Vibration Analysis of Membrane by Time Average In-Line Digital Holographic Interferometry |
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| Journal | Key Engineering Materials (Volumes 326 - 328) |
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| Volume | Experimental Mechanics in Nano and Biotechnology |
| Edited by | Soon-Bok Lee and Yun-Jae Kim |
| Pages | 23-26 |
| DOI | 10.4028/www.scientific.net/KEM.326-328.23 |
| Citation | Vijay Raj Singh et al., 2006, Key Engineering Materials, 326-328, 23 |
| 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 |
| 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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