IR Digital Holography for Remote Sensing of Structures
Year: 2023
Authors: Pugliese E., Locatelli M., Bocchi F., Poggi P., Jafrancesco D., Falzone G., Signorini N., Spina D., Meucci R.
Autors Affiliation: CNR-INO, Largo E. Fermi 6, 50125 Florence, Italy
Civil Protection Department (DPC), 00189 Rome, Italy
Settore Sismica, Regione Toscana, 50129 Florence,
Italy
Abstract: In this article, we present a comparison between the data obtained by infrared digital holography (IRDH) and conventional accelerometers in order to evaluate the structural stability of buildings. The tests have carried out on historical buildings located in Tuscany (Italy) under the continuous surveillance of the Italian Civil Protection Department (DPC) by means of accelerometers networks. From the comparison, it emerges that the holographic technique can be profitably used in the field of dynamical analysis of structures thanks to its high sensitivity and to the possibility to operate from remote. Indeed, the holographic technique is able to detect micromovements of the order of 1/100 of the used laser wavelength at 10.6 µm without entering the structures.
Journal/Review: IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
Volume: 61 Pages from: 1 to: 7
KeyWords: CO2 laser, infrared digital holography, IRDH, operational modal analysis, OMADOI: http://dx.doi.org/10.1109/tgrs.2023.3239618