Preliminary communication

Identification of structural damages using modal data

Hrvoje Krstić orcid.org/0000-0001-5118-4186 ; Civil Engineering Faculty in Osijek, Josip Juraj Strossmayer University in Osijek, Croatia
Vladimir Sigmund ; Civil Engineering Faculty in Osijek, Josip Juraj Strossmayer University in Osijek, Croatia

Abstract

The dynamic characteristics of the structure (natural frequencies, forms and damping) contain data about its structural state. Changes in one of them indicate the change of the structural state (damage). As actual damage is usually hard to visualize and locate the experimental modal analysis presents a useful tool as being fast, reliable and non-destructive. Based on the changes in dynamic characteristics between two measurements it is possible to draw the conclusion about the structural state. Qualitative location of damage is relatively easy to obtain, while the quantitative extent of damage is much harder to determine. The applicable methodology for the qualitative and quantitative extent of damage has been outlined and explained on a practical example in this paper.

Keywords

dynamical test; structural state; localization and extent of damage

Hrčak ID:

23464

URI

https://hrcak.srce.hr/23464

Publication date:

24.4.2008.

Article data in other languages: croatian

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