METHOD FOR AUTOMATED CONTROL OF ARTICLES CONTINUITY AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2020 - IPC G01N25/72 

FIELD: measuring equipment.

SUBSTANCE: invention relates to measurement equipment and can be used for evaluation of reliability and quality of various items. Method comprises placing on a product at the beginning of a scanning path a reference defect corresponding to the actual defect in the article according to characteristics and having dimensions corresponding to the minimum possible size of the defect in the article, measurement before control of the signal value on the article at a distance of not more than the size of the minimum defect, measuring the value of the signal change on the reference defect, setting the value of the threshold signal for detecting defects in the article, two-dimensional scanning in coordinates x, y of surface of the monitored object along the trajectory of reciprocal motion with a physical field radiation sensor with pitch Δx, Δy, exposing the article during scanning to a physical field in form of a pulse signal with frequency f_p, measurement of value of radiation signals of physical field after interaction with article from each point of article surface, registration of defects by comparison of current value of signal along scanning path with value of threshold signal. According to the invention, when a defect is detected, the pulse frequency of the exposure is increased by the physical field and the scanning pitch is reduced. After jumping beyond boundaries of j-th defect, pulse frequency and scanning pitch are reduced. Method is implemented using a device for automated control of articles continuity.

EFFECT: provision of efficient reliable control of continuity of multilayer complex structures and their elements in production process and in real operating conditions, id est reduced error of determining boundaries and location of defect areas without reducing control efficiency.

3 cl, 18 dwg, 2 tbl