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Experimental Investigation of Influence on Non-destructive Testing by Form of Eddy Current Sensor Probe

Abstract : Eddy current testing is a kind of non-destructive testing (NDT) method based on the principle of electromagnetic induction. The probe is the key of eddy current non-destructive inspection and its design or combination of form will influence detectability. A complete set of eddy current testing system is designed for standard testing copper and defect copper. Under the same lift-off distance and the same high frequency excitation signal, designed three types of probe, which are single probe single coil, single probe double coil and double probe double coil, are used to carry out NDT experiment. Experimental results show that sensitivity and resolution of detection system are obvious difference among the different form of eddy current sensor probe. Probe shape and coil winding are improved according to the experimental results. Corresponding improved probe is adopted to carry out NDT experiment at the same condition. Experimental results show that detectability is enhanced significantly.
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Fengyun Xie, Jihui Zhou. Experimental Investigation of Influence on Non-destructive Testing by Form of Eddy Current Sensor Probe. 4th Conference on Computer and Computing Technologies in Agriculture (CCTA), Oct 2010, Nanchang, China. pp.443-449, ⟨10.1007/978-3-642-18369-0_52⟩. ⟨hal-01564836⟩

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