Hybrid effects in thin ply carbon/glass unidirectional laminates: Accurate experimental determination and prediction
Source abstract
Abstract
Experimental results are presented which allow the hybrid effect to be evaluated accurately for thin ply carbon/epoxy–glass/epoxy interlayer hybrid composites. It is shown that there is an enhancement in strain at failure of up to 20% for very thin plies, but no significant effect for thicker plies. Hybrid specimens with thick carbon plies can therefore be used to measure the reference carbon/epoxy failure strain. The latter is significantly higher than the strain from all-carbon specimens in which there is an effect due to stress concentrations at the load introduction. Models are presented which illustrate the mechanisms responsible for the hybrid effect due to the constraint on failure at both the fibre and ply level. These results give a good understanding of how variability in the carbon fibre strengths can translate into hybrid effects in composite laminates.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Mechanical Behavior of Composites · Fiber-reinforced polymer composites · Epoxy Resin Curing Processes
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (34)
Show source-provided references
1. On the improvement of mechanical properties of composites by hybrid composition
2. Fibre hybridisation in polymer composites: a review10.1016/j.compositesa.2014.08.027 ↗
3. The hybrid effect – does it exist?10.1016/0010-4361(76)90273-1 ↗
4. Hybrid carbon and glass fibre composites10.1016/0010-4361(74)90107-4 ↗
5. Synergistic fiber strengthening in hybrid composites10.1007/BF00708266 ↗
6. Tensile strength of hybrid composites10.1007/BF00540846 ↗
7. A dynamic explanation of the hybrid effect10.1177/002199838101500504 ↗
8. Stress concentrations in a hybrid composite sheet10.1115/1.3167155 ↗
9. Manders · 1979
10. On the design of end tabs for quasi-static and fatigue testing of fibre-reinforced composites10.1002/pc.20564 ↗
11. Wisnom MR, Maheri MR. Tensile strength of unidirectional carbon fibre-epoxy from tapered specimens. In: 2nd European Conf. on composites testing and standardisation. Hamburg; September 1994. p. 239–47.
12. Suppression of delamination at ply drops in tapered composites by ply chamfering10.1177/0021998305053459 ↗
13. Czél G, Jalalvand M, Wisnom MR. Hybrid specimens eliminating stress concentrations in tensile and compressive testing of unidirectional composites. Composites Part A [submitted for publication].
14. Numerical modelling of the damage modes in UD thin carbon/ glass hybrid laminates10.1016/j.compscitech.2014.01.013 ↗
15. Fuller · 2015
16. Demonstration of pseudo-ductility in high performance glass–epoxy composites by hybridisation with thin-ply carbon prepreg10.1016/j.compositesa.2013.04.006 ↗
17. Demonstration of pseudo-ductility in unidirectional hybrid composites made of discontinuous carbon/epoxy and continuous glass/epoxy plies10.1016/j.compositesa.2015.01.019 ↗
18. Design and characterisation of advanced pseudo-ductile unidirectional thin-ply carbon/epoxy–glass/epoxy hybrid composites10.1016/j.compstruct.2016.02.010 ↗
19. Development of curvature during the cure of AS4/8552 [0/90] unsymmetric composite plates10.1016/S0266-3538(02)00195-1 ↗
20. Size effects in the testing of fibre-composite materials10.1016/S0266-3538(99)00053-6 ↗
21. Size effects in unnotched tensile strength of unidirectional and quasi-isotropic carbon/epoxy composites10.1016/j.compstruct.2007.06.002 ↗
22. The effect of fibre dispersion on initial failure strain and cluster development in unidirectional carbon/glass hybrid composites10.1016/j.compositesa.2014.12.001 ↗
23. Matrix cracks around fibre breaks and their effect on stress redistribution and failure development in unidirectional composites10.1016/j.compscitech.2015.01.002 ↗
24. Issues in strength models for unidirectional fibre-reinforced composites10.1016/j.compscitech.2015.04.002 ↗
25. Stress concentrations in an impregnated fibre bundle with random fibre packing10.1016/j.compscitech.2012.10.013 ↗
26. Tensile failure of fibrous composites10.2514/3.2699 ↗
27. Stress concentrations in hybrid unidirectional fibre-reinforced composites with random fibre packings10.1016/j.compscitech.2013.05.013 ↗
28. Kelly · 2000
29. Tensile properties of high strength polyacrylonitrile (PAN)-based and high modulus pitch-based hybrid carbon fibers-reinforced epoxy matrix composite10.1007/s10853-011-6101-8 ↗
30. The effect of gauge length on tensile strength and Weibull modulus of polyacrylonitrile (PAN)- and pitch-based carbon fibers10.1007/s10853-011-5832-x ↗
31. On the application of Weibull analysis to experimentally determined single fibre strength distributions10.1016/j.compscitech.2013.01.009 ↗
32. A dynamic explanation of the hybrid effect10.1177/002199838101500504 ↗
33. Numerical modeling of diffuse transverse cracks and induced delamination using cohesive elements10.1177/0954406212460974 ↗
34. Damage analysis of pseudo-ductile thin-ply UD hybrid composites – a new analytical method10.1016/j.compositesa.2014.11.006 ↗