Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 93 for “"carbon fibre"”.
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Drilling of carbon fibre reinforced plastic composites
… survey focusing on the machinability of carbon fibre reinforced plastics (CFRP), three main phases of experimental work were undertaken to evaluate the drilling of CFRP and associated stack materials. Phase 1 and 2 involved small diameter holes (1.5 mm) in thin CFRP laminates (3 mm thick) …
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The electrical peformance of carbon fibre composite joints
The proposed use of Carbon Fibre Composite material in future aircraft projects has led to the initiation of many research programmes internationally. Much of the work is concentrated around the electrical performance and properties the material. Investigations have shown that Carbon Fibre …
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Structure and properties of carbon fibre reinforced aromatic thermoplastics
… was found to be greater than that of continuous fibre reinforced APC-2 and increased with decreasing particle size over the size range examined. Fractographic analysis of this phenomenon revealed several toughening mechanisms: Polyetheretherketone (PEEK) rich zones act as crack arresters; fibre …
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The compressive behaviour of unidirectional carbon fibre reinforced plastic
… strength of unidirectionally reinforced carbon fibre composites when loaded parallel to the fibres. A comprehensive review of previous research is presented and from this it is clear that no overall theory e,d.sts for predicting the unidirectional compressive strength of high volume …
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ASPECTS OF RECYCLING OF CARBON FIBRE REINFORCED POLYETHERETHERKETONE (CF/PEEK)
This study focused on the recycling of the carbon fibre reinforced polyetheretherketone (CF/PEEK) composite, as it is an expensive material worth recycling. In its virgin form, CF/PEEK has excellent mechanical properties. Thus it is hoped that even after recycling, the extent of degradation to its …
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Multi-axial fracture behaviour of notched carbon-fibre/epoxy laminates
Carbon-fibre reinforced polymer (CFRP) laminates are widely used in various engineering applications, such as in race cars and aircrafts, because they are light, stiff and strong. They commonly contain stress raisers in the form of holes and notches (for mechanical joining methods, routing of pipes …
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Plasma-Enhanced Continuous Carbon Fibre-Reinforced Composites Manufactured from Recycled Thermoplastics
… structural materials, such as long-fibre-reinforced composite tape, is especially encouraged. Notwithstanding the numerous tape manufacturing processes described in the original literature, their effectiveness with waste thermoplastic remains unexplored. The research objective of …
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Chemistry of the Degradation of Vinyl Polymers to give Carbon Fibre Precursors
… of polyacrylonitrile, a precursor for carbon fibre manufacture, has been made by examining the oxidation of 'model* compounds of the polymer. During the attempted preparation of one of these 'models', 2,)-dicyanopentane, it became apparent that this compound was unstable in the presence …
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Resistance of Carbon Fibre Reinforced Composites to Quasi-static and Ballistic Perforation
… the indentation and penetration resistance, of carbon fibre reinforced plastic (CFRP) cross-ply laminates were investigated under quasi-static and ballistic loading. In this thesis, the two most prominent failure modes were indirect tension and shear plugging. To characterise the indirect …
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Behaviour of lightweight concrete beams strengthened with carbon fibre reinforced polymer in shear
Epoxy bonded fibre reinforced polymer (FRP) composites are widely used for the retrofit of ailing reinforced concrete structures, for both shear and flexure. This technology provides unique features compared with conventional retrofitting systems. Among these FRP has good corrosion resistance, …
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Shear Strengthening of Reinforced Concrete Beams Using Externally Bonded Carbon Fibre Reinforced Plates
… beams strengthened in shear by the addition of Carbon Fibre Reinforced Plastics (CFRP). An experimental programme was devised to investigate the shear behaviour of reinforced concrete beams strengthened by the attachment of different configurations and quantities of CFRP using epoxy adhesives. …
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The crystallisation of Poly (aryl ether etherketone) (PEEK) and its carbon fibre composites
… polymer whose properties can be enhanced through fibre reinforcement. The properties of PEEK and its composites are sensitive to changes in the crystalline content and morphology, which are influenced by the processing conditions. As such it is of great importance to have a good understanding of …
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Fatigue Strengthening of Damaged Steel Plates using Ultra-High Modulus Carbon Fibre-reinforced Polymer Plates
… bonded small patch Ultra-high modulus (UHM) carbon-fiber reinforced polymer (CFRP) plates of 460 GPa modulus in extending fatigue life and slowing crack propagation in steel plates with simulated fatigue cracks. The study investigates a range of bond lengths at or below the development length …
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Non-woven, recycled carbon fibre composites : development of test methods and assessment of process parameters
The embodied energy of carbon fibre is as high as that of aluminium yet the disposal of composite waste presents a challenge for the circular economy. The sustainable use of carbon fibre could be achieved with its reuse in recycled carbon fibre composites. However, their reinforcement architecture …
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An integrated framework for finite element modelling of ultrasonic inspections of carbon fibre reinforced polymer components
… to provide optimum strength and stiffness.Carbon Fibre Reinforced Polymer (CFRP) composite materials pose a challenge for ultrasonic Non Destructive Evaluation (NDE) inspections due to their anisotropic material properties and often complex morphology.This Thesis develops an integrated …
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Assessing Non-Planar Slicing and Carbon Fibre Filament Additives as Steps Towards 3D-Printed Drone Propellers
… how non-planar model slicing and short-chopped carbon-fibre additives affect the mechanical performance of printed parts and viability of printed propellers. Creep testing simulating propeller thrust loading found coupons varied greatly in time to failure, although benefits of carbon-fibre …
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Fibre Structure Preservation during Carbon Fibre Reinforced Polymer Recycling – Characterisation and Parameter Prediction Model of the Recycling Process
In 2021, 24,000 tonnes of carbon fibre reinforced polymer (CFRP) waste worth USD 630 million was either landfilled or incinerated globally. The amount of CFRP waste is estimated to increase as a result of the ever-rising market demand. The CFRP market demand is due to the remarkable properties of …
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The effect of solvent damage and fibre waviness on the strength of cross-plied carbon fibre reinforced poly(aryl sulphone)
The effect of damage on carbon-fibre reinforced poly(aryl suiphone) by a solvent of the type used by BAe Military Aircraft Division as a paint stripper has been investigated together with the effect of fibre waviness upon the mechanical strength of carbon-fibre reinforced poly(aryl suiphone). …
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