METHOD FOR EXPERIMENTAL DETECTION OF FREQUENCIES AND GENERALISED MASSES OF INTERNAL OSCILLATIONS OF TESTED OBJECT Russian patent published in 2013 - IPC G01M7/00 

FIELD: testing equipment.

SUBSTANCE: method includes serial double mechanical excitation of a tested object by harmonic forces with a stepwise varied frequency, created by electrodynamic vibrators, with different masses of movable parts at the first and second excitations, set at the invariable points of the tested object, measurement of vibrations (movements, speeds or accelerations), building of amplitudes and phase frequency characteristics or cophased and quadrature components of vibrations.

EFFECT: increased accuracy of measurements during experimental detection of internal frequencies and generalised masses of oscillating structures of a tested object.

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