Application Cases

Experiment Name: Guided Wave-Based Pipeline Axial Stress Measurement Experiment

Research Direction: Nondestructive Testing of Pipelines

Test Equipment: ATA-2041 High-Voltage Amplifier, Signal Generator, Oscilloscope, Computer, etc.

Experimental Process:

Figure 1: Experimental Setup Diagram

A Gaussian pulse generated by the signal generator is fed into the ATA-2041 high-voltage amplifier for distortion-free pulse amplification, resulting in a high-voltage pulse signal. Owing to the excellent linear amplification capability of the ATA-2041 high-voltage amplifier, the high-voltage signal retains the exact same signal characteristics as the edited signal in the signal generator, ensuring accurate excitation of the modal frequency band required for longitudinal guided waves. The excited guided waves are further utilized to detect stress.

Experimental Results:

The guided waves generated by exciting the piezoelectric transducer array using the ATA-2041 high-voltage amplifier can accurately measure the axial stress of the steel pipe. As shown in the attached figure below, the voltage amplitude of the received signal reaches 0.1 V, indicating that the guided wave signal generated by the excitation signal has an excellent signal-to-noise ratio (SNR). This serves as the hardware foundation for ensuring good consistency in the measurement results. Additionally, the shape of the L(0,2) direct wave signal demonstrates the effective linear amplification of the power amplifier, experimentally eliminating the influence of extraneous errors on the results. This forms the experimental basis for ensuring the validity of the analysis.

Figure 2: Experimental Results

High-Voltage Amplifier Recommendation: ATA-2041

Figure: ATA-2041 High-Voltage Amplifier Specifications

The experimental materials in this article have been compiled and released by Xi'an Aigtek Electronics. For more experimental solutions, please continue to follow the Aigtek official website. Aigtek is a high-tech enterprise in China specializing in the research, development, production, and sales of measurement instruments. The company has consistently focused on the R&D and manufacturing of test instrument products such as voltage amplifiers, power amplifiers, power amplifier modules, and high-precision current sources.