Damage detection of non-linear reinforced concrete structure by means of single sensing node

This paper presents an application of an output-only structural identification algorithm specifically designed for low-cost monitoring systems on a structure with strongly non-linear behavior. The identification procedure is conducted simulating the presence of a single smart sensor node on the specimen, in order to identify the natural frequencies and amplitudes of collected accelerations in real time. The estimated parameters are used to develop a non-linear frequency-amplitude model representing the structural response, subsequently employed for damage detection.