激光超声可视化系统

Overview

The laser ultrasonic field detector uses laser pulses to generate ultrasonic waves in the medium and uses piezoelectric ultrasonic sensors to detect ultrasonic echoes (direct waves or scattered waves). The detector mainly includes three parts: Pulsed laser, piezoelectric ultrasonic sensors, laser automatic scanning control and signal acquisition and processing devices. The Pulsed power laser generates a very narrow ultrasonic pulse by exciting the surface of the tested sample, while the piezoelectric sensor detects the ultrasonic wave generated by the laser pulse, and the defect of the tested sample is obtained through the signal acquisition and processing system. This detection has high resolution in both time and space, wide frequency band, good detection accessibility, and convenient operation, especially suitable for fast laser ultrasound experimental research.

This laser ultrasonic field detector uses a Pulsed laser and a piezoelectric ultrasonic sensor to realize visual detection of the laser ultrasonic field. It can quickly observe the dynamic propagation of ultrasonic waves in real time, and can visually judge whether there is abnormal scattering caused by defects in the ultrasonic field, providing a reliable basis for further quantitative detection, analysis and evaluation. Not only is it suitable for the study of complex ultrasonic fields and their interaction with defects in laboratories, but it is also suitable for on-site ultrasonic non-destructive testing of material structures. It can quickly obtain A-scan images, B-scan images, maximum amplitude images, and animated images of ultrasonic propagation for material non-destructive testing in real-time.