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A novel damage localization method is proposed, which is based on asubstructuring approach and makes use of Vector Auto-Regressive with eXogenousinput (VARX) models. The substructuring approach aims to divide the monitoredstructure into several multi-DOF isolated substructures. Later, each individualsubstructure is modeled by a VARX model, and the health of each substructure isdetermined analyzing the variation of the VARX model. The method allows todetect whether the isolated substructure is damaged, and besides allows tolocate the damage within the substructure. Only measured displacement data isrequired to estimate the isolated substructure's VARX model. Moreover, it isnot necessary to have a priori knowledge of the structural model. The proposedmethod is validated by simulations of an eight-storey shear building.

SHM method for damage localization based on substructuring and VARX models