Time reversal and imaging for structures

Abstract

We present a numerical implementation of the time-reversal (TR) process in the framework of structural health monitoring. In this setting, TR can be used for localizing shocks on structures, as well as, for detecting and localizing defects and areas which have suffered damage. In particular, the present study is focused on beam assemblies, typically utilized for simulating structures of civil engineering interest. For that purpose, Timoshenko’s beam theory is employed since it is more adequate for describing higher-frequency phenomena. The numerical procedure is explained in detail and the capabilities of the proposed methodology are illustrated with several numerical results.