Crack Analysis in Mudbricks under Compression Using Specific Development of Stereo-Digital Image Correlation

Valery Valle (1) , L. Laou (2) , I. Léandry , S. Yotte (3) , S. Rossignol (4) , S. Hedan (5) , B. Derory (6)

1 PEM - Photomécanique et analyse expérimentale en mécanique des solides [Institut Pprime]
2 SPCTS - Science des Procédés Céramiques et de Traitements de Surface
3 GEMH - Groupe d'Etudes des Matériaux Hétérogènes
4 CARE - IRCELYON-Catalytic and Atmospheric Reactivity for the Environment
5 IC2MP [Poitiers] - Institut de chimie des milieux et matériaux de Poitiers [UMR 7285]
6 UNILIM - Université de Limoges

This study reports on the stereo digital image correlation (SDIC) method and its extension in the case of fracture analysis. The aim of this work is to propose an improvement to the SDIC method for solving uncertainty problems in the vicinity of a discontinuous displacement field (cracks). It was developed using the classical minimization process, and the kinematical displacement field was enriched by a Heaviside function (H-SDIC). After a short presentation of the entire process used, some experimental tests were performed to demonstrate the performances of this new algorithm. Finally, an application of fracture detection and displacement field measurement on mudbricks is shown, thus validating the efficiency and the robustness of the proposed method

Mots clés: Stereo correlation; Digital image correlation; Fracture; Mudbrick; Full field measurement; Cracks

Domaines: Catalyse

Valery Valle, L. Laou, I. Léandry, S. Yotte, S. Rossignol, et al.. Crack Analysis in Mudbricks under Compression Using Specific Development of Stereo-Digital Image Correlation. Experimental Mechanics, 2018, 58 (3), pp.475-486. ⟨10.1007/s11340-017-0363-2⟩. ⟨hal-02019240⟩