Remote monitoring of building oscillation modes by means of real-time Mid Infrared Digital Holography

Dario Delle Donne, Maurizio Ripepe, Pasquale Poggi, Massimiliano Locatelli, Dario Delle Donne, Giorgio Lacanna, Eugenio Pugliese, Riccardo Meucci

Risultato della ricerca: Article

8 Citazioni (Scopus)

Abstract

Non-destructive measurements of deformations are a quite common application of holography but due to the intrinsic limits in the interferometric technique, those are generally confined only to small targets and in controlled environment. Here we present an advanced technique, based on Mid Infrared Digital Holography (MIR DH), which works in outdoor conditions and provides remote and real-time information on the oscillation modes of large engineering structures. Thanks to the long wavelength of the laser radiation, large areas of buildings can be simultaneously mapped with sub-micrometric resolution in terms of their amplitude and frequency oscillation modes providing all the modal parameters vital for all the correct prevention strategies when the functionality and the health status of the structures have to be evaluated. The existing experimental techniques used to evaluate the fundamental modes of a structure are based either on seismometric sensors or on Ground-based Synthetic Aperture Radar (GbSAR). Such devices have both serious drawbacks, which prevent their application at a large scale or in the short term. We here demonstrate that the MIR DH based technique can fully overcome these limitations and has the potential to represent a breakthrough advance in the field of dynamic characterization of large structures.
Lingua originaleEnglish
pagine (da-a)-
Numero di pagine8
RivistaScientific Reports
Stato di pubblicazionePublished - 2016

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holography
oscillations
synthetic aperture radar
health
engineering
laser beams
sensors
wavelengths

All Science Journal Classification (ASJC) codes

  • General

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Delle Donne, D., Ripepe, M., Poggi, P., Locatelli, M., Delle Donne, D., Lacanna, G., ... Meucci, R. (2016). Remote monitoring of building oscillation modes by means of real-time Mid Infrared Digital Holography. Scientific Reports, -.

Remote monitoring of building oscillation modes by means of real-time Mid Infrared Digital Holography. / Delle Donne, Dario; Ripepe, Maurizio; Poggi, Pasquale; Locatelli, Massimiliano; Delle Donne, Dario; Lacanna, Giorgio; Pugliese, Eugenio; Meucci, Riccardo.

In: Scientific Reports, 2016, pag. -.

Risultato della ricerca: Article

Delle Donne, D, Ripepe, M, Poggi, P, Locatelli, M, Delle Donne, D, Lacanna, G, Pugliese, E & Meucci, R 2016, 'Remote monitoring of building oscillation modes by means of real-time Mid Infrared Digital Holography', Scientific Reports, pagg. -.
Delle Donne, Dario ; Ripepe, Maurizio ; Poggi, Pasquale ; Locatelli, Massimiliano ; Delle Donne, Dario ; Lacanna, Giorgio ; Pugliese, Eugenio ; Meucci, Riccardo. / Remote monitoring of building oscillation modes by means of real-time Mid Infrared Digital Holography. In: Scientific Reports. 2016 ; pagg. -.
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AU - Delle Donne, Dario

AU - Ripepe, Maurizio

AU - Poggi, Pasquale

AU - Locatelli, Massimiliano

AU - Delle Donne, Dario

AU - Lacanna, Giorgio

AU - Pugliese, Eugenio

AU - Meucci, Riccardo

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N2 - Non-destructive measurements of deformations are a quite common application of holography but due to the intrinsic limits in the interferometric technique, those are generally confined only to small targets and in controlled environment. Here we present an advanced technique, based on Mid Infrared Digital Holography (MIR DH), which works in outdoor conditions and provides remote and real-time information on the oscillation modes of large engineering structures. Thanks to the long wavelength of the laser radiation, large areas of buildings can be simultaneously mapped with sub-micrometric resolution in terms of their amplitude and frequency oscillation modes providing all the modal parameters vital for all the correct prevention strategies when the functionality and the health status of the structures have to be evaluated. The existing experimental techniques used to evaluate the fundamental modes of a structure are based either on seismometric sensors or on Ground-based Synthetic Aperture Radar (GbSAR). Such devices have both serious drawbacks, which prevent their application at a large scale or in the short term. We here demonstrate that the MIR DH based technique can fully overcome these limitations and has the potential to represent a breakthrough advance in the field of dynamic characterization of large structures.

AB - Non-destructive measurements of deformations are a quite common application of holography but due to the intrinsic limits in the interferometric technique, those are generally confined only to small targets and in controlled environment. Here we present an advanced technique, based on Mid Infrared Digital Holography (MIR DH), which works in outdoor conditions and provides remote and real-time information on the oscillation modes of large engineering structures. Thanks to the long wavelength of the laser radiation, large areas of buildings can be simultaneously mapped with sub-micrometric resolution in terms of their amplitude and frequency oscillation modes providing all the modal parameters vital for all the correct prevention strategies when the functionality and the health status of the structures have to be evaluated. The existing experimental techniques used to evaluate the fundamental modes of a structure are based either on seismometric sensors or on Ground-based Synthetic Aperture Radar (GbSAR). Such devices have both serious drawbacks, which prevent their application at a large scale or in the short term. We here demonstrate that the MIR DH based technique can fully overcome these limitations and has the potential to represent a breakthrough advance in the field of dynamic characterization of large structures.

KW - Digital Holography; building oscillation modes

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