Ultrasonic nondestructive testing is a commonly used technique for detecting internal defects of materials and components. It uses the characteristics of ultrasonic waves propagating in materials to detect defects inside materials by receiving echo signals, and its application fields and scenarios are very wide. From material defect detection, structural health monitoring, pressure vessel detection, ultrasonic imaging, etc., it is inseparable from the strong support of ultrasonic non-destructive testing technology. From materials to human bodies, it can help researchers without destroying the structure itself. Under the premise of understanding the internal damage of the structure. The application of ATA-2022B high-voltage amplifier in ultrasonic non-destructive testing system is relatively common. Today we will extract a few related cases and share them with you, hoping to be helpful to your research.
Case 1: Application of ATA-2021B high-voltage amplifier in the measurement experiment of pipeline spiral guided wave signal
The experiment needs to be used, signal generator, ATA-2022B high-voltage amplifier, longitudinal wave straight probe, PZT, oscilloscope, computer and other test equipment
Experiment overview:
When the ratio of wall thickness to radius of the pipe is less than 10%, it can be considered that the propagation law of the Lamb guided wave is similar to that of a flat plate, but due to the circumferential continuity of the pipe, the guided wave will propagate in all directions and travel in a helical manner. In the experiment, the excitation function is designed to be excited by a signal generator and amplified by a power amplifier to excite a lamb wave on the surface of the pipeline. A receiving array is designed at the other end, and the signals of each receiving probe in the array are measured in turn to find the propagation law. Compare with theory.
The power amplifier model used in this experiment is ATA-2022B high-voltage amplifier, which can realize the voltage amplification of signals within 1MHz. During the experiment, the signal generator generates a cosine signal modulated by a 5-cycle Hanning window, with a center frequency of 200kHz. Although the output voltage can drive the piezoelectric transducer, the signal is too weak to be collected at the receiving end. Therefore, the power amplifier is a necessary product. On the basis of the completion of the experiment, a signal separation algorithm based on dictionary reconstruction is designed to separate the overlapping signals of the helical guided wave and perform quantitative analysis on the separated signals.
Case 2: Application of ATA-2021B high-voltage amplifier in the research on the testing of sleeve grouting compactness by stress wave method
The experiment needs to be used, ATA-2022B high-voltage amplifier, sleeve and grouting material, piezoelectric ceramic sheet, data acquisition card, computer with LabVIEW software, and test equipment such as test pieces
Experiment overview:
Based on the active detection technology of the stress wave method, this experiment conducts experimental research on the different compactness conditions of the steel sleeve grouting connection joints, and uses the wavelet packet energy method and the Hilbert-Huang transform method to process the collected signals. Based on the characteristic parameters of the sleeve, the damage index is proposed to judge the compactness of the sleeve. The experimental results show that the damage index can accurately represent the compactness of the grouting and reflect the grouting defects. At the same time, on the basis of the analysis of the test, the simulation and analysis of the stress wave propagation in the steel sleeve grouting connection joint under the signal excitation of the piezoelectric sensor is carried out to reveal the stress wave propagation mechanism, and the simulation results are compared with the test to verify the numerical value. Simulation reliability and accuracy.
Case 3: Lamb wave signal acquisition of ATA-2021B high-voltage amplifier in a homogeneous aluminum plate
Experiments need to use: ATA-2022B (high voltage amplifier), PCI-1714 (data acquisition card), PCI-1721 (data output card) and other experimental overview:
Using PZT (piezoelectric sensor) as the excitation sensor and receiving sensor, the Lamb wave signal in the homogeneous aluminum plate (2024) was tested. The signals of two modes, symmetric (S0) and antisymmetric (A0) that exist in the Lamb wave fundamental frequency at the same time are collected, and the two modes are distinguished by extracting the parameters of the time domain signal.
In this experiment, by considering the dispersion characteristics of the two fundamental frequency modes of the Lamb wave, the time domain model of the Lamb wave is strictly derived, and a coupling term that does not change with the propagation time is obtained, which can be used for mode distinction. Its conclusion solves the multimode problem in nondestructive testing technology based on guided wave. Strict control of the excitation waveform is necessary in verification experiments, requiring high voltage amplifiers that perform well at high frequency/bandwidth. The ATA-2022B high-voltage amplifier provided by Xi'an Antai Electronic Technology Co., Ltd. fully meets the experimental requirements.
ATA-2022B high-voltage amplifier is a dual-channel high-voltage amplifier that can amplify AC and DC signals. The maximum indicator parameters are as follows:
Bandwidth: (-3dB) DC~1MHz
Voltage: 200Vp-p (±100Vp)
Current: 500mAp
Power: 50Wp
Slew rate: ≥445V/us
Channel: dual channel
ATA-2022B high voltage amplifier features:
Equipped with a variable voltage rail, the output voltage range can be adjusted according to the output rail;
The bias voltage can be adjusted, and the DC bias voltage can be adjusted in three levels, and the continuous change can output up to ±160V, so as to realize the asymmetrical signal output requirement;
Equipped with a wide range of power supply, compatible with the power standard requirements of different regions of the world;
With program control function, equipped with over-current protection device;
The gain voltage is 0~60 times digitally adjustable, with two modes: coarse adjustment (1step) and fine adjustment (0.1step);
Equipped with 20mV/VMonitor voltage monitoring port and 2V/AMonitor current monitoring port, it can be directly connected to an oscilloscope for real-time monitoring of output voltage and current.
Specific parameters of ATA-2022B high voltage amplifier
ATA-2022B High Voltage Amplifier Amplitude-Frequency Characteristic Diagram
ATA-2022B high-voltage amplifier small-signal amplitude-frequency characteristic diagram
All in all, ultrasonic nondestructive testing, as a very important testing technology, has a wide range of applications in the industrial and medical fields. It can provide accurate defect detection and structural evaluation, which plays a vital role in ensuring safe production and human health. With the development of science and technology in the future, ultrasonic non-destructive testing technology will be further improved and its application expanded, and the ATA-2022B high-voltage amplifier will continue to shine in the field of non-destructive testing in the future.
This information is organized and published by Aigtek. For more cases and product details, please continue to pay attention to us.