General information
Organisation
The French Alternative Energies and Atomic Energy Commission (CEA) is a key player in research, development and innovation in four main areas :
• defence and security,
• nuclear energy (fission and fusion),
• technological research for industry,
• fundamental research in the physical sciences and life sciences.
Drawing on its widely acknowledged expertise, and thanks to its 16000 technicians, engineers, researchers and staff, the CEA actively participates in collaborative projects with a large number of academic and industrial partners.
The CEA is established in ten centers spread throughout France
Reference
SL-DES-25-0166
Thesis topic details
Category
Engineering science
Thesis topics
Development of multiscale and multiview correlation techniques for monitoring large-scale dynamic tests
Contract
Thèse
Job description
Experimental data obtained on large-scale specimens plays an important role in the study of structural integrity. Detailed interpretations of these tests require extensive instrumentation of the models. In addition to conventional data acquisition systems, digital image correlation (DIC) techniques can be used to measure displacement fields and extract quantities of interest (e.g. damage field). The aim of this thesis is to develop a multi-view, multi-scale digital image correlation (DI2M) technique for monitoring large-scale dynamic tests. We will focus on the behavior of reinforced concrete structures subjected to dynamic loading. The finite element model updating (FEMU) technique will be used to identify non-linear phenomena in the process zone around cracks. FEMU will be coupled with DI2M analyses, which can also be used to measure boundary conditions. The use of DI techniques to calculate acceleration fields will also be studied. A numerical framework will be proposed for performing modal analysis based on calculated fields. Ultimately, these tools could be integrated into a test/calculation dialogue procedure, providing precise information on the mechanical properties of structural elements and their evolution (e.g. damage) induced by seismic loading.
University / doctoral school
Sciences Mécaniques et Energétiques, Matériaux et Géosciences (SMEMaG)
Thesis topic location
Site
Saclay
Requester
Position start date
01/10/2025
Person to be contacted by the applicant
SEYEDI Darius
darius.seyedi@cea.fr
CEA
DES/DM2S/SEMT/EMSI
CEA Paris-Saclay
91191 Gif-sur-Yvette
01 69 08 66 54
Tutor / Responsible thesis director
SEYEDI Darius
darius.seyedi@cea.fr
CEA
DES/DM2S/SEMT/EMSI
CEA Paris-Saclay
91191 Gif-sur-Yvette
01 69 08 66 54
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