Vol.5, No2, 2005, pp. 87-93
 UDC 620.1

DAMAGE DETECTION VIA DYNAMIC CHARATERISTICS DETERMINATION

Marina Trajković, Marina Mijalković 1

Dragoslav Šumarac 2

Dušan Krajčinović 3

1 Faculty of Civil Engineering and Architecture, University of Niš

2 Faculty of Civil Engineering,  University of Belgrade

3 Arizona State University, Tempe, Arizona, USA

Abstract

The change of dynamic parameters (stiffness, damping), as a consequence of structural history (erosion, friction, fatigue, internal damages and cracks), has an impact on decrease of reliability and serviceability of a structure or, drastically, causes its collapse. Having in mind that structural damage is small or embedded in the system, hence the detection cannot be done visually, one useful non-destructive procedure for damage determination by dynamic parameters evaluation - vibration monitoring of the structure.

Keywords: structural damage, dynamical characteristics, stiffness, subspace identification method, vibration monitoring

full article (597 kB)