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Proceedings Paper

Vibration analysis of layered structures by optoelectronics methods
Author(s): Giuseppe Schirripa Spagnolo; Massimo Pappalardo; Antonio Iula; Riccardo Carotenuto; Raffaele Majo; Dario Ambrosini; Domenica Paoletti
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Paper Abstract

Today, the vibration analysis of laminated structures represents an important field in engineering metrology. To perform non-invasive vibration measurements in industrial environments, optical methods are a preferable choice. Electronic Speckle Pattern Interferometry is a method, which permits full field and non-contacting displacement or deformation measurements. The experimental measurement of the resonant frequencies for the piezoceramic material is generally performed by impedance analysis. In this work, Electronic Speckle Pattern Interferometry (ESPI) technique is proposed for studying vibration of piezoceramic/nickel circular laminated plates. The circular membrane is a composite made of a nickel alloy disk with thickness 0. 1 mm and diameter 32 mm, to which a piezoceramic disk, with the same thickness and a smaller diameter (24 mm) is bonded. The time average frame subtraction technique is improved by subtracting two Bessel fringe patterns at two different amplitude levels. A brief analysis of the techniques and some preliminary experimental tests are presented.

Paper Details

Date Published: 22 May 2002
PDF: 10 pages
Proc. SPIE 4827, Fifth International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, (22 May 2002); doi: 10.1117/12.468151
Show Author Affiliations
Giuseppe Schirripa Spagnolo, Univ. degli Studi di Roma Tre (Italy)
Massimo Pappalardo, Univ. degli Studi di Roma Tre (Italy)
Antonio Iula, Univ. degli Studi di Roma Tre (Italy)
Riccardo Carotenuto, Univ. degli Studi di Roma Tre (Italy)
Raffaele Majo, Univ. degli Studi di Roma Tre (Italy)
Dario Ambrosini, INFM/Univ. degli Studi dell'Aquila (Italy)
Domenica Paoletti, INFM/Univ. degli Studi dell'Aquila (Italy)


Published in SPIE Proceedings Vol. 4827:
Fifth International Conference on Vibration Measurements by Laser Techniques: Advances and Applications
Enrico Primo Tomasini, Editor(s)

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