Experimental work on damage detection of shear building structure

초록

This study considers the damage detection of a shear building structure based on the frequency response function (FRF) response. Two FRF data sets before and after attaching an additional mass on the existing structure are compared. The additional mass leads to the change of the dynamic characteristics and this work utilizes such change. The proper orthogonal modes (POMs) corresponding to the first proper orthogonal values (POVs) are extracted from the FRF data in the neighborhood of the first resonance frequency at two different states. It is shown that damage exists at a location to represent an abrupt change in the difference of the POMs at two different states. The vaUdity of the proposed method is illustrated in an experimental work. © 2014 International Information Institute.

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