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of 147
pro vyhledávání: '"Guillermo H. Kaufmann"'
Publikováno v:
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Scipedia SL
The fracture behaviour of a four-point bend surface-coated ceramic specimen with a through-the-thickness crack was experimentally investigated. Speckle photography was used to measure opening displacements over the specimen surface and across the cra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f0a78f091127321f5287d1eca92396cb
https://www.scipedia.com/public/Barbero_et_al_1990a
https://www.scipedia.com/public/Barbero_et_al_1990a
Autor:
Francisco E. Veiras, Alejandro Federico, Guillermo H. Kaufmann, Ana Laura Vadnjal, Arturo Bianchetti, Pablo Etchepareborda
Publikováno v:
Optics and Lasers in Engineering. 80:63-72
Spiral interferometry can be used as a solution to the problem of sign ambiguity presented in the conventional speckle pattern interferometric technique when the optical phase needs to be reconstructed from a single closed fringe system. Depressions
Publikováno v:
Optics and Lasers in Engineering. 73:16-21
Recently, a phase evaluation method was proposed to measure nanometric displacements by means of digital speckle pattern interferometry when the phase change introduced by the deformation is in the range [0,π) rad. This method is based on the evalua
Autor:
Arturo Bianchetti, Pablo Etchepareborda, Francisco E. Veiras, Guillermo H. Kaufmann, Ana Laura Vadnjal, Alejandro Federico
Publikováno v:
Applied optics. 56(3)
In digital speckle pattern interferometry, fringeless speckle pattern interferograms are obtained when the object field deformation is insufficient to produce local phase variations higher than 2π. Therefore, the use of the well-known phase recovery
Publikováno v:
Optics and Lasers in Engineering. 50:170-175
A phase evaluation method was recently proposed to measure nanometric displacements by means of digital speckle pattern interferometry when the phase change introduced by the deformation is in the range [ 0 , π ) rad . To evaluate the phase change,
Publikováno v:
Optics and Lasers in Engineering. 46:230-235
This paper presents a feasibility study to assess whether digital speckle pattern interferometry could be used as a possible technique to investigate the adhesive performance of coatings. The approach is based on the measurement of the deflections pr
Publikováno v:
Optics Communications. 275:38-41
When the Hilbert transform method is used to recover the phase distribution in temporal speckle pattern interferometry, the influence of the fluctuations of the bias and the modulation intensities on the calculated phase must be driven heuristically.
Publikováno v:
Optics and Lasers in Engineering. 45:690-694
A lockin method which takes into account the contribution of several modes from the Fourier spectrum generated by a heat load following a triangular waveform is used in temporal speckle pattern interferometry (TSPI) for the nondestructive detection o
Publikováno v:
Optics and Lasers in Engineering. 45:723-729
The 1D empirical mode decomposition method is applied to reduce speckle noise in the correlation fringes produced in digital speckle pattern interferometry. This method is based on the decomposition of a signal in a sum of well-behaved fast and slow
Autor:
Alejandro Federico, Pablo Etchepareborda, Arturo Bianchetti, Francisco E. Veiras, Ana Laura Vadnjal, Guillermo H. Kaufmann
Three real-time methods for object-phase recovery are implemented and compared in temporal speckle-pattern interferometry. Empirical mode and intrinsic time-scale decompositions are used and compared as real-time nonstationary and nonlinear filtering
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eec5511f371d70dadd2caf940da2dbdc
https://www.osapublishing.org/ao/abstract.cfm?uri=ao-54-25-7663
https://www.osapublishing.org/ao/abstract.cfm?uri=ao-54-25-7663