scholarly journals Effects of hybridization and hybrid fibre dispersion on the mechanical properties of woven flax-carbon epoxy at low carbon fibre volume fractions

2018 ◽  
Vol 134 ◽  
pp. 28-38 ◽  
Author(s):  
Umeyr Kureemun ◽  
M. Ravandi ◽  
L.Q.N. Tran ◽  
W.S. Teo ◽  
T.E. Tay ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Carbon Fibre ◽  
Fibre Volume ◽  
Low Carbon ◽  
Volume Fractions ◽  
Hybrid Fibre

scholarly journals The Effect of Transcrystalline Interface on the Mechanical Properties of Polyethylene / Polyethylene Composites

2001 ◽  
Vol 10 (2) ◽  
pp. 096369350101000 ◽  
Author(s):  
D. Levitus ◽  
S. Kenig ◽  
M. Kazanci ◽  
H. Harel ◽  
G. Marom
Keyword(s):  
Mechanical Properties ◽  
Fibre Volume ◽  
Experimental Results ◽  
Volume Fractions ◽  
Wide Range ◽  
Longitudinal Strength ◽  
Transcrystalline Layer ◽  
Isothermal Crystallisation ◽  
Positive Effect ◽  
Polyethylene Composites

The effect of the transcrystalline layer on the longitudinal properties of unidirectional polyethylene/polyethylene (PE/PE) composites was studied. Two sets of PE/PE composites were prepared by quenching and by isothermal crystallisation, respectively, using a wide range of fibre volume fractions. Quenching and isothermal crystallisation were expected, respectively, to prevent or to induce generation of a highly ordered transcrystalline layer. The experimental results showed that isothermal crystallisation produced a substantial positive effect on both the longitudinal strength and modulus, which was attributed to transcrystallinity.

scholarly journals Improved Mechanical Properties of Copoly(Phthalazinone Ether Sulphone)s Composites Reinforced by Multiscale Carbon Fibre/Graphene Oxide Reinforcements: A Step Closer to Industrial Production

Polymers ◽  
2019 ◽  
Vol 11 (2) ◽  
pp. 237 ◽  
Author(s):  
Nan Li ◽  
Xiuxiu Yang ◽  
Feng Bao ◽  
Yunxing Pan ◽  
Chenghao Wang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Graphene Oxide ◽  
Carbon Fibre ◽  
Photoelectron Spectroscopy ◽  
Fibre Surface ◽  
Homogeneous Distribution ◽  
Matrix Interface ◽  
Atomic Force ◽  
Hybrid Fibre ◽  
Interlaminar Shear

The properties of carbon fibre (CF) reinforced composites rely heavily on the fibre-matrix interface. To enhance the interfacial properties of CF/copoly(phthalazinone ether sulfone)s (PPBES) composites, a series of multiscale hybrid carbon fibre/graphene oxide (CF/GO) reinforcements were fabricated by a multistep deposition strategy. The optimal GO loading in hybrid fibres was investigated. Benefiting from the dilute GO aqueous solution and repeated deposition procedures, CF/GO (0.5%) shows a homogeneous distribution of GO on the hybrid fibre surface, which is confirmed by scanning electron microscopy, atomic force microscope, and X-ray photoelectron spectroscopy, thereby ensuring that its PPBES composite possesses the highest interlaminar shear strength (91.5 MPa) and flexural strength (1886 MPa) with 16.0% and 24.1% enhancements, respectively, compared to its non-reinforced counterpart. Moreover, the incorporation of GO into the interface is beneficial for the hydrothermal ageing resistance and thermo-mechanical properties of the hierarchical composite. This means that a mass production strategy for enhancing mechanical properties of CF/PPBES by regulating the fiber-matrix interface was developed.

Mechanical Properties and Stress-Strain Behaviour of Hybrid Fibre-Reinforced Self-Compacting Concrete

2014 ◽  
Vol 984-985 ◽  
pp. 677-683
Author(s):  
T. Meena ◽  
G. Elangovan ◽  
R. Ganesh
Keyword(s):  
Mechanical Properties ◽  
Reinforced Concrete ◽  
Fly Ash ◽  
Fibre Reinforced Concrete ◽  
Self Compacting Concrete ◽  
Stress Strain ◽  
Volume Fractions ◽  
Strain Behaviour ◽  
Hybrid Fibre ◽  
Hardened State

Self-Compacting Concrete (SCC) is a highly flowable, self-levelling concrete. Just as in Fibre Reinforced Concrete (FRC), fibres can be incorporated into SCC also to get FRSCC. In the present study hybrid fibres namely, Polypropylene and hooked ended Steel fibres are incorporated in different volume fractions and their fresh and hardened state properties have been studied. Fly ash and Silica Fume obtained as waste from industries are used as replacement for cement, the replacement being 10% and 5% respectively. The behaviour of HFRSCC under compression, tension and flexure has been experimentally observed. The stress-strain behaviour of SCC and HFRSCC have also been studied by varying the combinations of volume fractions of hybrid fibres.

scholarly journals Characterization of continuous carbon fibre reinforced 3D printed polymer composites with varying fibre volume fractions

2021 ◽  
pp. 115033
Author(s):  
Khalid Saeed ◽  
Alistair McIlhagger ◽  
Eileen Harkin-Jones ◽  
Cormac McGarrigle ◽  
Dorian Dixon ◽  
...  
Keyword(s):  
Carbon Fibre ◽  
Polymer Composites ◽  
Fibre Volume ◽  
Volume Fractions ◽  
3D Printed

Mechanical properties of a carbon fabric-reinforced epoxy composite with carbon nanotubes and a flame retardant

2016 ◽  
Vol 7 (5) ◽  
pp. 630-644 ◽  
Author(s):  
Martin Kadlec ◽  
Robin Hron ◽  
Liberata Guadagno
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Electrical Conductivity ◽  
Carbon Fibre ◽  
Flame Retardant ◽  
Mechanical Test ◽  
Fibre Volume ◽  
Morphological Properties ◽  
Flame Resistance ◽  
Content Type

Purpose The purpose of this paper is to present the mechanical and morphological characterization of new multifunctional carbon fibre-reinforced composites (CFRCs) that are able to overcome two of the main drawbacks of aeronautical composite materials: reduced electrical conductivity and poor flame resistance. Multiwall carbon nanotubes and glycidyl POSS (GPOSS) were used to simultaneously enhance electrical conductivity and flame resistance. The effect of these two combined components on the mechanical and morphological properties of the manufactured CFRCs was analysed. Design/methodology/approach This paper describes the mechanical test results obtained for interlaminar shear strength, three-point bending, and tensile and fracture toughness in mode I tests. Carbon fibre-reinforced epoxy resin plates were manufactured in two series with blank resin and CNT+flame retardant GPOSS-enhanced resin. Findings The mechanical properties were decreased by no more than 10 per cent by combined influence of CNTs and GPOSS. Agglomerates of CNTs were observed using scanning electron microscopy. The agglomerates were large enough to be visible to the naked eye as black spots on the delaminated fracture surface. The decrease of the mechanical properties could be caused by these agglomerates or by a changed fibre volume content that was affected by the difficult infusion procedure due to high resin viscosity. Originality/value If we consider the benefit of CNTs as a nanofiller to increase electrical conductivity and the GPOSS as a component to increase the flame resistance of the resin, the decrease of strength seems to be insignificant.

scholarly journals Preparation of Solution Impregnated Continuous Carbon Fibre Reinforced Poly (Phthalazinone Ether Sulfone Ketone) Composites

2009 ◽  
Vol 18 (1) ◽  
pp. 096369350901800 ◽  
Author(s):  
Liang Zheng ◽  
Gong Xiong Liao ◽  
Xi Gao Jian
Keyword(s):  
Mechanical Properties ◽  
Carbon Fibre ◽  
Polymer Solution ◽  
Volume Fraction ◽  
Fibre Volume Fraction ◽  
Fibre Volume ◽  
Hot Press ◽  
Molding Method ◽  
Press Molding ◽  
Properties Of Composites

Continuous carbon fibre reinforced Poly (phthalazinone ether sulfone ketone) (PPESK) composites were prepared using a solution impregnation process and hot-press molding method. The effects of polymer solution viscosities on fibre impregnation, fibre volume fraction and thereby on mechanical properties of composites were studied. The results show that the fibre impregnation and fibre volume fraction decreased with increasing polymer solution viscosities, and the mechanical properties of composites mainly depended on the fibre volume content.

scholarly journals 3D geometric modelling of discontinuous fibre composites using a force-directed algorithm

2016 ◽  
Vol 51 (17) ◽  
pp. 2389-2406 ◽  
Author(s):  
LT Harper ◽  
CC Qian ◽  
R Luchoo ◽  
NA Warrior
Keyword(s):  
Experimental Data ◽  
Mechanical Properties ◽  
Current Model ◽  
Tensile Modulus ◽  
Fibre Volume ◽  
Fibre Bundles ◽  
Volume Fractions ◽  
Geometrical Modelling ◽  
Fibre Composites ◽  
Multidimensional Modelling

A geometrical modelling scheme is presented to produce representative architectures for discontinuous fibre composites, enabling downstream modelling of mechanical properties. The model generates realistic random fibre architectures containing high filament count bundles (>3k) and high (∼50%) fibre volume fractions. Fibre bundles are modelled as thin shells using a multidimensional modelling strategy, in which fibre bundles are distributed and compacted to simulate pressure being applied from a matched mould tool. Finite element simulations are performed to benchmark the in-plane mechanical properties obtained from the numerical model against experimental data, with a detailed study presented to evaluate the tensile properties at various fibre volume fractions and specimen thicknesses. Tensile modulus predictions are in close agreement (less than 5% error) with experimental data at volume fractions below 45%. Ultimate tensile strength predictions are within 4.2% of the experimental data at volume fractions between 40 and 55%. This is a significant improvement over existing 2D modelling approaches, as the current model offers increased levels of fidelity, capturing dominant failure mechanisms and the influence of out-of-plane fibres.

REMANIT 4439

Alloy Digest ◽  
1993 ◽  
Vol 42 (11) ◽  
Keyword(s):  
Mechanical Properties ◽  
Corrosion Resistance ◽  
Stainless Steels ◽  
Crevice Corrosion ◽  
Heat Treating ◽  
Corrosion Resistant Steel ◽  
Resistant Steel ◽  
Low Carbon ◽  
Corrosion Resistant ◽  
Mechanical Properties And Corrosion

Abstract REMANIT 4439 is a highly corrosion resistant steel with low carbon content, an addition of nitrogen to enhance both mechanical properties and corrosion resistance, and higher molybdenum than most stainless steels to resist pitting and crevice corrosion in chloride media. This datasheet provides information on composition, physical properties, and elasticity. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-556. Producer or source: Thyssen Stahl AG.

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