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Analysis of mechanical vibrations through speckle interferometry: A phase-space approach |
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| Authors: | G Ayala AL Rivera G Garnica |
| Institution: | a Instituto Tecnológico de San Juan del Río, Departamento de Ingeniería Industrial, C.P. 76800, San Juan del Río, Querétaro, Mexico b Centro de Física Aplicada y Tecnología Avanzada, UNAM., A.P. 1-1010, Santiago de Qro., Querétaro 76000, Mexico c Centro de Inv. en Óptica, Loma del Bosque 115 León, Gto. 37150, Mexico |
| Abstract: | The goal of this paper is to determine hidden periodicities (spatial frequencies) into speckles patterns obtained in a diffuser after reflection of an unexpanded laser beam over an aluminum membrane by means of the so-called Wigner Distribution Function (WDF). These spatial frequencies are used to find the temporal frequencies at which the mechanic system is vibrating. |
| Keywords: | Speckle interferometry Mechanical vibrations Phase space |
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