FIELD: machine engineering.
SUBSTANCE: sound pressure sensors use a series of technical microphones with a narrow beam pattern installed in the specified sector of the test piece. In addition, the point values of the sound pressure value and the frequency spectrum of each of the microphones are separately extracted, a spectral amplitude-phase image is constructed from the frequency spectrum of a number of technical microphones, and by visualizing the distribution of the vibration amplitudes for each of the allocated frequencies by surface parts.
EFFECT: invention makes it possible to increase the reliability of the result when performing the amplitude determination, and makes it possible to qualitatively evaluate the vibration patterns of the structural elements.
4 cl, 8 dwg
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