Mechanically regularized Finite Element Stereo DIC: framework and application for structural testings

Abstract : The aim of this study is to measure, with stereo digital image correlation (DIC), the displacements and rotations at the boundary of a plate subjected to complex loadings. With classical DIC techniques, the measured field is the displacement of the upper skin only. The rotations are usually estimated a posteriori by numerical differentiation and filtering. Unfortunately additional uncertainties may arise with these steps. In this work, a finite element model is proposed to regularize a stereo FE-DIC measurement. For that, a complete framework of the DIC problem using the 3D displacement as primary unknown is developped. The approach can handle as many cameras as necessary and encompasses the calibration.
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Contributor : Pierre Naegelen <>
Submitted on : Tuesday, February 26, 2019 - 9:49:23 AM
Last modification on : Friday, January 10, 2020 - 9:09:47 PM

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  • HAL Id : hal-02049060, version 1

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Jean-Noël Périé, J.-E. Pierré, Jean-Charles Passieux. Mechanically regularized Finite Element Stereo DIC: framework and application for structural testings. iDICs 2016 Conference and Workshop SEM Fall Conference, Philadelphia, PA, USA, 2016, Philadelphia, United States. ⟨hal-02049060⟩

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