Mesh-Based Shape Measurements with Stereocorrelation Principle and First Results

Lorène Dubreuil (1) , John-Eric Dufour (2) , Yann Quinsat (1) , François Hild (2)

1 LURPA - Laboratoire Universitaire de Recherche en Production Automatisée
2 LMT - Laboratoire de Mécanique et Technologie

A mesh-based framework is developed by extending global stereocorrelation techniques to faceted surfaces with three-noded elements. A two-step self-calibration procedure is followed to determine the projection matrices of the stereo-rig and to update the nominal surface model to match the surface of interest. To prove the feasibility of mesh-based stereocorrelation, two different test parts are analyzed with the present techniques and compared to already validated optical procedures.

Mots clés: Calibration; DIC; finite element discretization; photogrammetry; stereocorrelation

Domaines: Génie mécanique [physics.class-ph]

Lorène Dubreuil, John-Eric Dufour, Yann Quinsat, François Hild. Mesh-Based Shape Measurements with Stereocorrelation Principle and First Results. Experimental Mechanics, 2016, 56, pp.1231-1242. ⟨10.1007/s11340-016-0158-x⟩. ⟨hal-01310297⟩