METHOD FOR TESTING OBJECTS FOR VIBRO-IMPACT LOADS Russian patent published in 2022 - IPC G01M7/00 

FIELD: products mechanical testing.

SUBSTANCE: invention relates to the field of mechanical testing of products, namely to testing products for resistance to high-intensity vibro-impact loads with predetermined characteristics in the time and frequency domains. The method includes successive impact on the test object (TO) of a given shock and vibration load. First, the TO on a vibration stand is subjected to a half-sine impact load with a peak acceleration equal to the maximum vibration acceleration of a given vibro-impact load with a duration equal to half the oscillation period, having an average frequency for a given frequency band with a maximum level of spectral characteristics; if, when a shock load is applied to the TO on a vibration stand, due to the limited energy characteristics of the vibration stand used, a shock load with a peak acceleration equal to the maximum vibration acceleration of a given vibro-impact load is not realized, impact load on the TO with a peak acceleration equal to the maximum vibration acceleration of a given vibro-impact load is carried out on a shock stand, then on a vibration stand, the TO is exposed to a vibration load with a duration and levels of spectral characteristics in given frequency bands without reproducing the maximum level of vibration acceleration for a given vibro-impact load, realized at the stage of shock loading; if, under the influence of a vibration load on a vibration stand, due to the limited energy characteristics of the vibration stand used, a vibration load with a duration and levels of spectral characteristics in the frequency bands for a given vibro-impact load is not realized, the vibration effect on the TO is carried out sequentially for each frequency band with the duration and level of the spectral characteristic for given vibroimpact load.

EFFECT: ensuring testing of objects with a wide range of overall dimensions and mass characteristics for high-intensity vibro-impact loading, equivalent to natural impact.

1 cl, 2 dwg