Implementación de la Técnica de Correlación de Imágenes Digitales con Software Libre

Jorge Guillermo Diaz-Rodríguez; Iván Mauricio Castillo-González; Adrián Eduardo Peñaranda-Domínguez

doi:10.15649/2346030X.875

Autores/as

Jorge Guillermo Diaz-Rodríguez Universidad Santo Tomás
Iván Mauricio Castillo-González Universidad Santo Tomás
Adrián Eduardo Peñaranda-Domínguez Universidad Santo Tomás

DOI:

https://doi.org/10.15649/2346030X.875

Palabras clave:

DIC, caracterización de materiales, medición de tensiones, mecánica experimental,, análisis de tensiones

Resumen

Hoy en día, la medición experimental de esfuerzos se hace por medio de técnicas que entregan campos completos de deformación o de la diagonal principal de una matriz de esfuerzos. La técnica de Correlación de Imágenes Digitales (DIC en idioma inglés) entrega desplazamientos del campo de visión mediante el análisis de fotografías digitales antes y después de una carga. Existen sistemas comerciales, que tienen un elevado costo, y sistemas de código abierto y gratis pero que no tienen soporte; esto hace que su implementación presente dificultades. El articulo trata de la apropiación de la técnica DIC usando software de código abierto. Para esto, se hicieron algunos ensayos de medición y se compararan con soluciones analíticas para evaluar la precisión de la medición experimental. Resultados se comparan con análisis por elementos finitos encontrando que para dar mediciones cualitativas, que puede ser el caso de demostraciones, un lente no muy especializado puede ser útil, mientras que para mediciones cuantitavas se requieren de acercamientos sólo dados por lentes macro.

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