Structural Health Monitoring Systems: an Overview

This paper presents an overview about the nowadays Structural Health Monitoring systems from a metrological point of view. Indeed, many SHMs technologies were developed during the last years, especially as concerning with signal processing, innovative hardware architectures, IoT, and informatics, but the literature has highlighted few investigations about fundamental metrological aspects as accuracy, and reliability analysis. These are fundamental to reduce risk of false alarm or the missing of necessary alarm provoking a waste of money, in the first case, and risks for human line in the second one. The final aim is to stimulate the research in this field by presenting, without any sake of completeness, the state of the art of the technologies and achieved results.