An eddy current inspection method was developed at the Federal Aviation Administration's Airworthiness Assurance NDI Validation Center (AANC) to easily and rapidly detect subsurface fatigue cracks in the wheel well fairing on the US Coast Guard (USCG) HC-130H aircraft caused by fatigue. The inspection procedure locates cracks as small as 10.2 millimeters in length at 2.54 mm below the skin surface at raised fastener sites. The test procedure developed baseline three USCG aircraft. Inspection results on the three aircraft reveals good correlation with results made during subsequent structural disassembly.


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    Title :

    Crack detection on HC-130H aircraft using low frequency eddy current


    Contributors:
    D. G. Moore (author) / J. E. Mihelic (author) / J. D. Barnes (author)

    Publication date :

    1998


    Size :

    6 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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