Extrusion Freeform Fabrication of Chopped-Fibre Reinforced Composites

1997 ◽  
Vol 9 (4) ◽  
pp. 449-456 ◽  
Author(s):  
Paul Calvert ◽  
Tung Liang Lin ◽  
Hogan Martin
Keyword(s):  
Carbon Fibre ◽  
Epoxy Resin ◽  
Elastic Properties ◽  
Fibre Orientation ◽  
Three Dimensional ◽  
Reinforced Composites ◽  
Freeform Fabrication ◽  
Large Influence ◽  
Fibre Reinforced Composites ◽  
Extrusion Freeform Fabrication

Extrusion freeform fabrication is a process whereby three-dimensional parts are built by writing successive layers of material onto a support. In this case, two types of epoxy resin have been formed into test bars containing varying fractions of chopped carbon fibre of various lengths. It is shown that the fibre orientation follows the writing direction and has a large influence on the directional elastic properties of the composite. Test bars have also been formed containing multiple layers of reinforced and unreinforced resin to demonstrate the flexibility of this method.

scholarly journals Damping Properties of Flax/Carbon Hybrid Epoxy/Fibre-Reinforced Composites for Automotive Semi-Structural Applications

Fibers ◽  
2020 ◽  
Vol 8 (10) ◽  
pp. 64
Author(s):  
George Fairlie ◽  
James Njuguna
Keyword(s):  
Carbon Fibre ◽  
Young’S Modulus ◽  
Young's Modulus ◽  
Fibre Orientation ◽  
Damping Ratio ◽  
Testing Machine ◽  
Reinforced Composites ◽  
Damping Properties ◽  
Structural Applications ◽  
Fibre Reinforced Composites

The ever-increasing demand for environmentally friendly biocomposites for use in various engineering applications requires a strong understanding of these materials properties, especially in automotive applications. This study focused on investigating how the stacking sequence and fibre orientation impacts the damping properties of hybrid flax/carbon fibre-reinforced composites. Different hybrid carbon fibre/flax fibre-reinforced composites using epoxy resin as the matrix were manufactured using vacuum-assisted resin infusion moulding technique. Each composite material was then tested for tensile properties using a universal testing machine, and the damping experiment was conducted using an impulse hammer and a Laser Doppler Vibrometer. The tensile study found out that adding a flax layer to the external layers of carbon fibre laminate reduced Young’s modulus by 28% for one layer and 45% for two layers. It was noted that when the fibre orientation of the internal layer of [C/F2/C]s was replaced with two ±45° layers, this had a very little effect on Young’s modulus but reduced the ultimate tensile strength by 61%. This experimental study also showed that the most important layer when it comes to damping properties is the external layers. By adding an external flax layer into an epoxy/carbon fibre-reinforced composite considerably enhanced its damping ratio by 53.6% and by adding two layers increased it by 94%. The results indicated a high potential for the automotive semi-structural applications to improve damping properties of the vehicle.

RecyCarb: Process Optimization and On-Line Monitoring in the Recycling of Carbon Fibre Waste for the Re-Use in High-Grade Fibre Reinforced Plastics

2019 ◽  
Vol 809 ◽  
pp. 515-520
Author(s):  
Marcel Hofmann ◽  
Holger Fischer ◽  
Katharina Heilos ◽  
Andrea Miene
Keyword(s):  
Carbon Fibre ◽  
Fibre Orientation ◽  
Value Added ◽  
Reinforced Composites ◽  
High Quality ◽  
Reinforced Plastics ◽  
Technological Gap ◽  
On Line ◽  
Fibre Waste ◽  
Fibre Reinforced Composites

Within the project ‘RecyCarb’ a qualified value-added chain for recycled carbon fibres (rCF) to enable their high-quality and sustainable re-use in sophisticated fibre-reinforced composites was established. A team of four industrial partners and two research institutes closed the technological gap between the actual rCF available on the market and the functional re-use as reinforcing elements in high-quality components. Process optimisation, initiation of a reliable scheme of quality assurance and a process integrated quality monitoring were the main aspects of this project. Besides different kinds of carbon fibre waste, different nonwoven processes (web formation and bonding methods) and an online fibre orientation analysis were investigated. This project focuses a variety of several application markets, e.g. sports equipment, medical technologies or automotive, shown by developed demonstrators.

Influence of cutting speed and tool geometry on form and machine tapping of carbon fibre-reinforced composites

2021 ◽  
Vol 43 (2) ◽  
Author(s):  
Sérgio Luiz Moni Ribeiro Filho ◽  
Túlio Hallak Panzera ◽  
Lincoln Cardoso Brandão ◽  
Alexandre Mendes Abrão
Keyword(s):  
Carbon Fibre ◽  
Cutting Speed ◽  
Tool Geometry ◽  
Reinforced Composites ◽  
Fibre Reinforced Composites

Mechanical unfolding of a fluorescent protein enables self-reporting of damage in carbon-fibre-reinforced composites

2014 ◽  
Vol 2 (17) ◽  
pp. 6231 ◽  
Author(s):  
Samuel Lörcher ◽  
Thomas Winkler ◽  
Katarzyna Makyła ◽  
Claudiane Ouellet-Plamondon ◽  
Ingo Burgert ◽  
...  
Keyword(s):  
Carbon Fibre ◽  
Fluorescent Protein ◽  
Reinforced Composites ◽  
Fibre Reinforced Composites

scholarly journals CARBON FIBRE ALIGNMENT FOR REINFORCED COMPOSITES USING EMBROIDERY TECHNOLOGY

2021 ◽  
Vol 2021 ◽  
pp. 102-108
Author(s):  
J. Domenech-Pastor ◽  
P. Diaz-Garcia ◽  
D. Garcia
Keyword(s):  
Mechanical Properties ◽  
Flexural Strength ◽  
Carbon Fibre ◽  
Carbon Fibers ◽  
Vertical Direction ◽  
Woven Fabrics ◽  
Woven Fabric ◽  
Reinforced Composites ◽  
Good Opportunity ◽  
Fibre Reinforced Composites

Composites are materials formed by the combination of two or more components that acquire better properties than the ones obtained by each component on its own. Composites have been widely used in the industry due to its light weight and good mechanical properties. To improve these properties several layers of reinforced material (e.g., carbon fibre) are overlapped which produce an increase in the fibre consumption. In this sense Tailored Fibre Placement (TFP) embroidery can offer good opportunity to reduce the consumption of reinforced fibre while improving the mechanical properties due to the alignment of the fibres in the effort direction. This study analyzes the performance of carbon fibre reinforced composites with Polyester resin made with TFP embroidery technology against flexural strength efforts and without using plain woven fabrics to demonstrate that the use of reinforcement fabrics in composites can be optimized by a curved alignment of the fibers. Two different structures were embroidered with TFP technology, one simulating a woven fabric with straight unidirectional alignment of fibres in horizontal and vertical direction, and a second structure made with curvilinear alignment of carbon fibers. After the study of the flexural mechanical properties an improvement of 18% was obtained in maximum flexural strength.

scholarly journals Mechanical and fracture performance of carbon fibre reinforced composites with nanoparticle modified matrices

2016 ◽  
Vol 2 ◽  
pp. 96-103 ◽  
Author(s):  
Declan Carolan ◽  
A.J. Kinloch ◽  
A. Ivankovic ◽  
S. Sprenger ◽  
A.C. Taylor
Keyword(s):  
Carbon Fibre ◽  
Reinforced Composites ◽  
Fracture Performance ◽  
Fibre Reinforced Composites
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