Application Cases

Ultrasonic technology is a widely applied emerging technology that has gained extensive use across various fields such as medicine, industry, and scientific research. As a critical component of ultrasonic sensors, power amplifiers play a vital role in ultrasonic research. In this article, Aigtek Electronics has compiled a collection of past experimental cases in the field of ultrasonics, hoping to assist those engaged in the broader ultrasonic domain.

Area 1: Ultrasonic Non-Destructive Testing
Ultrasonic non-destructive testing is a commonly used technique for detecting internal defects in materials and components. It leverages the propagation characteristics of ultrasonic waves in materials to identify internal defects by analyzing received echo signals.

Application of High-Voltage Amplifier in Nonlinear Ultrasonic Testing of Duct Grouting

This experiment utilizes nonlinear ultrasonic methods to identify defects and damage in concrete by analyzing various nonlinear ultrasonic phenomena that occur when ultrasonic waves propagate through concrete. These phenomena mainly include higher-order harmonics, acoustic resonance frequency shifts, and sidebands under modulation and mixing. Compared to conventional linear ultrasonic methods, this approach offers higher sensitivity in detecting minor material defects, making it easier to identify them.

Application of Power Amplifier in Lamb Wave-Based Damage Identification for Pressure-Resistant Structures

Based on the structural characteristics of pressure-resistant structures, this experiment designed a damage identification system for such structures. Ignoring environmental noise, piezoelectric sensors were used to generate Lamb waves in real time and monitor structural responses. Through data collection and processing, damage parameters were determined. When damage occurs, structural discontinuities cause scattering and refraction of waves during propagation, leading to waveform changes. These changes are then analyzed to extract damage-related information.

Area 2: Ultrasonic Atomization
Ultrasonic atomization technology is a technique that uses ultrasonic energy to generate fine droplets, widely applied in fields such as medicine, bioscience, and materials science. In the ultrasonic atomization process, power amplifiers play a key role by providing sufficient energy to drive ultrasonic emission devices, achieving effective atomization results.

Application of Power Amplifier in the Effect of Microhole Piezoelectric Ultrasonic Atomization

To clarify the influence of liquid physical properties and other factors on the atomization effect of microhole piezoelectric ultrasonics, this experiment established a testing system for microhole piezoelectric ultrasonic atomization. The effects of surface tension, viscosity, microhole diameter, driving frequency, and driving voltage on droplet size and atomization flow rate were measured, and the trends in atomization effectiveness were analyzed.

Area 3: Ultrasonic Motor Drive
Ultrasonic motors are electrical devices that utilize ultrasonic vibrations to generate mechanical rotation or linear motion. By leveraging the inverse piezoelectric effect of piezoelectric ceramics, high-frequency alternating current is converted into ultrasonic vibrations of metal elastic bodies. These vibrations are then transformed into rotational or linear motion of rotors or movers through frictional transmission, making them widely applicable in various fields.

Application of Power Amplifier in Bidirectional Motion of Composite Ultrasonic Motors

This experiment used a single-channel special excitation signal (composed of two sinusoidal waveforms with a frequency ratio of 1:2) to drive a bending composite ultrasonic motor. The motion trajectory of the driving foot and the basic output characteristics of the prototype were tested, verifying the feasibility of the working principle of the ultrasonic motor based on a figure-eight vibration trajectory.

For more experimental cases on the application of power amplifiers in ultrasonic research, Aigtek Electronics will share them in future articles. Stay tuned!