METHOD OF PREDICTING RESIDUAL RESOURCE BY MEANS OF NON-DESTRUCTING INSPECTION DURING EXAMINATION OF INDUSTRIAL SAFETY OF EQUIPMENT Russian patent published in 2006 - IPC G01N29/14 

FIELD: prediction of residual resource of equipment.

SUBSTANCE: examination of industrial safety of metal of tested object is performed by spectral analysis method within three most informative frequency ranges: f_sd=17,8255881-50,20 Hz; f_ed=81,67956689-433,89 Hz; f_sh-b=1899,668736-2674,25628 Hz. In this case for predicting residual resource and current physical-mechanical parameters the transient factor k_ρ is used: k_ρ=[ρ*_eq-i-ρ*_eq-d]/[ ρ*_eq-st-ρ*_eq-i], which correctness is provided by weighing of spectral bands by Hamming's window function which allows establishing the following characteristics simultaneously: ρ*_eq-st - equivalent standard angle of friction of structural non-uniformities of natural roughness while taking degradation into account at the moment of examination fro one of maximal amplitudes of frequency resonance, which is presented clearly at the general background of standard areas values; ρ*_eq-i - equivalent angle of friction of structural non-uniformities during examination while taking degradation of maximal amplitudes of frequency resonance; ρ*_eq-d - equivalent angle of friction of structural non-uniformities of natural roughness at the moment of complete degradation.

EFFECT: simplified procedure of degradation; high precision.

3 cl, 3 dwg