Advances in NDT and Materials Characterization by Eddy Currents

G. Almeida, J. Gonzalez, L. Rosado, P. Vilaça, T.G. Santos

    Research output: Contribution to journalArticleScientificpeer-review

    25 Citations (Scopus)
    136 Downloads (Pure)

    Abstract

    New materials and production technologies demand improved non-destructive techniques for inspection and defect evaluation, especially when critical safety applications are involved. In this paper a new non-destructive testing (NDT) system is presented. The innovative system is composed by a new type of eddy currents probe, electronic devices for signal generation, conditioning and conversion, automated mechanized scanning and analysis software. This new probe provides enhanced lift-off immunity and improved sensitivity for defects detection. The IOnic system was developed mostly to be used for the defects detection on aluminum solid state processed alloys as Friction Stir Welding (FSW) and Friction Spot Welding (FSpW), however recent studies revealed IOnic probe good capacities on other applications.

    This study evaluates the capacity of the IOnic probe on detecting buried defects under the surface of Graphite and Stainless steel AISI 304 alloys extending the probe application to other materials and defect morphologies. In order to evaluate its performance results, a comparison with results from conventional EC probes is discussed.
    Original languageEnglish
    Pages (from-to)359-364
    JournalProcedia CIRP
    Volume7
    DOIs
    Publication statusPublished - 2013
    MoE publication typeA1 Journal article-refereed
    EventCIRP Conference on Manufacturing Systems - Setubal, Portugal
    Duration: 29 May 201330 May 2013
    Conference number: 46

    Keywords

    • eddy currents
    • graphite
    • non-destructive testing
    • planar and differential probe
    • stainless steel

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