Baoxing Wang , Yusen Li , Adragna Pierre-Antoine , Montay Guillaume , Guang Yang , Siyu Zhou
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Fused granular fabrication of natural fiber reinforced composites: Experimental and numerical analysis of flax/PP structures
Flax fiber‐reinforced polypropylene (Flax/PP) composites were fabricated via fused granular fabrication (FGF) 3D printing at various raster orientations (0°, 45°, 90°, and ±45°) and evaluated by tensile testing with digital image correlation (DIC). The ±45° printed specimens achieved the highest tensile strength (∼12.7 MPa) and stiffness, whereas the 90° specimens showed the poorest performance due to weak inter-layer bonding. Scanning electron microscopy revealed distinct fracture modes (fiber pull-out at 0° vs. layer delamination at 90°), explaining the strength differences. Finite element modeling was performed to simulate stress distribution and failure, and the predictions showed strong agreement with experimental results (error ≤0.18). These findings demonstrate that a ±45° raster orientation optimizes interfacial adhesion and load distribution, providing the best overall tensile performance. The study highlights the effectiveness of combining FGF printing, full-field strain measurement, and simulation to inform optimal printing strategies for Flax/PP composites.
期刊介绍:
Polymer is an interdisciplinary journal dedicated to publishing innovative and significant advances in Polymer Physics, Chemistry and Technology. We welcome submissions on polymer hybrids, nanocomposites, characterisation and self-assembly. Polymer also publishes work on the technological application of polymers in energy and optoelectronics.
The main scope is covered but not limited to the following core areas:
Polymer Materials
Nanocomposites and hybrid nanomaterials
Polymer blends, films, fibres, networks and porous materials
Physical Characterization
Characterisation, modelling and simulation* of molecular and materials properties in bulk, solution, and thin films
Polymer Engineering
Advanced multiscale processing methods
Polymer Synthesis, Modification and Self-assembly
Including designer polymer architectures, mechanisms and kinetics, and supramolecular polymerization
Technological Applications
Polymers for energy generation and storage
Polymer membranes for separation technology
Polymers for opto- and microelectronics.