A Comparative Study of Three Vibration Based Damage Assessment Techniques

Poul Henning Kirkegaard, A. Rytter

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    Abstract

    Three different vibration based damage assessment techniques have been compared. One of the techniques uses the ratios between changes in experimentally and theoretically estimated natural frequencies, respectively, to locate a damage. The second technique relies on updating of an FEM based on experimentally estimated natural frequencies where the stiffness matrix is given as a function of damage size and location. The last technique is based on neural networks trained with the relative changes in natural frequencies. It has been found that all techniques seems to be useful. Especially, the neural networks based technique seems to be very promising.
    OriginalsprogEngelsk
    UdgivelsesstedAalborg
    ForlagDept. of Building Technology and Structural Engineering, Aalborg University
    Antal sider10
    StatusUdgivet - 1994
    NavnFracture and Dynamics
    NummerR9435
    Vol/bind59
    ISSN0902-7513

    Bibliografisk note

    To be presented at the IABSE Colloquium, Bergamo, Italy, March 1995

    PDF for print: 16 pp

    Emneord

    • Damage Assessment
    • Damage Detection
    • Neural Networks
    • Health Minitoring

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