@article{9e191e89-edab-4b6f-ac10-7c453cbd0b56,
  abstract     = {{To study adhesion in flexible laminates, standardised peel tests are commonly used where macroscopic measurements, e.g. peel force versus peel arm displacement, are extracted. However, insights into the adhesion mechanisms at the microscopic scale are limited. This study has developed a framework for determining peel arm geometry parameter evolution and deformation in packaging material laminates. High-resolution, four-dimensional (3D space + time) data were generated via fast x-ray micro-tomography of in-situ peel tests at a synchrotron facility. Filtering, segmentation and curve-fitting steps are used to process and analyse the peel test image data and are combined with a previously established numerical framework to determine the evolution of peel arm curvature, peel front position and peel arm thickness. Full-field peel arm displacements, rotations and strains are calculated using Augmented Lagrangian Digital Volume Correlation (ALDVC). It is shown that the developed framework can trace large changes in peel arm geometry and provide the evolution of strain near the peel front and relate this to the peel force. This work has provided a new methodology for investigating the microscale mechanisms of peel testing. In the future, this methodology could enable improved understanding of adhesion and better interpretation of macroscale measurements to provide better quantitative input to models of packaging material laminates.}},
  author       = {{Ivarsson, Niklas and Hall, Stephen and Toft, Nils and Pettersson, Simon and Hallberg, Håkan and Schlepütz, Christian M. and Novak, Vladimir and Engqvist, Jonas}},
  issn         = {{2949-673X}},
  language     = {{swe}},
  publisher    = {{Elsevier}},
  series       = {{Tomography of Materials and Structures}},
  title        = {{In-situ peel test analysis via synchrotron tomography and DVC}},
  url          = {{http://dx.doi.org/10.1016/j.tmater.2026.100084}},
  doi          = {{10.1016/j.tmater.2026.100084}},
  volume       = {{11}},
  year         = {{2026}},
}