Repair of delaminated beams subjected to compressive force via piezoelectric layers

    Authors

    Q. Wang; G. Y. Zhou;S. T. Quek

    Comments

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    Abbreviated Journal Title

    Adv. Struct. Eng.

    Keywords

    stability of delaminated structures; piezoelectric materials; repair of; structures; buckling load; smart materials and structures; sliding mode; of fracture; PLATES; ACTUATORS; SENSORS; CRACK; Construction & Building Technology; Engineering, Civil

    Abstract

    The research in the paper presents the application of piezoelectric layers on repair of delaminated beams subjected to compressive force. The discontinuity of the shear stresses induced at the two tips of the delamination, which may result in the slidin-mode of fracture, due to the bending of beams at the buckling mode is first studied from a mechanics model. The application of piezoelectric materials on repair of the delaminated beam structures is investigated by employing the electromechanical characteristics to remove the sliding mode of fracture at the tips of the delamination. A comprehensive mechanics analysis is provided to calculate and design the voltages on the piezoelectric layers to erase the shear stress discontinuity at the tips of the delamination. The dependence of the voltages on the location and the size of the delarnination is carefully studied. Numerical simulations are conducted for the derivation of the buckling load of the delaminated beam with different boundary conditions and the voltages on the piezoelectric patches. The research presented serves to provide information on the design of piezoelectric materials for the repair of delaminated structures.

    Journal Title

    Advances in Structural Engineering

    Volume

    8

    Issue/Number

    4

    Publication Date

    1-1-2005

    Document Type

    Article

    Language

    English

    First Page

    411

    Last Page

    425

    WOS Identifier

    WOS:000231684300006

    ISSN

    1369-4332

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