&lt;title&gt;Applications of digital speckle photography in experimental mechanics&lt;/title&gt;

Sjoedahl, Mikael; Synnergren, Per; Johnson, Peder

doi:10.1117/12.281161

Cited by 6 publications

(1 citation statement)

References 14 publications

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“…La metrología de moteado es una importante aportación en las técnicas de medición ópticas, utiliza la correlación de la distribución de los puntos brillantes y obscuros llamados speckle, estos patrones son formados en el espacio cuando un objeto difuso es iluminado con luz coherente (Sjoedahi, 1997), (Rastogi, 2001) dicho patrón de moteado es portador de gran información sobre la deformación de un objeto es una técnica de medición de campo completo que sirve para determinar las deformaciones (Peder, 1998).…”

Section: Fotografía Digital De Speckle (Dsp)unclassified

Alineación Láser para Experimentación con Fotografía Digital de Speckle (DSP)

López-Álvarez

Rodríguez-Franco

Jara-Ruiz

et al. 2019

JOTI

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Non-contact techniques have returned to optical metrology one of the most booming branches of science, making digital speckle photography (DSP) one of the most used in the measurement of structural changes in surfaces. This technique uses a laser as a measurement system and compares the changes in the speckle pattern obtained by irradiating the surface that is subjected to deformations; however, the alignment of these systems plays an important role in the results obtained. In this work, the alignment errors of an optical system are estimated based on the analysis of the Fraunhofer diffraction pattern, as well as the statistical properties of the speckle pattern for field near and far. The results indicate that the alignment of the light beam can be determine by a fringes quantification system when passing through a pinhole and that the highly developed speckle pattern is more similar to the intensity distribution shown in the literature.

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Section: Fotografía Digital De Speckle (Dsp)unclassified