How to solve the imaging problem of materials with large thickness difference and poor density in digital ray detection?

The microblog frequency is 300MHz-300GHz and belongs to electromagnetic waves. It has strong penetrating ability to concrete, and has a large detection depth and is sensitive to internal defects of concrete.

The overhead transmission line guide and ground wire are generally connected by crimping fittings such as tension clamps and connecting pipes, and the connection method is generally crimping.

In May 14th, in China's important Accelerator Research and development base, with the van truck carrying the accelerator out of China Institute of Atomic Energy, the nondestructive testing electron linac developed by the central nuclear group was form

Industrial X-ray photography is a classic non-destructive testing technique used primarily to help quality inspectors discover internal defects or discontinuities in some materials. Radiography has been discovered very early, and early applications ha

When the crack depth is detected by ultrasonic method, there is no water and mud in the crack, because the signal quality obtained by the flat test and the oblique test method are relatively poor.