Referenced Items are not available for this document.
This paper describes a signal simulator which is designed to calibrate eddy current probes. By using simultaneously an excitation coil and an electrically conducting plane, the simulator can emulate signals which correspond to spot welds with different flaws. The presence of a conducting plane allows a wide variation of the amplitude and phase of the excitation coil voltage during the calibration of a probe. A mathematical model for the simulator is derived and used to study the variation of the impedance change upon the parameters of the probe. Numerical computation shows that the impedance change depends in an important way on the frequency of the excitation coil current
Published in:
Magnetics, IEEE Transactions on
(Volume:30
,
Issue:
1
)
Date of Publication: Jan 1994
- Page(s):
- 92 - 97
- ISSN :
- 0018-9464
- INSPEC Accession Number:
- 4667004
- Digital Object Identifier :
- 10.1109/20.272520
- Date of Current Version :
- 06 August 2002
- Issue Date :
- Jan 1994
- Sponsored by :
- IEEE Magnetics Society
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