4. High-speed intelligent ultrasonic data acquisition system
The high-speed intelligent ultrasonic data acquisition sys- tem is made up of PC, a traditional ultrasonic fault detector, and a high-speed ultrasonic data acquisition card and soft- ware, as shown in Fig. 1. The system realizes the digitization of the ultrasonic signal, the analysis and processing of the digital signal, and the intelligent recognization and automatic evaluation test results. According to the scheduled scanning way, the system scans the parts. At the same time, the defect of the test parts is shown using the digital signal and imaging processing technologies. The test parts’ sound velocity and thickness can be measured also.