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

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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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Edited by:

Xiaochun Tang, Xiaohong Chen, Yuxiang Dong, Xiuguo Wei and Qingsheng Yang

Pages:

2474-2478

Citation:

B. Ye et al., "A Novel Technique for Eliminating Probe Lift-Off in Eddy Current Nondestructive Testing", Applied Mechanics and Materials, Vols. 291-294, pp. 2474-2478, 2013

Online since:

February 2013

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$38.00

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