The low-frequency eddy current testing technology has more sensitivity on detecting the defects inside pipeline wall, so it has a very good prospect.

the portable steel-plate detector has been designed to perform the steel-plate material testing in service through the analysis of conventional eddy current testing principle,using the low-frequency eddy current testing technology,applying the hardware chip S3C44B0X which has ARM7TDMI microprocessor core,and using the software μC/OS-II which has real-time embedded operating system core.

DDS was a new technology of frequency synthesizer,so when the multi-frequency eddy current test system was parted modularly,this paper designed the signal source based on DDS technology,the power band pass filter based VCVS and the analogue orthogonal lock-in amplifer.

Development of electrodes crack eddy current testing system of electric power locomotive;

The Parameters Optimization of Eddy Current Testing for Tubes Based on Finite Element Analysis;

Induction voltage values of the eddy current testing coil with different carburized depths are calculated.

An eddy current detecting and imaging apparatus has been developed in this paper.

Reasonable choice of characteristic frequency in eddy current detection for pressure pipeline;

Study on eddy current detection of hole defects in steel plate by a wavelet analysis method;

Theoretical and numerical analysis of the eddy current detection for pressure pipeline;