The Method Research on Improving Singnal-to-Noise Ratio and Reliability in Eddy Testing for Zr-4 Tubes

Abstract:

To the problems in the tube eddy testing, some improved ways are given by using a three-point probe matching the eddy instrument model ET-204 with low field voltage, and selecting a phase having the optimum singnal-to-noise ratio with impedance plane technique.The testing results show that the method possesses a jamproof capability for distant testing with high sensitivity.