FIELD: test equipment.
SUBSTANCE: construction is subject to loading step by step at increase in amplitude of influence. Reaction of construction is registered at check points and relations of load are built depending on reaction of construction to load. Construction is loaded step by step as by means of low level harmonic vibration and by means of shock influence generated by devices of the same class and with same maximal amplitude as devices used among tested items. Common frequency range is selected for shock and vibration influence. Transmission functions for amplitude spectra are determined by harmonic vibration and for shock spectra by shock influence. Factors of relations of transmission functions are calculated for received shock and amplitude spectra and in case if those factors decline from 1 for value being higher than error admitted during test, non-linearity frequency ranges are reported in the construction.
EFFECT: improved precision.
1 dwg
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