This final thesis examines the possibility of detecting changes in the dynamic properties of structures under modulated rotational excitation using affordable measurement equipment. A cantilevered, purpose-built sheet metal test specimen was excited by a servomotor with an eccentric mass, and the response was measured using a MEMS accelerometer and an ESP32 microcontroller. The frequency response function was determined from the measurements, followed by a comparison of the responses of the undamaged and damaged test specimen. Following the caused damage, the amplitudes and frequencies of the resonance peaks changed. The results show that the approach under consideration is suitable for monitoring the condition of mechanical systems and for the early detection of changes in their dynamic properties.
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