Demodulation of Spatial Carrier Images: Performance Analysis of Several Algorithms Using a Single Image
TypeArticles dans des revues avec comité de lecture
Optical full-field techniques have a great importance in modern experimental mechanics. Even if they are reasonably spread among the university laboratories, their diffusion in industrial companies remains very narrow for several reasons, especially a lack of metrological performance assessment. A full-field measurement can be characterized by its resolution, bias, measuring range, and by a specific quantity, the spatial resolution. The present paper proposes an original procedure to estimate in one single step the resolution, bias and spatial resolution for a given operator (decoding algorithms such as image correlation, low-pass filters, derivation tools ...). This procedure is based on the construction of a particular multi-frequential field, and a Bode diagram representation of the results. This analysis is applied to various phase demodulating algorithms suited to estimate in-plane displacements.
Fichier(s) constituant cette publication
Cette publication figure dans le(s) laboratoire(s) suivant(s)
Visualiser des documents liés par titre, auteur, créateur et sujet.
Assessment of Digital Image Correlation Measurement Accuracy in the Ultimate Error Regime: Main Results of a Collaborative Benchmark AMIOT, Fabien; BORNERT, Michel; DOUMALIN, Pascal; DUPRE, Jean Christophe; FAZZINI, Marina; ORTEU, Jean José; POILANE, Christophe; ROBERT, Laurent; ROTINAT, René; TOUSSAINT, Evelyne; WATTRISSE, Bertrand; WIENIN, Jean Samuel (Wiley Publishing Ltd, 2013)We report on the main results of a collaborative work devoted to the study of the uncertainties associated with Digital image correlation techniques (DIC). More specifically, the dependence of displacement measurement ...
PETIT, J; CASTELNAU, Olivier; BORNERT, Michel; ZHANG, F. G.; HOFMANN, F; KORSUNSKY, A. M; FAURIE, D; LE BOURLOT, C; MICHA, Jean-Sébastien; ROBACH, O; ULRICH, O (CrossMark, 2015)A better understanding of the effective mechanical behavior of polycrystalline materials requires an accurate knowledge of the behavior at a scale smaller than the grain size. The X-ray Laue microdiffraction technique ...
ÖRS, Taylan; MICHA, Jean-Sébastien; GEY, Nathalie; MICHEL, Vincent; CASTELNAU, Olivier; GUINEBRETIERE, René (Wiley-Blackwell, 2018)The X-ray Laue microdiffraction (mLaue) technique has been establishing itself as a reliable means for microstrain analysis for the past few decades. One problem with this technique is that when the crystal size is ...
Influence of the microstructural changes and induced residual stresses on tensile properties of wrought magnesium alloy friction stir welds COMMIN, Loreleï; DUMONT, Myriam; ROTINAT, René; PIERRON, Fabrice; MASSE, Jean-Eric; BARRALLIER, Laurent (Elsevier, 2012)Friction stir welding induces a microstructural evolution and residual stresses that will influence the resulting mechanical properties. Friction stir welds produced from magnesium alloy hot rolled plates were studied. ...
Texture evolution in Nd:YAG-laser welds of AZ31 magnesium alloy hot rolled sheets and its influence on mechanical properties COMMIN, Loreleï; DUMONT, Myriam; ROTINAT, René; PIERRON, Fabrice; MASSE, Jean-Eric; BARRALLIER, Laurent (Elsevier, 2011)AZ31 hot rolled magnesium alloy presents a strong basal texture. Using laser beam welding (LBW) as a joining process induces high temperature gradients leading to major texture changes. EBSD was used to study the texture ...