scholarly journals Development of a System to Invert Eddy-Current Data and Reconstruct Flaws

1983 ◽  
pp. 1555-1571 ◽  
Author(s):  
L. David Sabbagh ◽  
Harold A. Sabbagh
Keyword(s):  
Eddy Current ◽  
Current Data

Two Dimensional Multi-Frequency Eddy Current Data Fusion

1996 ◽  
pp. 2125-2132 ◽  
Author(s):  
M. Mina ◽  
J. Yim ◽  
S. S. Udpa ◽  
L. Udpa ◽  
W. Lord ◽  
...  
Keyword(s):  
Data Fusion ◽  
Eddy Current ◽  
Current Data ◽  
Two Dimensional

Dynamic thresholding for automated analysis of bobbin probe eddy current data

2002 ◽  
Vol 15 (1-4) ◽  
pp. 39-46 ◽  
Author(s):  
H. Shekhar ◽  
R. Polikar ◽  
P. Ramuhalli ◽  
X. Liu ◽  
M. Das ◽  
...  
Keyword(s):  
Eddy Current ◽  
Automated Analysis ◽  
Current Data

Automated eddy current data analysis

2011 ◽  
Vol 41 (1/2/3/4) ◽  
pp. 75
Author(s):  
Raimond Grimberg ◽  
Adriana Savin ◽  
Sorin Leitoiu ◽  
Alina Bruma ◽  
Rozina Steigmann ◽  
...  
Keyword(s):  
Data Analysis ◽  
Eddy Current ◽  
Current Data

Simultaneous Extraction of Multiple Parameters From a Transmit–Receive Eddy Current Probe Above a Layered Planar Conductive Structure

2020 ◽  
Vol 3 (4) ◽  
Author(s):  
Mark S. Luloff ◽  
Stephane Contant ◽  
Jordan Morelli ◽  
Thomas W. Krause
Keyword(s):  
Wall Thickness ◽  
Eddy Current ◽  
Measurement Accuracy ◽  
Large Range ◽  
Current Data ◽  
Parallel Plates ◽  
Inversion Algorithm ◽  
Simultaneous Extraction ◽  
Multiple Parameters ◽  
Gap Measurement

Abstract A validated analytical model of a transmit–receive coil pair situated above two parallel plates, separated by an air gap, was used as the basis for an inversion algorithm (IA) to extract probe liftoff, second layer plate resistivity, and plate-to-plate gap from multi-frequency eddy current data. The IA was tested over a large range of first layer wall thickness (3.80–4.64 mm), second layer plate resistivity (1.7–174 µΩ cm), second layer wall thickness (1.20–4.85 mm), probe liftoff (2.8–7.9 mm), and plate-to-plate gap (0–13.3 mm). At nominal liftoff (2.8 mm), the IA achieved a gap measurement accuracy of ±0.7 mm and was able to return good estimates of the second layer resistivity within ±1 μΩ cm for low resistivity samples, but with decreasing accuracy for higher resistivities. When the gap was fixed, the IA was able to measure changes in probe liftoff (relative to nominal) to an accuracy of ±0.2 mm. The reported accuracy and a demonstration for the ability to accurately estimate parameters outside of the calibration range provide confidence in the potential utility of the algorithm.

Sign in / Sign up

Export Citation Format

Share Document