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System identification approach application for evaluation of system properties degradation

Author(s): Trajković Marina | Bruhns Otto T. | Meyers Albert | Igić Tomislav | Mijalković Marina

Journal: Facta Universitatis - series : Architecture and Civil Engineering ISSN 0354-4605
Volume: 3; Issue: 1; Start page: 9; Date: 2004;
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ABSTRACT
In respect to the subspace identification method as one of the possible variants of inverse dynamic analyses, behavior of real structural systems with real load and real noise contaminated input/output data was investigated in this work. A useful and non-destructive dynamic parameters evaluation tool - vibration monitoring of the structure - is proposed. The report of original investigation on real models excited by an impulse load in laboratory is also presented. A special contribution is a software program for experiment monitoring and for determination of relevant mechanical characteristics as well as of the location of a possible structural damage.