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 23 for “"Fibre-reinforced composites"”.
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Manufacture of cellular solids using natural fibre reinforced composites
… the manufacturing of recyclable, eco-friendly composites and their fabrication into hollow cores. The composites have been manufactured using compression moulding and extrusion techniques; each representing batch manufacturing and continuous manufacturing respectively. A statistical design of …
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Active fibre-reinforced composites with embedded shape memory alloys
This dissertation concerns active fibre-reinforced composites with embedded shape memory alloy wires. The structural application of active materials allows to develop adaptive structures which actively respond to changes in the environment, such as morphing structures, self-healing structures and …
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Plasma-Enhanced Continuous Carbon Fibre-Reinforced Composites Manufactured from Recycled Thermoplastics
Compared to cross-linking thermoset matrix composites, the thermo-reversibility of thermoplastic is an attribute that facilitates the reuse of recovered material to reduce depletion of and reliance on virgin fossil resources. Process development for integrating waste thermoplastics into …
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An analytical tool wear model for drilling of continuous fibre reinforced composites
Carbon fibre reinforced polymers (CFRP) are increasingly being used in aerospace structures due to high specific stiffness and good corrosion resistance. Drilling holes to facilitate the mechanical joining of CFRP to other, metallic components is a key operation during aircraft manufacture and high …
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Resistance of Carbon Fibre Reinforced Composites to Quasi-static and Ballistic Perforation
… 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 tension …
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The modelling of natural fibre-reinforced composites using a multi-scale methodology
A multi-scale methodology for small strain linear elasticity is presented in this thesis. The homogenisation process is discussed in general, with particular attention to the required boundary constraints on the micro-domain and the extraction of an effective elastic modulus. For the case of a …
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The effect of chemical treatment, fibre length, fibre content and injection moulding parameters to uv irradiation resistance of oil palm fibre reinforced composites
… the composite material samples, while oil palm fibre as reinforcement. The effect of the fibre length, fibre content, fibre treatment, coupling agent and injection moulding parameter to ultraviolet (UV) light resistance of this composite and also the optimum setting of them were investigated. …
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The effect of blast loading on composites that contain sustainable materials
… sustainability, bio-based resins, and natural fibres as reinforcements in Fibre Reinforced Polymer (FRP) composites offer potential benefits, and some of these can be used in different applications particularly when strength is of secondary importance (such as automotive, architecture, and …
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A DEM for visualising damage evolution and predicting failure of composite lamina under uniaxial and biaxial loads
Fibre-reinforced composites have many outstanding advantages that attract commercial industries to use them such as, automotive industry, aerospace industry, marine industry, wind turbines, and sports goods. Fibre-reinforced composites characterised as a high strength/stiffness to weight ratio …
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The influence of fiber hybridisation on dynamic mechanical behavior of natural based composites
The relatively higher costs of synthetic fibres (glass, carbon, kevlar fibre) used in fibre reinforced composite materials make it desirable to investigate natural fibres as a source of possible reinforcement in low-cost applications. Natural fibres are abundant and represent a significant cost …
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Design and optimisation of adhesively bonded overlap joints
… FEA. Different metallic materials, as well as fibre reinforced composites, were chosen to be joined with various adhesives. The joint strengths of reverse-bent joints were found to be up to 40% higher compared to flat joints when metallic substrates were used. Due to the significant decrease of …
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Nanostructured thermoset resins and nanocomposites containing hyperbranched blockcopolyether liquid rubbers and organophilic layered silicates
… to epoxy resins. The resulting epoxy “hybrid nanocomposites” afforded improved toughness showing no reduction in stiffness and glass temperature. An optimized hybrid system was employed in a resin transfer moulding process to prepare carbon fibre reinforced composites containing silicate …
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Characterisation of cross-linking and moisture ingress detection in an epoxy/amine resin using fibre-optic sensors
… increasingly as matrix materials in advanced fibre-reinforced composites. It is well known that the processing conditions used to manufacture the composite can have a major influence on its mechanical integrity in service. In addition, the processing parameters can also affect the ingress of …
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Flammability and durability of bamboo fabric reinforced polypropylene composites and their hybrids
… contribute substantially to fire resistance in composites. In this study, bamboo fabric has been used to reinforce polypropylene (PP) to produce eco-friendly composites. Hybridisation is a technique which may improve the strength and stiffness as well as the moisture resistance and flammability …
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A study of monomer liquid mixtures and polymer network formation at a solid surface using molecular dynamics
Fibre-reinforced composites are used in a wide variety of industries for their light weight, high strength and durability. However, the structure of the polymer matrix near the fibre interface is not well understood and difficult to characterise experimentally. The aim of this project is to use …
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Influences on nanocomposite structural performance: experimental study on materials processing and bonding
Nanocomposites have been widely reported to enhance performance in polymers, in both<br/>mechanical and physical properties. An increasing amount of research has resulted in many<br/>nanocomposite polymers being applied to various consumer products from motorcars to golf<br/>balls. Yet, at this …
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Phase morphology and fracture toughness of CNT/polytherimide modified epoxy polymer nanocomposites as matrices for advanced CFPR composites
… utilised as matrices for advanced carbon fibre reinforced polymer (CFRP) composites. Their relatively high stiffness, strength, glass transition temperature (Tg), and strong bonding to the reinforcing fibres, together with their ease of processing, are attractive attributes. The high …
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The influence of different chemical treatments on the mechanical properties of hemp fibre-filled polymer composites
… as substitutes for manmade resources. Natural fibres are considered as substitutes for synthetic fibres in reinforced polymer matrix composites. Increased interest has been shown in natural fibres from plants such as cotton, jute, hemp as replacements for aramid, glass, and carbon fibres. This …
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