Industrial nondestructive testing - electron linear accelerator

 

In the industrial field, non-destructive testing is a crucial technology that enables the detection of defects inside or on the surface of the object under test without damaging it. As one of the important equipment of non-destructive testing, electron linear accelerator has the characteristics of high precision, high efficiency and high reliability, and is widely used in aviation, aerospace, nuclear industry, petrochemical industry and other fields. In this paper, the principle, application and advantages of electron linear accelerator in industrial nondestructive testing are introduced in detail.

First, the basic principle of electron linear accelerator

 

The electron linear accelerator is a device that produces high-energy radiation by accelerating electron beam. Its basic structure includes electron gun, accelerator tube, microwave power source, pulse modulator and energy control system. The electron gun generates and emits the electron beam, and the microwave power source provides the required microwave electromagnetic field, and the electron beam is accelerated through the microwave electromagnetic field in the acceleration tube, and finally produces the high-energy electron beam or X-ray.

 

In nondestructive testing, the high-energy X-rays produced by the electron linear accelerator interact with the atoms inside the object through penetrating the object to produce scattering, absorption and other effects. These effects can change the intensity of the rays to reflect the structure and defect information inside the object. Through the detection and analysis of the transmitted rays, the internal defects of the measured object can be accurately judged.

 

Second, the application of electron linear accelerator in industrial nondestructive testing

 

Electron linear accelerator has a wide range of applications in industrial nondestructive testing, which is mainly used in the following aspects:

 

Weld inspection: In aerospace, petrochemical and other fields, the quality of the weld is directly related to the safety and reliability of the entire structure. The electron linear accelerator can produce high-energy X-rays to detect the weld through perspective, and effectively find the defects such as slag inclusion, pores and cracks in the weld to ensure the welding quality.

Casting inspection: Casting in the production process is prone to porosity, shrinkage, inclusion and other defects, these defects will affect the mechanical properties and service life of the casting. The high-energy X-ray of the electron linear accelerator can penetrate the casting and detect the internal defects, which provides strong support for the quality control of the casting.

 

Plate testing: In the production process of sheet metal, there may be defects such as delamination, cracks, inclusions. The electron linear accelerator can detect the plate quickly and accurately, find the defect in time and take the corresponding repair measures to improve the quality of the plate.

 

Composite material testing: Composite materials are widely used in aviation, aerospace and other fields because of their excellent properties. However, the interlayer bonding quality and internal defects of composites have important effects on their properties. The electron linear accelerator can penetrate the composite material and detect the defects such as interlayer desticking, bubbles, cracks, etc., which provides reliable guarantee for the production and application of the composite material.

 

Third, the advantages of electron linear accelerator in non-destructive testing

 

Electron linear accelerator has many advantages in non-destructive testing, mainly including the following aspects:

 

High energy resolution: Electron linac is capable of producing high-energy X-rays with high energy resolution, which can penetrate thicker objects under test and detect deeper defects.

 

High detection efficiency: The electron linear accelerator has a high power output and stability, which can achieve fast and efficient detection. At the same time, it has a wide detection range and is suitable for non-destructive testing of various materials and structures.

 

High-precision detection: The X-ray generated by the electron linear accelerator has good orientation and penetration, and can accurately reflect the defect information inside the measured object to achieve high-precision detection.

 

Environmental protection and energy saving: electron linear accelerator using electron acceleration technology, compared with the traditional radioisotope detection method, without the use of radioactive substances, has the advantage of environmental protection and energy saving.

 

Fourth, the development trend and challenge of electron linear accelerator

 

With the continuous development of industrial non-destructive testing technology, electronic linear accelerators are also undergoing technical innovation and performance improvement. In the future, the development trend of electron linAC may include the following aspects:

 

High energy: In order to meet the needs of more complex and fine detection, the electron linear accelerator will be developed in the direction of higher energy to improve the detection depth and accuracy.

 

Intelligent: Through the introduction of artificial intelligence, big data and other technologies, the automatic and intelligent operation of the electronic linear accelerator is realized, and the detection efficiency and accuracy are improved.

 

Miniaturization: With the continuous progress of microelectronics technology, electron linear accelerators are expected to achieve miniaturization and portability, making them more suitable for field detection and mobile operations.

 

However, the development of electron linAC also faces some challenges. For example, the safety protection of high-energy radiation, the stability and reliability of equipment, and cost control problems need to be solved in the development and application process.

 

V. Summary

 

As an important equipment for industrial nondestructive testing, electron linear accelerator has the advantages of high precision, high efficiency and high reliability, and has wide application prospects in aerospace, petrochemical and other fields. With the continuous progress of technology and the continuous expansion of the market, electronic linear accelerators will continue to play an important role in the field of non-destructive testing and testing, providing strong support for industrial production and safety. At the same time, we also need to pay attention to its development trends and challenges, strengthen technology research and development and innovation, and promote the continuous improvement and optimization of electronic linear accelerators.