A method and device for detection of a pulsed mechanical effect on a plant component
includes continuously recording an operating noise in the plant component with
a sensor disposed on the plant component and converting the recorded noise into
a measured signal with the sensor. Then, the measured signal is subjected to a
Fourier transformation. An evaluation function is derived from a number of value
spectra determined in the above manner, which gives the onset of a pulsed mechanical
effect on the plant component.
