The Influence of Through-the-Thickness Binder Yarn Count on Fibre Volume Fraction, Crimp and Damage Tolerance within 3D Woven Carbon Fibre Composites

2009 ◽  
Vol 17 (5) ◽  
pp. 303-312
Author(s):  
R.S. King ◽  
G. Stewart ◽  
A.T. McIlhagger ◽  
J.P. Quinn
Keyword(s):  
Carbon Fibre ◽  
Volume Fraction ◽  
Damage Tolerance ◽  
Fibre Volume Fraction ◽  
Fibre Volume ◽  
Fibre Composites ◽  
Yarn Count ◽  
Carbon Fibre Composites

scholarly journals Thermal conductivity of textile reinforcements for composites

2018 ◽  
Vol 1 ◽  
pp. 251522111775115 ◽  
Author(s):  
Yue El-Hage ◽  
Simon Hind ◽  
François Robitaille
Keyword(s):  
Thermal Conductivity ◽  
Carbon Fibre ◽  
Volume Fraction ◽  
Fibre Volume Fraction ◽  
Three Dimensional ◽  
Fibre Volume ◽  
Published Data ◽  
Manufacturing Processes ◽  
Composites Manufacturing ◽  
The Relationship

Thermal conductivity data for dry carbon fibre fabrics are required for modelling heat transfer during composites manufacturing processes; however, very few published data are available. This article reports in-plane and through-thickness thermal conductivities measured as a function of fibre volume fraction ( Vf) for non-crimp and twill carbon reinforcement fabrics, three-dimensional weaves and reinforcement stacks assembled with one-sided carbon stitch. Composites made from these reinforcements and glass fibre fabrics are also measured. Clear trends are observed and the effects of Vf, de-bulking and vacuum are quantified along with orthotropy ratios. Limited differences between the conductivity of dry glass and carbon fibre fabrics in the through-thickness direction are reported. An unexpected trend in the relationship between that quantity and Vf is explained summarily through simple simulations.

scholarly journals Flexural Properties of Wet-Laid Hybrid Nonwoven Recycled Carbon and Flax Fibre Composites in Poly-Lactic Acid Matrix

Aerospace ◽  
2018 ◽  
Vol 5 (4) ◽  
pp. 120 ◽  
Author(s):  
Barbara Tse ◽  
Xueli Yu ◽  
Hugh Gong ◽  
Constantinos Soutis
Keyword(s):  
Lactic Acid ◽  
Carbon Fibre ◽  
Volume Fraction ◽  
Flexural Modulus ◽  
Fibre Volume Fraction ◽  
Fibre Volume ◽  
Flax Fibre ◽  
Morphological Properties ◽  
Poly Lactic Acid ◽  
Flexural Properties

Recycling carbon fibre is crucial in the reduction of waste from the increasing use of carbon fibre reinforced composites in industry. The reclaimed fibres, however, are usually short and discontinuous as opposed to the continuous virgin carbon fibre. In this work, short recycled carbon fibres (rCF) were mixed with flax and poly-lactic acid (PLA) fibres acting as the matrix to form nonwoven mats through wet-laying. The mats were compression moulded to produce composites with different ratios of rCF and flax fibre in the PLA matrix. Their flexural behaviour was examined through three-point-bending tests, and their morphological properties were characterised with scanning electron and optical microscopes. Experimental data showed that the flexural properties increased with higher rCF content, with the maximum being a flexural modulus of approximately 14 GPa and flexural strength of 203 MPa with a fibre volume fraction of 75% rCF and 25% flax fibre. The intimate mixing of the fibres contributed to a lesser reduction of flexural properties when increasing the flax fibre content.

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 Post-impact damage tolerance of natural fibre-reinforced sheet moulding compound

2020 ◽  
Vol 29 ◽  
pp. 2633366X2096793
Author(s):  
Harish K Patel ◽  
Ton Peijs
Keyword(s):  
Flexural Strength ◽  
Volume Fraction ◽  
Damage Tolerance ◽  
Fibre Volume Fraction ◽  
Natural Fibre ◽  
Fibre Volume ◽  
Hemp Fibres ◽  
Moulding Compound ◽  
Post Impact ◽  
Sheet Moulding Compound

Natural fibre composites are of interest for a wide range of semi-structural applications in the building, construction and automotive sector. For a number of these applications, the evaluation of performance degradation after impact is of some relevance. The present work focused on the influence of fibre volume fraction and fibre surface treatment on the residual load-bearing capability of hemp fibre-reinforced sheet moulding compound (H-SMC) after non-penetrating impacts. Post-impact flexural strength and stiffness of H-SMC decreased linearly with increasing impact energy. At higher impact energy levels, the residual flexural strength of H-SMC improved with increasing fibre volume fraction. However, for the same amount of absorbed energy, the residual strength or damage tolerance capability of glass fibre-reinforced sheet moulding compound was about twice that of H-SMC. Composites based on surface treated hemp fibres showed a slight improvement in residual flexural strength, particularly for systems based on hemp fibres treated with a combined alkaline and silane surface treatment. Surface treated systems showed improved levels of adhesion and increased levels of energy absorption through potential mechanisms such as debonding, pull-out or fibre fibrillation.

Recent developments in the processing of waste carbon fibre for thermoplastic composites – A review

2019 ◽  
Vol 54 (14) ◽  
pp. 1925-1944 ◽  
Author(s):  
Muhammad Furqan Khurshid ◽  
Martin Hengstermann ◽  
Mir Mohammad Badrul Hasan ◽  
Anwar Abdkader ◽  
Chokri Cherif
Keyword(s):  
Carbon Fibre ◽  
Volume Fraction ◽  
Fibre Volume Fraction ◽  
Fibre Volume ◽  
Thermoplastic Composites ◽  
Hybrid Yarn ◽  
Quality Aspects ◽  
Structural Applications ◽  
Recent Developments ◽  
Reinforced Thermoplastics

The aim of this paper is to highlight recent developments in the processing of waste carbon fibre for thermoplastic composites. Initially, injection moulding and nonwoven technologies have been used to integrate waste carbon fibres into fibre-reinforced thermoplastic composites. Recently, tape and hybrid yarn spinning technologies have been developed to produce tape and hybrid yarn structures from waste carbon fibre, which are then used to manufacture recycled carbon fibre-reinforced thermoplastics with much higher efficiency. The hybrid yarn spinning technologies enable the development of various fibrous structures with higher fibre orientation, compactness and fibre volume fraction. Therefore, thermoplastic composites manufactured from hybrid yarns possess a good potential for use in load-bearing structural applications. In this paper, a comprehensive review on novel and existing technologies employed for the processing of waste carbon fibre in addition to different quality aspects of waste carbon fibre is presented.

Fibre Misalignment Measurement of Nanomodified-Unidirectional Carbon Fibre Laminates

2013 ◽  
Vol 393 ◽  
pp. 200-205 ◽  
Author(s):  
Aidah Jumahat ◽  
Constantinos Soutis ◽  
Nor Merlisa Ali ◽  
Jamaluddin Mahmud
Keyword(s):  
Carbon Fibre ◽  
Volume Fraction ◽  
Fibre Volume Fraction ◽  
Optical Microscope ◽  
Fibre Volume ◽  
Void Content ◽  
Image Analyzer ◽  
Angle Distribution ◽  
Misalignment Angle ◽  
Carbon Fibre Reinforced Polymer

This paper investigates the effect of nanosilica on the fibre waviness or misalignment angle distribution of carbon fibre reinforced polymer composite unidirectional laminates. The quality of the laminates was evaluated using image analyzer technique. The polished specimens were examined using Polyvar B-met optical microscope and analysed using KSRUN ZEISS software. The effect of 3, 7 and 13 vol.% nanosilica on the fibre misalignment angle distribution was determined. The results showed that, the fabricated laminates have average fibre volume fractionVfof 42%, low fibre waviness distribution (averageφo= 2.5o) and less than 1% void content. This implies that the fabrication technique, which was employed in the current work, successfully produced good quality laminates. The presence of nanosilica results in a narrow fibre angle distribution in the HTS40/828 laminate.

Thermal transport properties of carbon-carbon fibre composites III. Mathematical modelling

1990 ◽  
Vol 430 (1878) ◽  
pp. 199-211 ◽  
Keyword(s):  
Thermal Conductivity ◽  
Thermal Transport ◽  
Volume Fraction ◽  
Fibre Volume Fraction ◽  
Microstructural Characterization ◽  
Fibre Volume ◽  
Porosity Level ◽  
Using Data ◽  
Carbon Fibre Composites ◽  
Good Agreement

Measured thermal transport data are interpreted using data obtained by careful microstructural characterization concerning the porosity distribution and graphite grain sizes. The separate thermal conductivity components for one-dimensional composites are deduced using a simple series addition to determine ג f1 and ג m1 and using an adaptation of the Bruggeman analysis for calculating ג f┴ and ג m┴ . Parallel to the fibre axis the calculated thermal conductivities are shown to be in good agreement with existing theories of the thermal conductivity of graphite using experimentally determined values of grain size. The derived data are recombined in a simple series model to predict the thermal conductivity of two-dimensional composites containing a different fibre volume fraction and porosity level. Good agreement with measured data is obtained.

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