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

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. Products thermographic control method involves the controlled object area heating or cooling. Next, recording the controlled product surface degree of heating or cooling, by measuring the defective area IR radiation value in comparison to the defect-free environment heating or cooling degree. Positioning of the defective area position and its dimensions and determining the defect permissibility when using the product. Synchronizing the product and its heating source movement speed with the thermal imager shooting speed. Identifying the defect type by comparison with the similar material thermograms containing the typical defects set in the computer's database. Evaluating the temperature profile measurement results in two mutually perpendicular directions in time by at least one of the evaluation criteria, characterizing the heat flux in the measurements area. Novelty is the local load action onto the controlled area, which provokes the defect size growth. At that, the danger degree and the defect propensity to develop determination is determined by the defect's growth value by the first image (before the force action) subtraction from the second one (after the force action). Products thermographic inspection device contains 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 the thermographic images recording following one another at a time interval, and the thermal image data evaluation device. Novelty is the local load creation device in the form of measuring-power head equipped with the movable rod with indenter, interacting with the controlled sample, indenter indentation force value measuring sensor and its displacement measuring sensor mounted on the base platform motorized table, and the thermal imager in the form of IR camera enclosed into the heat-shielding or thermostatic casing.

EFFECT: expansion of functional capabilities.

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