Application Cases

Experiment Name: Ultrasonic Echo Wave Group Response Acquisition Experiment

Experiment Principle: First, an experimental platform for acquiring ultrasonic echo wave group responses is independently built based on the piezoelectric ultrasonic testing process. Then, an initial numerical model of the ultrasonic echo wave group response is established according to the working principle and actual conditions of the experimental platform. Subsequently, to eliminate the influence of various uncertainty factors such as cognitive uncertainty and response uncertainty in the setting of structural parameters during numerical modeling, an objective function is constructed based on the experimental echo signals. An uncertainty optimization method is employed to iteratively update the initial model of the ultrasonic echo wave group response. Finally, a high-precision numerical model of the ultrasonic echo wave group response is obtained, generating a rich dataset equivalent to the process of experimentally acquiring the ultrasonic echo wave group response, laying the foundation for the subsequent establishment of a material characteristic parameter identification model.

Experimental Block Diagram:

Experimental Setup Photos:

Experimental Procedure: The generator produces a sinusoidal pulse signal with a pulse duration of 1 μs, a frequency of 1 MHz, and a peak voltage of 10 V. The signal is amplified tenfold by the amplifier to 100 V to drive the transducer. The transducer generates ultrasonic waves through the inverse piezoelectric effect, which are transmitted into the specimen via a couplant. The echo reflected from the bottom surface is received by the transducer and converted back into an electrical signal. The receiving wiring harness is connected in series with a front-end amplification circuit to reduce noise and enhance sensitivity. The signal is then transmitted to a computer via an oscilloscope (with 200 MHz sampling, 16 times average sampling, and a single-point sampling interval of 5 ns) to generate the time-domain signal of the ultrasonic echo wave group.

Application Scenarios: Ultrasonic echo wave group, material parameter identification, uncertainty inverse problem, nondestructive testing, online measurement equipment, piezoelectric ultrasonic testing, BP neural network, non-probabilistic convex model, complex equipment inspection

Product Recommendation: ATA-2000 Series High-Voltage Amplifier

Figure: ATA-2000 Series High-Voltage Amplifier Specifications and Parameters