Structural Damage Identification in an Aluminum Composite Plate by Brillouin Sensing

Author

Minardo, Aldo ; Coscetta, Agnese ; Bernini, Romeo ; Ruiz-Lombera, Ruben ; Mirapeix Serrano, Jesus ; Lopez-Higuera, Jose Miguel ; Zeni, Luigi

Author_Institution

Dept. of Ind. & Inf. Eng., Seconda Univ. di Napoli, Aversa, Italy

Volume

15

Issue

2

fYear

2015

fDate

Feb. 2015

Firstpage

659

Lastpage

660

Abstract

We report the results of an experimental modal analysis aimed to estimate the location of mechanical changes in an aluminum composite panel. A distributed Brillouin optical fiber sensor was used to retrieve the mode shapes of the first two bending modes of the plate. We show that the position of the defect is retrieved from the strain mode shapes, with a resolution determined by the disposition of the fiber across the structure, as well as by the spatial resolution of the interrogation unit.

Keywords

aluminium; bending; condition monitoring; distributed sensors; fibre optic sensors; modal analysis; plates (structures); strain sensors; structural engineering; vibrational modes; Al; aluminum composite plate; bending mode; distributed Brillouin optical fiber sensor; experimental modal analysis; interrogation unit; mechanical change location estimation; spatial resolution; strain mode shape; structural damage identification; Aluminum; Modal analysis; Optical fiber sensors; Scattering; Shape; Strain; Brillouin fiber sensing; Stimulated Brillouin scattering; distributed fiber sensor;

fLanguage

English

Journal_Title

Sensors Journal, IEEE

Publisher

ieee

ISSN

1530-437X

Type

jour

DOI

10.1109/JSEN.2014.2364072

Filename

6930717