Paint layer thickness infrared thermal imaging detection device and detection method

Abstract

The invention discloses a paint layer thickness infrared thermal imaging detection device and method, and the device comprises an upper computer (1) which is connected with a function generator (2); the function generator (2) is connected with the power amplifier (3); the power amplifier (3) is connected with the halogen lamp (5); the function generator (2) is connected with the thermal imager (4); the amplitude images and the phase images of the standard test block and the actual object are repeatedly measured and compared by changing the phase locking frequency, and the influence of paint layer thickness change and the influence of paint layer weathering in the detection result image are distinguished so as to detect the paint layer thickness of the power equipment; the technical problems that in the actual detection process, the thermophysical property change caused by weathering of a paint layer coated on the surface of equipment influences the detection result, so that in the detection result image, the thermophysical property change is superposed and mixed with the influence generated by the paint layer thickness change, and the paint layer thickness is difficult to detect are solved.

Description

technical field [0001] The invention belongs to the technical field of detection in the field of non-destructive detection, and in particular relates to an infrared thermal imaging detection device and a detection method for paint layer thickness. Background technique [0002] For equipment and structural parts mainly made of steel and other metal materials that are susceptible to corrosion, such as power equipment, bridges, communication towers, etc., due to long-term exposure to the external environment, they are extremely vulnerable to corrosion by factors such as water vapor in the atmosphere and reduce Structural strength shortens the service life and brings great safety hazards while increasing maintenance costs. Therefore, in order to prevent the metal parts in the equipment from being damaged by corrosion and prolong the operating life of the equipment, a layer of protective paint is usually applied to the surface of the metal parts of the equipment to enhance the in...

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention is to provide an infrared thermal imaging detection device and detection method for the thickness of the paint layer, so as to solve the problem that the change of thermal physical properties caused by the weathering of the paint layer coated on the surface of the equipment will also affect the detection results during the actual detection process. Therefore, in the test result image, it will be superimposed and mixed with the influence of the change of paint layer thickness, which will bring technical problems such as difficulties in the detection of paint layer thickness

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