Notch-sensitivity of hybrid carbon-fibre/self-reinforced polypropylene composites
Source abstract
Abstract
Abstract Hybrid composites combining brittle and ductile reinforcing fibres can be designed to have pseudo-ductile behaviour by controlling their failure mechanisms. The recently developed carbon-fibre/self-reinforced polypropylene (SRPP) hybrids have demonstrated a unique combination of stiffness (7 GPa), toughness (>6% strain) and density (±1000 kg/m³). Here, the influence of a circular notch on their failure mechanisms is investigated. Discontinuous carbon-fibre/polypropylene composites retained 69% of the gross strength and 83% of the net strength. The strength retention of SRPP was highly influenced by the processing parameters, and a notch-insensitive composite could be produced. Pseudo-ductility was obtained even with the notched hybrids. Hybrids that do not achieve the optimal ductility, still exhibit high gross and net strength retentions and can be classified as notch-insensitive. These results illustrate the significant potential of this new hybrid composite for applications with notches or holes.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Mechanical Behavior of Composites · Fiber-reinforced polymer composites · Natural Fiber Reinforced Composites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (31)
Show source-provided references
1. The notch sensitivity of polymeric materials10.1002/app.1976.070200814 ↗
2. Notched strength of composite laminates: predictions and experiments—a review10.1177/073168448500400102 ↗
3. Scaling effects in notched composites10.1177/0021998309339865 ↗
4. Notch sensitivity and damage mechanisms of glass mat reinforced polypropylene10.1002/pc.10259 ↗
5. Notched behaviour of discontinuous carbon fibre composites: comparison with quasi-isotropic non-crimp fabric10.1016/j.compositesa.2010.12.001 ↗
6. Notch sensitivity of short and 2D plain woven glass fibres reinforced with different polymer matrix composites10.1177/0731684417702529 ↗
7. An experimental investigation into the tensile strength scaling of notched composites10.1016/j.compositesa.2006.07.008 ↗
8. Effect of ply thickness on fracture of notched composite laminates10.2514/2.355 ↗
9. Pilkey · 2005
10. Failure behaviour of self-reinforced polypropylene at and below room temperature10.1016/j.compositesa.2014.06.003 ↗
11. The influence of weave architecture on the mechanical properties of self-reinforced polypropylene10.1016/j.compositesa.2013.06.015 ↗
12. Compression and tensile properties of self-reinforced poly(ethylene terephthalate)–Composites10.1016/j.polymertesting.2012.11.002 ↗
13. Hot compaction of woven nylon 6,6 multifilaments10.1002/app.22771 ↗
14. The brittle-to-ductile transition in tensile and impact behavior of hybrid carbon fibre/self-reinforced polypropylene composites10.1016/j.compositesa.2018.02.034 ↗
15. Introducing ductility in hybrid carbon fibre/self-reinforced composites through control of the damage mechanisms10.1016/j.compstruct.2015.04.069 ↗
16. Discontinuities as a way to influence the failure mechanisms and tensile performance of hybrid carbon fiber/self-reinforced polypropylene composites10.1016/j.compositesa.2018.01.020 ↗
17. Demonstration of pseudo-ductility in high performance glass/epoxy composites by hybridisation with thin-ply carbon prepreg10.1016/j.compositesa.2013.04.006 ↗
18. Damage analysis of pseudo-ductile thin-ply UD hybrid composites - a new analytical method10.1016/j.compositesa.2014.11.006 ↗
19. Mechanical and open hole tensile properties of self-reinforced PET composites with recycled PET fiber reinforcement10.1002/app.43682 ↗
20. Notched strength of long- and short-fibre reinforced polyamide10.1016/0266-3538(92)90121-I ↗
21. The effect of fibre length on fracture toughness and notched strength of short carbon fibre/epoxy composites10.1016/0010-4361(94)90096-5 ↗
22. Effects of hole stress concentration and its mitigation on the tensile strength of sheet moulding compound (SMC-R50) composites10.1016/0010-4361(88)90004-3 ↗
23. Shirrell CD, Onachuk MG. Influence of Mold Coverage upon the Notch Strength of R25 Sheet Molding Compound. Composite Materials: Fatigue and Fracture, ASTM STP 9071986. p ..
24. Notched behavior of prepreg-based discontinuous carbon fiber/epoxy systems10.1016/j.compositesa.2008.12.012 ↗
25. Effect of hybridization on open-hole tension properties of woven Kevlar/glass fiber hybrid composite laminates
26. Tensile strength of notched woven fabric hybrid glass, carbon/epoxy composite laminates10.1177/1528083712456055 ↗
27. Pseudo-ductility and reduced notch sensitivity in multi-directional all-carbon/epoxy thin-ply hybrid composites10.1016/j.compositesa.2017.10.028 ↗
28. Fibre hybridisation in polymer composites: a review10.1016/j.compositesa.2014.08.027 ↗
29. Recent advances in fibre-hybrid composites: materials selection, opportunities and applications10.1080/09506608.2018.1467365 ↗
30. The influence of process parameters on the properties of hot compacted self-reinforced polypropylene composites10.1016/j.compositesa.2014.05.022 ↗
31. Healing of stress-whitening in polyethylene and polypropylene at or below room temperature10.1002/pen.11310 ↗