# Non-destructive testing technology does not destroy parts or materials, can be directly tested on site, and is highly efficient. At present, there are five main types of non-destructive testing: Ultrasonic Testing, Radiographic Testing, Magnetic Particle Testing, Penetrant Testing, and Eddy Testing. Current Testing). There are many types of rays, and there are three types of X-rays , gamma rays, and neutron rays that are easy to penetrate. These three types of radiation are used for non-destructive testing, where X-rays and gamma rays are widely used for defect detection in boiler and pressure vessel welds and other industrial products and structural materials, while neutron rays are used only for special occasions. The most important application of ray inspection is to probe macroscopic geometric defects (inspection) inside the test piece. Radiation detection can be divided into a number of different methods depending on the characteristics, such as the type of radiation used, th...
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