Check out recently published paper:
- Wilfried Troalen, Antoine Le Duigou, Christophe Baley, Size effect of natural fibre reinforcement on mechanical performance for the development of thin bio-composite laminates: do fibre bundles represent a limitation?, Composites Part A: Applied Science and Manufacturing, 2025, 109245, ISSN 1359-835X, https://doi.org/10.1016/j.compositesa.2025.109245.
Excited to share insights from our recent study on flax/PPMA biocomposites and the impact of laminate thickness on tensile performance. 🌱 Unlike the classical scale effect observed in synthetic composites, we found a critical threshold (~550 µm) below which tensile strength actually declines by up to 20%. Using cross-sectional analyses and Digital Image Correlation, we revealed how flax fibre bundles, rather than elementary fibres, dominate behaviour at thinner scales. This highlights the need to rethink scale effect theory for natural fibre composites and emphasises the importance of testing materials at their final object scale. A step forward in understanding sustainable biocomposites for advanced applications!
