scholarly journals Eddy current probe evaluation: experimental measurements and system interaction

1990 ◽  
Vol 23 (6) ◽  
pp. 358
Author(s):  
K.H. Hedengren ◽  
R.O. McCary ◽  
J.D. Young
Keyword(s):  
Eddy Current ◽  
Experimental Measurements

scholarly journals Defect detection in stainless steel tubes with AMR and GMR sensors using remote field eddy current inspection

ACTA IMEKO ◽  
2015 ◽  
Vol 4 (2) ◽  
pp. 62
Author(s):  
Artur Lopes Ribeiro ◽  
A. Lopes Ribeiro ◽  
Helena G. Ramos ◽  
Tiago J. Rocha
Keyword(s):  
Stainless Steel ◽  
Defect Detection ◽  
Eddy Current ◽  
High Sensitivity ◽  
Wheatstone Bridge ◽  
Eddy Current Testing ◽  
Experimental Measurements ◽  
Steel Tubes ◽  
Optimal Position ◽  
Current Testing

The purpose of this paper is to compare the performance of the giant magneto-resistor (GMR) and anisotropic magneto-resistor (AMR) sensors for remote field eddy current testing in stainless steel tubes. Two remote field eddy current probes were built to compare detection and characterization capabilities in standard defects like longitudinal and transverse defects. Both probes include a coil to produce a sinusoidal magnetic field that penetrates the tube wall. Each probe includes a detector with GMR and AMR sensors, where each sensor has four magneto-resistive elements configured in a Wheatstone bridge. Each sensor needs to be biased differently to operate in the high sensitivity linear mode. The description of the measurement system used to detect defects is present in the paper. For the choice of the detector optimal position, numerical simulation and experimental measurements were performed. For comparison of these sensors in defect detection using remote field eddy current testing, the experimental measurements were performed under the same conditions. The results are presented and discussed in the paper.

scholarly journals EXPERIMENTAL MEASUREMENTS OF THE EDDY CURRENT SIGNAL DUE TO A FLAWED, CONDUCTING HALF SPACE

1983 ◽  
Vol 1 (3) ◽  
pp. 105-110 ◽  
Author(s):  
STUART A. LONG ◽  
SOMPONGSE TOOMSAWASDI ◽  
AFROZ J.M. ZAMAN
Keyword(s):  
Half Space ◽  
Eddy Current ◽  
Experimental Measurements ◽  
Current Signal

Exact First Order Finite Element Modeling for Eddy Current NDE

1991 ◽  
Vol 3 (1) ◽  
pp. 235-253 ◽  
Author(s):  
L. D. Philipp ◽  
Q. H. Nguyen ◽  
D. D. Derkacht ◽  
D. J. Lynch ◽  
A. Mahmood
Keyword(s):  
Finite Element ◽  
Finite Element Modeling ◽  
Eddy Current ◽  
Element Modeling ◽  
First Order ◽  
Eddy Current Nde

MESSINE, a Parametric Three-Dimensional Eddy Current Model

2000 ◽  
Vol 12 (1) ◽  
pp. 65-86 ◽  
Author(s):  
R. La ◽  
B. Benoist ◽  
B. de Barmon ◽  
M. Talvard ◽  
R. Lengelle ◽  
...  
Keyword(s):  
Eddy Current ◽  
Current Model ◽  
Three Dimensional
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