Standard uncertainty calculation by Monte Carlo technique for topography and hole-filed displacement measurement means ESPI
DOI:
https://doi.org/10.21640/ns.v5i9.157Keywords:
speckle interferometry, ESPI, standard uncertainty, Monte Carlo techniqueAbstract
Is unique the advantage of interferometric techniques based in speckle phenomena. A Hole field measurement in mechanical elements can be obtained with height precision when they are under deformation. However, when divergent illumination is used, we can see that topography measurement is a function of the shape of the object. Therefore, before evaluating the mechanical deformations by ESPI with divergent illumination is necessary to know the topography of the Parra-Michel, J. y A. Martínez Revista Electrónica Nova Scientia, Nº 9 Vol. 5 (1), 2012. ISSN 2007 - 0705. pp: 51 - 75 - 53 - object. The estimated standard uncertainty of the measurements of displacement fields must consider uncertainty measurement of the topography that spreads due to generalized law of propagation of uncertainty. This work we show the use of Monte Carlo technique to calculate the standard uncertainty for the measurement of displacement fields and surface topography using the technique of interferometry electronic speckle pattern with dual illumination and divergentDownloads
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