An active identification scheme is presented to improve the accuracy in the health monitoring of multistory buildings . Aseries of shaking table and vibration generator tests are performed using a five story experimental model with eccentricity . The location and extent of damage are estimated by inverse perturbation method using the change in mQdal properties jdentified by ARMA model , Hjgher modes are excited by harmonic excitation in the structure , whereas lower modes are excited by white

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... ise excitation at the base, Translational modes are used to evaluate the change in story stiffness in the vertical damage searching , whereas torsional modes are used to evaluate the change in frame stiffness in the horizontal damage searching . Based on the damage identification results using experimental data, the effectiveness and limjtatiQn of the proposed scherne is jnvestigated , Keuwords : ∠ ) amage detection , Health 脚 纏 o 禰 & Active identtfi ' cation , Shaking table test , Vibration generatOr test , Higher modes