Development of Pulsed Eddy Current Testing System Based on LabVIEW

Pulsed eddy current testing employs pulses with rich frequency components as the exciting signal, and consequently, there exist many frequency components in corresponding response. Meanwhile, the counter-interference of pulsed eddy current testing is improved, and the detection depth is enlarged also. a LabVIEW based pulsed eddy current testing system was developed. The system was composed of hardware circuit, computer, data acquisition card and relative software. The design of the carrier frequency generator, head filter and sensor was introduced in detail. Testing experiments were done using the system, and the results showed that the system had good testing capability.