Identification of Multiple Cracks from Eddy Current Testing Signal with Noise Source by Image Processing and Inverse Analysis

2002 ◽  
Vol 2002.15 (0) ◽  
pp. 413-414
Author(s):  
Yoshiaki NAGAYA ◽  
Toshiyuki TAKAGI ◽  
Tetsuya UCHIMOTO ◽  
Haoyu HUANG
Keyword(s):  
Image Processing ◽  
Eddy Current ◽  
Inverse Analysis ◽  
Noise Source ◽  
Eddy Current Testing ◽  
Multiple Cracks ◽  
Current Testing ◽  
Testing Signal

Eddy Current Testing Sensor Design and Comparative Experiment Study Based on Amorphous Alloy

2012 ◽  
Vol 182-183 ◽  
pp. 416-421
Author(s):  
Lin Yu Yang ◽  
Run Qiao Yu ◽  
Yu Lan Qiu
Keyword(s):  
Amorphous Alloy ◽  
Eddy Current ◽  
Eddy Current Testing ◽  
High Permeability ◽  
Mnzn Ferrite ◽  
Current Testing ◽  
Sensor Performance ◽  
Ferrite Material ◽  
Testing Signal ◽  
New Sensors

After comparing the principle features of MnZn ferrite material of high permeability and amorphous alloy of FeCuNbSiB, this paper produced an improved solution to sensor performance by applying highly magnetic non-brilliant alloy of iron base to the testing windings of eddy current testing sensors and designed the two-dimensional decomposition testing circuit in terms of sensor testing signal. It ended with a comparison between new sensors and traditional ferrite winding sensors in terms of sensibility and linearity. The experiment results showed that the new eddy current sensors have much better sensibility and linearity compared with their traditional peers.

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