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https://hdl.handle.net/20.500.13091/5401
Title: | Material representativeness of a polymer matrix doped with nanoparticles as the random speckle pattern for digital volume correlation of fibre-reinforced composites | Authors: | Chatziathanasiou, T. Demir, O. Soete, J. Breite, C. Mehdikhani, M. Diehl, M. Swolfs, Y. |
Keywords: | Mechanical properties particle-reinforcement Rheological properties XCT analysis Computerized tomography Damage detection Fiber reinforced plastics Pattern recognition Polymer matrix composites Speckle 3D strain Digital volume correlations Fibre-reinforced composite Particle reinforcement Polymer matrices Rheological property Speckle patterns Strain mapping Tomographic imaging XCT analyse Scanning electron microscopy |
Publisher: | Elsevier Ltd | Abstract: | Combining tomographic imaging with digital volume correlation allows in-situ 3D strain mapping, leading to a quantitative assessment of damage mechanisms and associated material properties in structural materials. Being based on pattern recognition, digital volume correlation is well-suited for materials with intrinsic and stable microstructural heterogeneity, such as certain biological tissues. Unfortunately, conventional polymers and fibre-reinforced polymer composites lack the required heterogeneity. Recently, solutions like doping the polymers with particles have been explored to overcome this limitation. The particles embedded in the polymer matrix provide a random, volumetric speckle pattern, acting as displacement trackers for the digital volume correlation algorithm. However, the particles might influence the mechanical and rheological behaviour of the polymer, which is detrimental in investigations of the composite material properties. This paper investigates the mechanical, mechanistic, and rheological representativeness of an epoxy doped with two types of sub-micrometre particles optimised for digital volume correlation. Since particle dispersion is considered a key driver for representativeness, we simultaneously quantitatively assess the dispersion by combining scanning electron microscopy and X-ray computed tomography. © 2024 Elsevier Ltd | URI: | https://doi.org/10.1016/j.compositesb.2024.111381 https://hdl.handle.net/20.500.13091/5401 |
ISSN: | 1359-8368 |
Appears in Collections: | Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collections WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collections |
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