This work was conducted as part of the European Union project ARTIMA ARTIMA (Aircraft Reliability through Intelligent Materials Application) and it investigates the potential for a dual use active constrained layer damping (ACLD) treatment for both vibration control and structural health monitoring. After an earlier study about a flat aluminium plate and two piezoceramic transducers surface-mounted with a thin layer of the soft viscoelastic material ISD112, the new study examines a curved aluminium plate and a large piezoceramic patch mounted with Araldite 2027. The plate was investigated by ultrasonic Lamb waves generated by the patch, and several smaller piezoceramic transducers were used as sensors. Damage was simulated by adding incrementally increasing saw cuts to the plate, and the statistical technique of outlier analysis was used to classify when this damage had occurred. It was found that outlier analysis is not just effective for damage localisation but also for a basic assessment of damage severity, making it a proficient structural health monitoring tool. Future work could involve testing off-path damage where the damage location falls midway between two or more sensor paths.


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    Title :

    Damage detection in an aluminium plate with an active constrained layer damping treatment


    Additional title:

    Schadensfeststellung in einer Aluminiumplatte mit aktiv schwingungsdämpfender Schicht


    Contributors:
    Chetwynd, D. (author) / Lew, T.L. (author) / Worden, K. (author) / Rongong, J.A. (author)


    Publication date :

    2007


    Size :

    8 Seiten, 10 Bilder, 2 Tabellen, 5 Quellen




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English





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