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    Damage identification of a segment of a box-section girder subject to a moving Load

    Access Status
    Fulltext not available
    Authors
    Law, S.
    Li, Jun
    Date
    2011
    Type
    Conference Paper
    
    Metadata
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    Citation
    Law, S. and Li, J. 2011. Damage identification of a segment of a box-section girder subject to a moving Load, in Proceedings of the 4th International Operational Modal Analysis Conference (IOMAC 2011), 9-11 May 2011, pp. 420-428. Instanbul: Turkey.
    Source Title
    4th International Operational Modal Analysis Conference, IOMAC 2011
    ISBN
    9781632668530
    School
    Department of Civil Engineering
    URI
    http://hdl.handle.net/20.500.11937/4410
    Collection
    • Curtin Research Publications
    Abstract

    This paper proposes a substructural damage identification approach based on a dynamic response reconstruction technique using the unit impulse response function in the wavelet domain. The relationship between two sets of time-domain response vectors from the substructure subject to a moving load is formulated. The damage in a segment of the structure is identified from the measured dynamic responses without information of the moving load using the response sensitivity-based method. The adaptive Tikhonov regularization technique is adopted to improve the identification results when noise effect is included in the measurements. A three-dimensional box-section girder subject to a single moving force is taken as an example to validate the proposed method of substructural damage identification with good results.

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