Naslov
A new method for structural damage detection and localization based on modal shapes

Autori
Duvnjak, Ivan ; Rak, Mladenko ; Damjanović, Domagoj

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

Izvornik
The Fifth International Symposium on Life - Cycle Civil of Engineering Systems : Emphasis on Sustainable Civil Infrastructure . proceedings / Bakker, Jaap ; Frangopol, Dan M. ; Klass van Breugel - Delft : CRC Press ; A.A. Balkema Publishers, 2016, 224-231

ISBN
978-1-138-02847-0

Skup
International Symposium on Life - Cycle Civil Engineering (5 ; 2016)

Mjesto i datum
Delft, Nizozemska, 16.07.2016. - 19.07.2016

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Damage ; detection ; mode shapes ; severity ; dynamic properties ; numerical model

Sažetak
Damage assessment of structures includes estimation of location and severity of damage using changes of dynamic properties (natural frequencies, damping ratios and modal shapes) determined on undam-aged and damaged structure. 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, a new method for damage detection based only on mode shape data is presented to identify damage for plate like structures. A new method is based on comparison of normalised modal shape vectors determined in undamaged and damaged state of the structure. The validity of the proposed method is demonstrated on numerical model. Accuracy of the method is analysed on nine different damage scenarios simulated by local change of elasticity modulus and change in boundary conditions.

Izvorni jezik
Engleski

Znanstvena područja
Građevinarstvo

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