Damage Detection in an Offshore Structure

Rune Brincker, Poul Henning Kirkegaard, P. Andersen, M. E. Martinez

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    Abstract

    The structural integrity of a multi-pile offshore platform is investigated by using a vibration based damage detection scheme. Changes in structural integrity are assumed to be reflected in the modal parameters estimated from only output data using an Auto-Regressive Moving Average (ARMA) model. By use of the estimates of the modal parameters and their corresponding variances a probability based damage indicator is formulated. This approach indicates, that since the construction of the platform, minor structural changes have taken place.
    OriginalsprogEngelsk
    UdgivelsesstedAalborg
    ForlagDept. of Building Technology and Structural Engineering, Aalborg University
    StatusUdgivet - 1994
    NavnFracture and Dynamics
    Nummer56
    Vol/bindR9434
    ISSN0902-7513

    Bibliografisk note

    PDF for print: 12 pp

    Presented at the 13th International Modal Analysis Conference, Nashville, Tennessee, February 13-16, 1995

    Emneord

    • Offshore Structures
    • Damage Detection
    • Auto-Regressive Moving Average Models
    • ARMA Models
    • Modal Parameters

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