What is Ultrasonic Impedance Analyzer?

What is Ultrasonic Impedance Analyzer?

Ultrasonic impedance analyzer is a professional instrument used to measure and analyze the impedance characteristics of ultrasonic-related devices and materials. The following is a detailed introduction to it:

Working principle
Based on ultrasonic propagation and reflection: by emitting ultrasonic pulses and then receiving the reflected signal. According to the propagation time, intensity and spectral characteristics of the signal, the physical properties of the material, such as sound velocity, density, absorption coefficient and interface reflectivity, are determined, and then the structure, density change and defect of the material are inferred.
Use frequency automatic tracking: In actual ultrasonic processing, changes in working conditions such as external temperature, material stiffness, and load will cause the resonant frequency of the ultrasonic system to drift, resulting in changes in the resonant frequency of the transducer, reducing the vibration amplitude of the transducer working surface and reducing the processing efficiency. The instrument can track the resonant frequency of the transducer in real time to ensure that the system is in the best working state.

Main functions
Parameter measurement: It can measure many parameters of ultrasonic products, such as resonant frequency Fs, anti-resonant frequency Fp, static capacitance C0, dynamic impedance R1, dynamic capacitance C1, dynamic inductance L1, free capacitance CT, free dielectric constant, mechanical quality factor Qm, electromechanical coupling coefficient Keff, etc.
Performance evaluation and defect judgment: The quality and performance of piezoelectric ceramics, transducers and other devices can be intuitively judged through the admittance circle diagram and logarithmic curve. If there is delamination or cracks inside the ceramic sheet, the logarithmic curve will have multiple peaks and multiple parasitic circles will appear on the admittance circle diagram.

Application field
Material science research: Help researchers understand the microstructure, phase change behavior and physical properties of materials, provide strong support for the development and optimization of new materials, and can detect parameters such as density, porosity, and uniformity of materials.
Industrial manufacturing: In the production of ultrasonic equipment, such as ultrasonic cleaning machines, ultrasonic welding machines, etc., it is used to detect the performance of key components such as transducers and horns in the equipment to ensure the stability and reliability of the equipment. In industries such as aerospace and automobile manufacturing, it can detect defects such as cracks, bubbles, and holes inside the material, which is crucial to ensuring product quality and safety.
Biomedical field: In the research and development and quality control of equipment such as ultrasonic therapy and ultrasonic diagnosis, it is used to measure the performance of ultrasonic transducers to ensure the treatment effect and diagnostic accuracy of the equipment. It can also be used to study the acoustic properties of biological tissues and provide reference for biomedical research and clinical applications.
Product Features
High-precision measurement: The frequency measurement accuracy can reach 0.001KHz, etc., and various parameters can be accurately obtained.
Easy operation: It usually has functions such as touch screen digital display, high degree of automation, simple operation, and reduces manual errors. Some can also be controlled by mobile phone APP.
Data processing and storage: The test data can be stored and printed, which is convenient for data tracing and analysis, and can also be automatically screened and counted.