OBJECTS CONTROL THERMOGRAPHIC METHOD AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2018 - IPC G01N25/72 G01J5/60 

FIELD: defectoscopy.

SUBSTANCE: group of inventions relates to the field of nondestructive testing and can be used to identify defects close to the defects in the controlled object surface. Thermographic method for controlling products has been announced, which contains the following steps: heating the site of the monitored object with the creation of an unsteady temperature field, recording the controlled product surface degree of heating, by measuring the defective area IR radiation value in comparison to the defect-free environment heating degree; positioning the of the defective area position and its dimensions and determining the defect permissibility when using the product; locally load the area with signs of defectiveness, and then carrying out thermographic inspection, determining by the difference of thermographic images before and after loading the propensity of defects to development under the action of a local load; synchronize the speed of moving the product with the speed of shooting the thermal imager. Also product thermographic inspection device is proposed containing the temperature field local features thermal imbalances creation device between the defective and defect-free areas of the object; at least one recording device for recording thermographic images – a thermal imager in the form of an IR camera enclosed in a heat-shielding or temperature controlled casing – following one another at a time interval; device for evaluating thermographic images; current-carrying electrodes fixed on the monitored product and connected to a current pulse generator; and the device additionally comprises a measuring head for creating a local load in synchronism with the transmission of a current pulse or with an adjustable delay relative to it, provided with a movable rod with an indentor, interacting with a controlled sample,indenter indentation force value measuring sensor and its displacement measuring sensor mounted on the base platform motorized table.

EFFECT: increased information content and reliability of data of non-destructive testing.

10 cl, 7 dwg