Debonding quantification via Digital Volume Correlation. Application to a mortar reinforcement pull-out

In composite materials, the debonding phenomenon is challenging to quantify directly via standard tests. This study applies Finite Element-based Digital Volume Correlation (FE-DVC) to investigate debonding between a mortar matrix and a reinforcement during an in-situ pull-out test within an X-ray tomograph. A 3D mesh replicates the foundation and reinforcement geometry. By splitting the nodes at the interface, the reinforcement kinematics is better captured, and debonding is assessed with displacement jumps.