Abstract:

Structural health monitoring methods aim to identify the system and therefore the damage in the system during the operation of the structure, the building is exposed to environmental vibrations. In this study, the mode description method which is valid for environmental vibrations is proposed. The mode description which aims to estimate the modal parameters according to the two or more different input force locations uses modal plots. The method used by modal plans in this study is a valid method for free vibrations. Thus, in this study a method that can be applied for both free vibrations and environmental vibrations is proposed which is novel to the literature. In general, the forces acting on the structure are not measured in ambient vibration analyzes. However, in this sudy, with the modal plot, estimation of the input force position under environmental vibrations without measuring the input forces is shown for the beam-like structures which is novel to the literature. For the system identification step to be performed with minimum error, the input force location must be close to the degree of freedom analyzed and the frequency of data sampling rate should be chosen according to the target frequency range.

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