METHOD OF DETERMINING STATE OF OBJECTS DURING VIBRATION DIAGNOSTICS Russian patent published in 2022 - IPC G01M7/02 

FIELD: test.

SUBSTANCE: invention relates to test equipment, in particular to a method of determining the state of objects during tests of aerospace or other equipment for vibration strength, and can be used to determine damages of load-bearing structures. When implementing the method, the structure is subjected to vibration in a given frequency range; at that, the structure is initially stabilized by the effect of broadband random vibration of a low level. After that, sinusoidal vibration tests are carried out at a low loading level. Then, standard mechanical loads are performed and sinusoidal vibration tests are repeated at low load level. For each load level, responses of the investigated structure are obtained in a given frequency range, in the form of dependence of vibration accelerations on frequency. According to the results of comparison of values of these parameters at two low levels of vibration loading, the state of integrity of the structure is determined.

EFFECT: improvement of reliability and validity of vibration diagnostics.

1 cl, 2 dwg