Talking about the Application of Power Amplifier in the Field of Ultrasonic Guided Wave Nondestructive Testing

Ultrasonic testing is a traditional non-destructive testing technology. The electromagnetic ultrasonic guided wave testing technology evolved from ultrasonic testing overcomes the disadvantages of conventional ultrasonic testing technology that requires point-by-point coupling.

Ultrasonic testing is a traditional non-destructive testing technology. The electromagnetic ultrasonic guided wave testing technology evolved from ultrasonic testing overcomes the disadvantages of conventional ultrasonic testing technology that requires point-by-point coupling. It has the unique advantages of single-point excitation and long-distance testing, ideal conditions The next detection distance can reach more than 100 meters, and the detection efficiency has been greatly improved. There are two main excitation modes of electromagnetic ultrasonic guided waves, namely magnetostrictive force excitation and Lorentz force excitation. Today we will focus on the application of power amplifiers in magnetostrictive force excitation nondestructive testing.

The phenomenon of magnetostriction is a characteristic shared by all ferromagnetic materials. It is divided into the positive magnetostrictive effect (also known as the Joule effect) and the inverse magnetostrictive effect (also known as the Villari effect). The positive magnetostrictive effect refers to During the magnetization process of ferromagnetic materials, the effect of geometrical size and shape changes due to the change of external magnetic field conditions. The reverse effect of magnetostriction is opposite. The ferromagnetic material in a stable magnetic field is deformed by external force, and its internal magnetic field is also changed as a result. When the ferromagnetic material is simultaneously subjected to the coupling effect of the static magnetic field and the dynamic magnetic field orthogonal to the static magnetic field, the material will undergo a certain distortion at this time. This phenomenon is called the torsional magnetostriction effect (also known as Weide Mann effect).

In the process of magnetostrictive nondestructive testing, the power amplifier applies an excitation signal to the excitation object, uses ultrasonic guided waves to detect, and performs signal processing to determine the location of the defect. The selectable modes and excitation methods have extremely high degrees of freedom. At the same time, unlike traditional guided wave technology, magnetostrictive guided waves can overcome oily, bend or coating on the surface for detection, and can realize long-term health monitoring, real-time assessment of the health of components and life prediction.

AigtekATA-2000 series power amplifiers have a maximum output voltage of 1600Vp-p (±800Vp), a maximum output current of 500mAp, and a bandwidth (-3dB) up to DC~1MHz. They are widely used in ultrasonic nondestructive testing, underwater communications, mems testing, and particle analysis. Select and other fields of scientific research to help the development of scientific research in our country.

Ultrasonic non-destructive testing technology can efficiently complete the test without damaging the tested part, and the result has good directivity, which can provide an important basis for quality analysis. Through the above introduction, I believe you have a certain understanding of the application of power amplifiers in the field of ultrasonic non-destructive testing. If you want to continue to understand the application of power amplifiers for ultrasonic testing, measurement calibration sources, and harness testers, please continue to pay attention to the official website of Antai Electronics www. aigtek.com.