3D printed continuous fibre-reinforced composites: Bio-inspired microstructures for improving the translaminar fracture toughness
Source abstract
Abstract
Abstract Translaminar fracture toughness is a vital property governing the notch sensitivity and damage tolerance of composites. Nature has shown that incorporating material transitions can increase toughness significantly. This work presents finite element models demonstrating that such transitions can indeed increase the translaminar fracture toughness. The designed microstructures were then 3D printed using continuous glass and carbon fibres. The specimens consisted primarily of glass fibres, but with local carbon fibre strips. A new compact tension specimen with a side groove was designed to ensure proper failure. When the strips were sufficiently large, toughness improvements of 20–60% were found after the crack had grown through the strips. These results reveal a powerful strategy for locally increasing the toughness in areas where it is needed the most.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Additive Manufacturing and 3D Printing Technologies · Bone Tissue Engineering Materials · Silk-based biomaterials and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (35)
Show source-provided references
1. Translaminar fracture toughness testing of composites: a review10.1016/j.polymertesting.2012.01.002 ↗
2. Recent advances in fibre-hybrid composites: materials selection, opportunities and applications10.1080/09506608.2018.1467365 ↗
3. Engineering the translaminar fracture behaviour of thin-ply composites10.1016/j.compscitech.2016.06.002 ↗
4. An analytical model for the translaminar fracture toughness of fibre composites with stochastic quasi-fractal fracture surfaces10.1016/j.jmps.2014.02.001 ↗
5. Determination of the mode I crack resistance curve of polymer composites using the size-effect law10.1016/j.engfracmech.2013.10.021 ↗
6. Translaminar fracture toughness of interply hybrid laminates under tensile and compressive loads10.1016/j.compscitech.2017.02.029 ↗
7. Thickness-dependence of the translaminar fracture toughness: experimental study using thin-ply composites10.1016/j.compositesa.2016.05.031 ↗
8. Standard test methods for delamination resistance of composite materials: current status10.1023/A:1008869811626 ↗
9. Mode I interlaminar fracture of carbon epoxy laminates: effects of ply thickness10.1016/j.compositesa.2016.09.009 ↗
10. Large scale fiber bridging in mode I intralaminar fracture. An embedded cell approach10.1016/j.compscitech.2016.01.025 ↗
11. Pseudo-ductility and reduced notch sensitivity in multi-directional all-carbon/epoxy thin-ply hybrid composites10.1016/j.compositesa.2017.10.028 ↗
12. The conflicts between strength and toughness10.1038/nmat3115 ↗
13. Bioinspired structural materials10.1038/nmat4089 ↗
14. Bio-inspired laminate design exhibiting pseudo-ductile (graceful) failure during flexural loading10.1016/j.compositesa.2013.07.008 ↗
15. Exploiting nacre-inspired crack deflection mechanisms in CFRP via micro-structural design10.1016/j.compscitech.2017.08.023 ↗
16. Bioinspired design criteria for damage-resistant materials with periodically varying microstructure10.1002/adfm.201100443 ↗
17. The mechanics of tessellations – bioinspired strategies for fracture resistance10.1039/C5CS00598A ↗
18. Improvement of fatigue life by compliant and soft interlayers10.1016/j.scriptamat.2015.10.021 ↗
19. Improving strength and toughness of materials by utilizing spatial variations of the yield stress10.1016/j.actamat.2016.09.044 ↗
20. Fibre hybridisation in polymer composites: a review10.1016/j.compositesa.2014.08.027 ↗
21. Mechanical behavior of hybrid glass/steel fiber reinforced epoxy composites10.3390/polym9040151 ↗
22. The importance of translaminar fracture toughness for the penetration impact behaviour of woven carbon/glass hybrid composites10.1016/j.compositesa.2017.09.009 ↗
23. A hybrid composite fuselage design with integral crack arresters
24. An assessment of buffer strips for improving damage tolerance of composite laminates10.1177/002199838001400105 ↗
25. Modeling and Assessment of Integral Crack Arrest Zones in CFRP Laminates
26. A review on additive manufacturing of polymer-fiber composites10.1016/j.compstruct.2017.08.088 ↗
27. Design framework for multifunctional additive manufacturing: coupled optimization strategy for structures with embedded functional systems
28. 3D printing of polymer matrix composites: a review and prospective10.1016/j.compositesb.2016.11.034 ↗
29. Intralaminar fracture toughness characterisation of woven composite laminates. Part I: design and analysis of a compact tension (CT) specimen10.1016/j.engfracmech.2014.08.012 ↗
30. Translaminar fracture toughness: the critical notch tip radius of 0° plies in CFRP10.1016/j.compscitech.2011.10.006 ↗
31. Stress concentrations in an impregnated fibre bundle with random fibre packing10.1016/j.compscitech.2012.10.013 ↗
32. Chamis · 1983
33. Effect of processing conditions on the bonding quality of FDM polymer filaments10.1108/13552540810862028 ↗
34. Anisotropic mechanical property variance between ASTM D638-14 type i and type iv fused filament fabricated specimens10.1016/j.polymertesting.2018.04.029 ↗
35. Intralaminar fracture toughness characterisation of woven composite laminates. Part II: experimental characterisation10.1016/j.engfracmech.2014.08.011 ↗