1. Corrosion
Under the beams, the block and point -shaped surface are observed, and the slightly unevenness is corroded slightly under a certain magnification.
2. Crack
When the beam is exposed to the surface of the detection object, the black or bright lines are observed, and when the lines are irregularly edge, the lines are determined as a crack.
3. Peel
When the beam is parallel, the shadow is observed behind the protruding part; if the beam irradiation angle is changed, the raised part of the surface is observed that there is a clear boundary line with the surrounding detection objects, and it is determined as the peeling.
4. Summary
When the beam is irradiated at any angle, there are extra objects other than structures that are basically different from the surrounding objects and brightness.
5. concave pit
When the beam is irradiated at a certain angle, it is connected to the boundary of the inspection objects, and there is no boundaries. There are shadows near the light source, and there are bright shadows from the light source, which is a pit. When the beam is irradiated at a certain angle, it is connected to the boundary of the inspection objects, and there is no boundaries. The raised part is bright, and the shadow behind it is a pit.
6. Welding leakage
When the beam is irradiated at a certain angle, it is observed that it is connected to the melting metal.
The above are the six judgment standards compiled by Xiaobian. After reading, do you have a clear understanding of these standards. If you want to know more about industrial endoscopes, please consult VSNDT
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