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A mechanics-informed framework for fiber length selection in discontinuous CFRTP: Integrating impact performance and cascade recycling
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DOI:10.1016/j.compositesb.2026.114074.png)
Abstract
En 中文
• Impact performance of thin-ply SMC does not saturate at the static critical length of approximately 20 mm, but continues to increase at 30 mm. • Tape length, fiber orientation, and multi-material architecture provide distinct architecture-dependent contributions to impact response. • Morphology-informed RVE modeling using measured tape geometry reduces prediction error from approximately 10–16 % to below 3 % and enables FE simulations with deviations below 15 % for the investigated systems. • A system-specific fiber length design window is established by integrating impact performance, manufacturability, and recycling constraints. • A cascade recycling strategy from UD to SMC, NWF, and CPT is proposed, identifying fiber lengths approaching 30 mm as a practical design point for balancing impact performance and downstream recycling compatibility in thin-ply SMC systems.
Keywords:
Discontinuous carbon fiber reinforced thermoplastic
Sheet molding compound
Non-woven fabric
Impact characteristics
Multiscale modeling
Fiber length selection
Cascade recycling
Journal
IF:
14.2
Papers:
1.2W
Citations:
8.9W
