METHOD OF AUTOMATED NON-DESTRUCTIVE CONTROL OF PRODUCT QUALITY AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2018 - IPC G01N29/04 G01N27/90 

FIELD: test and measurement equipment.

SUBSTANCE: usage: for automated non-destructive testing of product quality. Core of the invention is inscanning the surface of the monitored object with at least one information sensor of the physical field, measuring the values of the radiation signals of the physical field from each point of the surface of the monitored object, breaking the entire range of values of the radiation signals of the physical field from their values by I intervals, recording the measured signals as belonging to the corresponding intervals, determining the number of measured signals in each interval K_I, calculating the difference in the number of measured signals in the subsequent and previous intervals ΔTO_I= K_{I + 1}-TO_I over the entire range of values of the measured signals, and as a threshold value of the value of the radiation signal of the physical field, a value from the interval is chosed, for which the difference in the number of measured signals in this and the previous intervals is less than zero, and the difference in the number of measured signals in this and subsequent intervals is greater than zero, while measuring the magnitude of the signal at the beginning of scanning the article on the reference defect U_n, measuring the value of the signal on the qualitative part of the product near the reference defect U₀ at the point i = 1, where i is the integer coordinate of the scanning path on the surface of the controlled article, measuring the signal change on the reference defect ΔU_n=|U_n-U₀|, measuring the step of discreteness of measurement of signals along the scanning path: Δx_i=x_i+1-x_i, measuring the value of the signal at the current point "i" of scanning the product (U_i), measure the difference of signals between neighboring points: ΔU_i=U_i+1-U_i, registering the beginning of the j defect by the gradient sign, registering the coordinate (x^M._j) of the beginning of the j defect by the gradient sign, measuring the magnitude of the largest signal in the region of the j defect: U^j_max=U^j_i, if U_i+1>U_i and U_i+2>U_i+1, measuring the magnitude of the greatest change in the signal (ΔU^max_∂j) on the j defect, registering the end of the j defect on the gradient sign, registering the coordinate (x^K_j) of the end of the j defect by the gradient sign: x^K_j=Δx_ixp, where p is the integer coordinate of the end of the j defect, measuring the extent of the j defect along the gradient sign: Δx^d_j= x^K_j-x^M._j, registering the presence of the j defect on the product in a specified manner.

EFFECT: technical result: ensuring the possibility of prompt and reliable quality control of the continuity of multi-layered complex structures and their elements in the production process and in real operating conditions.

2 cl, 6 dwg, 1 tbl