Time-averaged vibration mode viewing with DSPI

F. Garoi; D. Apostol; A. Sima; V. Damian; P. C. Logofatu; V. Nascov; Iuliana Iordache; Mihaela Bojan

doi:10.1117/12.741925

8 May 2007 Time-averaged vibration mode viewing with DSPI

F. Garoi, D. Apostol, A. Sima, V. Damian, P. C. Logofatu, V. Nascov, Iuliana Iordache, Mihaela Bojan

Proceedings Volume 6635, Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies III; 66350V (2007) https://doi.org/10.1117/12.741925
Event: Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies III, 2006, Bucharest, Romania

Abstract

We discuss an experiment for detecting small deformations by speckle interferometry. Vibration modes of an aluminium plate are observed by digital speckle pattern interferometry (DSPI). A Mach-Zender interferometer arrangement is used and the speckle interferograms are recorded with a CCD camera and processed on a computer. These fringes depend on the path differences due to the vibration of the aluminium plate from its original state. Vibration amplitudes between 0.3-0.6 &mgr; were measured for seven vibration modes.

Citation Download Citation

F. Garoi, D. Apostol, A. Sima, V. Damian, P. C. Logofatu, V. Nascov, Iuliana Iordache, and Mihaela Bojan "Time-averaged vibration mode viewing with DSPI", Proc. SPIE 6635, Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies III, 66350V (8 May 2007); https://doi.org/10.1117/12.741925

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