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Holographic interferometry as a method to detect welding failures on ribbed iron structures
(SPIE, 2013-07-22)
Metallic structures made of ribbed iron bars (ADN-420) are of common use in sheds and supporting structures. Usually, trusses are constructed with many pieces of ribbed iron bars, combined together through a welding process. ...
Dynamic analysis of a deforming membrane by digital holographic interferometry
(Elsevier, 2015-04)
In this work we performed an analysis of the deformations suffered by a membrane by means of the non-invasive nor destructive digital holographic interferometry technique (DHI). This technique consists in recording holograms ...
Characterization of drying paint coatings by dynamic speckle and holographic interferometry measurements
(Optical Society of America, 2016-05)
In this work we implemented dynamic speckle and holographic interferometry techniques to characterize the drying process of solvent-based paint coatings. We propose a simple way to estimate drying time by measuring speckle ...
Optical encryption using phase-shifting interferometry in a joint transform correlator
(Optical Society Of America, 2006-09)
We propose an optical encryption technique where the encrypted field and the decrypting key are obtained by three-step phase-shifting interferometry and registered as digital Fresnel holograms in a joint transform correlator ...
Extraction of dynamic speckle activity information from digital holograms
(Society of Photo-Optical Instrumentation Engineers, 2016-12)
In this work we show how dynamic speckle information can be extracted directly from digital holograms. This allows improving the analysis and characterization of dynamic phenomena by combining dynamic speckle with digital ...