ABSTRACT

This chapter discusses a new procedure for damage detection in framed structures based on changes in mode curvature. It aims to show, through practical examples of framed structures, how it is possible to identify and to localize damage on a structure, comparing mode shapes and the related curvature variations over time, before, during and after an earthquake. The chapter examines the methodology show the possibility to localize the damage occurred in framed structures subjected to strong motion earthquakes through analysis of parameters such as the mode curvature variation over time related to the mode of vibration of a monitored structure. Starting from the results obtained from the numerical and the experimental campaign, it is worth noting the possibility to use the maximum curvature variation to detect and localize the damage occurred in a monitored structure just after a strong motion earthquake.