METHOD FOR TIMELY DETERMINATION OF LOCATION AND TYPE OF IMPACT ON VIBRATION-LOADED OBJECT Russian patent published in 2021 - IPC G01M7/02 

FIELD: measuring equipment.

SUBSTANCE: invention relates to the field of measurement, monitoring, control of the condition and search for damage sites of vibration-loaded objects in order to timely determine the wear of the object elements and prevent their destruction, determine the type and place of impact on the object. During the implementation of the method, a model of vibration-loaded objects is formed in the Cartesian coordinate system. Each of the measuring points is linked to the terrain with a mark on the formed object model in the Cartesian coordinate system. The maximum measurement time is set. A database of critical vibration amplitudes and a set of spectral patterns of known impacts on each measured object monitoring point is created. Then the amplitudes of the vibration oscillations are measured and spectrograms are recorded in the operating conditions of the object at each of the measuring points. At the same time, the monitoring results are compared by the vibration amplitude. If the amplitude value is less than the given critical one, then the vibration parameters are continued to be measuring. If the amplitude value is greater than the given critical amplitude, then the resulting spectrogram is compared with a set of spectral patterns. If the resulting spectrogram does not correspond to any of the set of spectral patterns, then the nature of the impact is determined, a new spectral pattern of impact is registered, and the database is replenished. When the obtained spectrogram is found to correspond to a spectral pattern from a variety of spectral patterns, it signals the location and type of impact, and the object is monitored throughout the entire operation period.

EFFECT: timely and more accurate determination of the coordinates of damage to extended vibration-loaded objects, which will reduce the accident rate of complex technical devices (aircraft, artificial Earth satellites, ships, residential and non-residential structures, bridges, etc.), increase their resource and prevent injuries (death) of operating and maintenance personnel.

1 cl, 1 dwg