Significant progress has recently been reported in the area of integrated structural health monitoring, with many sensor systems being deployed in actual operational environments. A key question that needs to be addressed and answered with regard to successfully implementing structural health monitoring technologies in aerospace systems involves the long-term operability, durability, and survivability of integrated sensor systems and their associated hardware. In this activity, the performance characteristics of surface-bonded piezoelectric sensors have been studied under accelerated exposure conditions typically found in an operational aircraft environment. In particular, sensor performance was studied for freeze-thaw, moderate heat levels, humidity, electrochemical attack, substrate bend and tensile strains, and dynamic vibration conditions. The sensor performance was characterized using displacementfield imaging, pitch-catch signal transmission, and pulse-echo signal transmission. Evidence of general performance reduction, sensor cracking, and sensor disbonding were all observed.


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    Titel :

    Characterization of bonded piezoelectric sensor performance and durability in simulated aircraft environments


    Weitere Titelangaben:

    Charakterisierung der Eigenschaften geklebter piezoelektrischer Sensoren und Haltbarkeit bei simulierter Flugzeugumgebung


    Beteiligte:
    Blackshire, J.L. (Autor:in) / Cooney, A.T. (Autor:in)


    Erscheinungsdatum :

    2006


    Format / Umfang :

    8 Seiten, 8 Bilder, 8 Quellen





    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Datenträger


    Sprache :

    Englisch





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