FIELD: test equipment.
SUBSTANCE: invention offers the method of non-destructive inspection of material of the tested object (8) passing the sensor (1) with a variable relative speed containing the following stages: registration of the sensor signal (US) by means of the sensor (1); analogue-digital conversion of the sensor signal (US) with receiving of the digitized sensor signal (USD) in the form of sequence of digital words with pre-set, in particular constant, frequency of repetition of words; n-staged decimation of frequency of repetition of words of the digitized sensor signal (USD) or the digital detected signal (UM) extracted from the digitized sensor signal, and this n-staged decimation is performed by means of n-cascade decimator (from 5_1 to 5_n), where n≥2; selection of the output signal (from UA_1 up to UA_n) of one of n cascades (from 5_1 up to 5_n) of the decimator depending on instantaneous relative rate; and filtration of the selected output signal by means of the digital filter (7) synchronized with a frequency of repetition of words of the selected output signal.
EFFECT: invention provides the possibility of reliable and simple execution of non-destructive inspection of tested material at variable relative speeds of the tested object.
9 cl, 1 dwg
