A Novel Technique for Eliminating Probe Lift-Off in Eddy Current Nondestructive Testing

Bo Ye; Ming Li; Fang Zeng

doi:10.4028/www.scientific.net/AMM.291-294.2474

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 291-294A Novel Technique for Eliminating Probe Lift-Off...

A Novel Technique for Eliminating Probe Lift-Off in Eddy Current Nondestructive Testing

Abstract:

The lift-off problem is a very important problem in eddy current testing, which will influence the measurement accuracy. This paper proposes a novel technique for eliminating the probe lift-off in eddy current nondestructive testing. Firstly, the basic principles and characteristics of eddy current testing were introduced. Secondly, this paper analyzed and studied the coil impedance responses caused by the variations of the probe lift-off. Based on simulation results, this paper presents that choosing proper probe excitation frequency can eliminate the disturbance of coil impedance caused by the lift-off, and obtains better results.

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Periodical:

Applied Mechanics and Materials (Volumes 291-294)

Pages:

2474-2478

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.291-294.2474

Citation:

Cite this paper

Online since:

February 2013

Authors:

Bo Ye, Ming Li, Fang Zeng

Keywords:

Eddy Current Nondestructive Testing, Excitation Frequency, Impedance Variations, Lift-Off

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References

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