Welcome to Shenzhen Nuo Heng Xing Technology Co., Ltd

Knowledge

Contact Us

You are here:Home >> Knowledge

Knowledge

How does an industrial endoscope camera judge the internal defects of an object during the inspection process?

Time:2016-09-08 Views:192

Industrial endoscope camera judge the internal defects of an object during the inspection process
There are many common detection methods in the field of non-destructive testing. Industrial endoscope cameras have the ability to observe the defects on the surface directly. Various metal and non-metallic materials can be detected too, such as various food and drug storage tanks, oil and gas storage tanks, surface of various internal pipe, all can be defected by endoscopy.
How does the industrial endoscope camera detect the internal defects of the object?
(1) Crack. When the light beam shine on the surface of the detected object, a black or bright line is observed, and at a certain magnification, when the line has an irregular edge, it is judged to be a crack. When the crack is wide, the measurement influence line of the measurable probe will bend.
(2) Peeling. When the beams were irradiated in parallel, it was observed that there was a shadow behind the convex portion; when the beam irradiation angle was changed, a sharp boundary line between the convex portion of the surface and the surrounding object was observed, and it was judged as peeling.
(3) Pull wires and scratches. Under the irradiation of the light beam, it was observed that there was a regular continuous long line on the surface, and it was judged as a pull line.
(4) Pit bulge. When the beam is illuminated at an angle, it is connected to the boundary of the surrounding object without a dividing line. The part near the light source has a shadow, and there is a bright shadow from the light source, it is a pit. When the beam is illuminated at an angle, it is connected to the boundary of the surrounding object without a dividing line. The raised portion has a bright shadow and the back shadow is a pit. 

(5) Spots. When the light beam was irradiated, a smooth uneven surface which was different in color from the surrounding object was observed as a spot.