Identification of frequencies of vibration in buildings with wave travel times

A novel technique for identification of buildings by the method of Thomson-Haskell is presented. The goal of this method is to detect changes in the arrival time of waves that propagate through the structure, and with this, to identify the natural frequencies of vibration. The use of this method has the advantage of identifying a relatively small number of parameters, in comparison with recursive methods based on building shear models commonly used in the literature. Simulation results show that the proposed technique is promising for identification and location of structural damage, using wave arrival times and changes on them over time.