scholarly journals Calibration Methods for Eddy Current Measurement Systems

1985 ◽  
pp. 411-420 ◽  
Author(s):  
J. C. Moulder ◽  
J. C. Gerlitz ◽  
B. A. Auld ◽  
M. Riaziat ◽  
S. Jeffries ◽  
...  
Keyword(s):  
Eddy Current ◽  
Current Measurement ◽  
Measurement Systems ◽  
Calibration Methods

Analysis of Eddy-Current Measurement System for Residual Stress Assessment in Stainless Steel Grade 304

2015 ◽  
Vol 659 ◽  
pp. 623-627 ◽  
Author(s):  
Cherdpong Jomdecha ◽  
Isaratat Phung-On
Keyword(s):  
Residual Stress ◽  
Stainless Steel ◽  
Eddy Current ◽  
Measurement System ◽  
System Analysis ◽  
Stress Measurement ◽  
Steel Grade ◽  
Current Measurement ◽  
Residual Stress Measurement ◽  
Stress Assessment

The objective of this paper is an analysis of statistical discreteness and measurement capability of an eddy-current measurement system for residual stress assessment in stainless steel Grade 304 (SS304). Cylindrical specimens with 50 mm in diameter and 12 mm thickness were prepared to generate residual stress by Resistance Spot Welding at which the welding currents were set at 12, 14, and 16 kA. The eddy-current measurement system was including a probe with frequency range of 0.1 to 3 MHz and an eddy current flaw detector. They were performed by contacting the probe on the specimen. The measurements were performed particularly in the vicinity of heat affected zone (HAZ). In order to determine the results of the residual stress measurement, the calibration curves between static tensile stress and eddy current impedance at various frequencies were accomplished. The Measurement System Analysis (MSA) was utilized to evaluate the changed eddy-current probe impedance from residual stress. The results showed that using eddy current technique at 1 MHz for residual stress measurement was the most efficient. It can be achieved the Gauge Repeatability & Reproducibility %GR&R at 16.61479 and Number of Distinct Categories (NDC) at 8. As applied on actual butt welded joint, it could yield the uncertainty of ± 58 MPa at 95 % (UISO).

Eddy current measurement of the wall thickness and conductivity of circular non-magnetic conductive tubes

1996 ◽  
Vol 29 (2) ◽  
pp. 103-109 ◽  
Author(s):  
Benoit de Halleux ◽  
Bruno de Limburg Stirum ◽  
Andrei I'tchelintsev
Keyword(s):  
Wall Thickness ◽  
Eddy Current ◽  
Current Measurement

Current measurement systems by utilizing cryogenic techniques for the absolute magnetic flux quantum measurement

2005 ◽  
Author(s):  
T. Endo ◽  
Y. Murayama ◽  
Y. Sakamoto ◽  
T. Sakuraba ◽  
F. Shiota
Keyword(s):  
Magnetic Flux ◽  
Quantum Measurement ◽  
Current Measurement ◽  
Flux Quantum ◽  
Measurement Systems ◽  
Magnetic Flux Quantum ◽  
The Absolute

scholarly journals Model based optimization of driver-pickup separation for eddy current measurement of gap

2018 ◽  
Author(s):  
G. Klein ◽  
J. Morelli ◽  
T. W. Krause
Keyword(s):  
Eddy Current ◽  
Current Measurement ◽  
Model Based

scholarly journals Robot-guided eddy current measurement of yarn orientation change during stepwise 3D draping

2017 ◽  
Vol 254 ◽  
pp. 042005 ◽  
Author(s):  
G Bardl ◽  
A M Khan ◽  
A Nocke ◽  
C Cherif
Keyword(s):  
Eddy Current ◽  
Current Measurement ◽  
Orientation Change
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