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Vibration Analysis of Membrane by Time Average In-Line Digital Holographic Interferometry

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Abstract:

In this paper, in-line digital holography is combined with time average method and applied for vibration analysis of an aluminum membrane. The numerically reconstructed wave from time average holograms contains information of mode shape and mean deformation of the vibrating objects. At lower amplitudes of vibration only the deformation fringes are observed and as the amplitude is increases, the Bessel fringes representing the time average vibration amplitude also become visible. Experimental results for a 10mm size membrane are presented.

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Info:

Periodical:

Key Engineering Materials (Volumes 326-328)

Pages:

23-26

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.326-328.23

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Online since:

December 2006

Authors:

Vijay Raj Singh, Anand Krishna Asundi

Keywords:

Charge Coupled Devices (CCD), In-Line Digital Holography, Mean Deformation, Mixing of Fringes, Numerical Reconstruction, Time Average Method

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© 2006 Trans Tech Publications Ltd. All Rights Reserved

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