The US Air Force is interested in building on the Conditioned based Maintenance (CBM) concept as a method to sustain its current and future aircraft will require developing techniques to characterize damage that could be present in the aircraft structure. This must be done with NDE methods that can be used, at a minimum, in Depot inspection environment. However, even laboratory experiments have shown damage quantification for structures approaching the complexity of those found in aircraft is not a simple task. All current inspection methods used for US Air Force aircraft detect the presence of damage and do not provide quantitative data regarding the size of the damage, unless there is significant disassembly of the aircraft, such as removing fasteners. An initial concept to characterize damage in aircraft structures with minimal disassembly has been presented to address this shortfall of current NDE techniques. The process must address all the relevant variables that can affect the response from a defect. The strategy will use a systems-based approach to systematically address the variables and determine how they may affect the NDE signal. It will include the use of computer models to assist in developing signal analysis and classification process, plus perform extensive parametric studies to determine which variables need to be addressed by the measurement and analysis technique. The model-based characterization process will require extensive validation studies, which must include data from real aircraft structures to provide an accurate depiction of how the signals are affected by these structures. This development should result in a methodology for characterizing damage in aircraft and input is always sought for concepts, methods, and ideas to facilitate this development process.


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    Title :

    Aging aircraft NDE. Capabilities, challenges, and opportunities


    Additional title:

    ZfP zur Flugzeugalterung. Fähigkeiten, Herausforderungen und Möglichkeiten


    Contributors:
    Lindgren, E.A. (author) / Knopp, J.S. (author) / Aldrin, J.C. (author) / Steffes, G.J. (author) / Buynak, C.F. (author)


    Publication date :

    2007


    Size :

    8 Seiten, 4 Bilder, 13 Quellen





    Type of media :

    Conference paper


    Type of material :

    Storage medium


    Language :

    English








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