoj ; Sabourova, Natalia ; Grip, Niklas ; Ohlsson, Ulf ; Elfgren, Lennart

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
IABSE Symposium 2019 Guimarães - Report / Santos, Luís Oliveira - Zürich : International Association for Bridge and Structural Engineering (IABSE), 2019, 471-478

ISBN
978-3-85748-163-5

Skup
IABSE SYMPOSIUM Towards a Resilient Built Environment (GUIMARÃES 2019)

Mjesto i datum
Guimarães, Portugal, 27.03.2019. - 29.03.2019

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
mode shape damage detection, finite element model updating, l norm regularization.

Sažetak
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.

Izvorni jezik
Engleski

Znanstvena područja
Građevinarstvo

POVEZANOST RADA