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Proceedings Paper

Modal analysis of a cantilever beam by use of the slope-assisted BOTDA method for damage identification
Author(s): A. Minardo; A. Coscetta; S. Pirozzi; R. Bernini; L. Zeni
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Paper Abstract

We report an experimental study on a cantilever beam, aimed to verify the feasibility of modal analysis by distributed Brillouin sensing for structural damage identification. Damage identification was carried out for three defect cases, analyzing the changes of the natural frequencies and mode shapes of the first two bending modes. Comparison with finite element method (FEM) analysis shows that the damage can be detected and localized, within the limitation dictated by the spatial resolution (30 cm) of our sensor.

Paper Details

Date Published: 20 May 2013
PDF: 6 pages
Proc. SPIE 8794, Fifth European Workshop on Optical Fibre Sensors, 87943D (20 May 2013); doi: 10.1117/12.2025992
Show Author Affiliations
A. Minardo, Second Univ. of Naples (Italy)
A. Coscetta, Second Univ. of Naples (Italy)
S. Pirozzi, Second Univ. of Naples (Italy)
R. Bernini, CNR, Istituto per il Rilevamento Elettromagnetico dell'Ambiente (Italy)
L. Zeni, Second Univ. of Naples (Italy)
CNR, Istituto per il Rilevamento Elettromagnetico dell'Ambiente (Italy)


Published in SPIE Proceedings Vol. 8794:
Fifth European Workshop on Optical Fibre Sensors
Leszek R. Jaroszewicz, Editor(s)

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