Abstract
The idea of using the changes of the characteristics of natural or forced vibrations (natural frequency, natural modes, damping) for the determination of the position and magnitude of damage to building structures originated in the 70s [1]. The achievement of ever higher accuracy of developing dynamic displacement sensors and evaluation instruments has made this idea increasingly applicable. Identification is a process defining the properties of a structure and the characteristics of its design model. The often required identification task of determining the rate of deterioration of structures by means of their dynamic response has been numerous lately. The paper sums up the experience of the Institute of Theoretical and Applied Mechanics (ITAM) of the Czech Academy of Sciences, with laboratory tests of large models and in-situ measurements.
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