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 29 for “"Natural fibre"”.
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Natural fibre reinforced cement composites
… necessitated in finding alternative resource of fibres. Over the last two decades natural fibre (mainly wood pulp fibre) has emerged as the most acceptable alternative reinforcement for fibre cement products. The first three chapters of this study describe in some depth the preparation and …
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Characterization of natural fibre reinforced biodegradable composities
… recyclability, and high specific strength of natural fibres make them a good replacement for synthetic fibre such as glass in fibre reinforced plastics (FRP). Green and ecofriendly source of these fibres offer less reliance on oil sources. However, their moisture uptake ability, low thermal …
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Multiscale Damage Modelling of Natural Fibre Composites
Natural fibre composites (NFCs) display several beneficial traits, including low density, renewability of sources, and full biodegradability when combined with polymers such as poly(lactic acid ). Environmental concerns and sustainability requirements have led to increased application of NFCs in …
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Manufacture of cellular solids using natural fibre reinforced composites
… other two filled with polyurethane foam and wood fibres, respectively have been tried. The natural frequencies and structural damping have been experimentally determined by subjecting the sandwich beam to harmonic vibrations. The energy absorption characteristic has been experimentally determined …
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Modelling environmental effects on fracture damage of natural fibre-reinforced polymer composites
The behaviour of sodium hydroxide treated sisal fibre-reinforced polyester composite subjected to environmental ageing conditions has been studied with the aim of modelling its effect on the composite fracture damage for the purpose of long-term performance prediction. The composite was accelerated …
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Modelling environmental effects on fracture damage of natural fibre-reinforced polymer composites
The behaviour of sodium hydroxide treated sisal fibre-reinforced polyester composite subjected to environmental ageing conditions has been studied with the aim of modelling its effect on the composite fracture damage for the purpose of long-term performance prediction. The composite was accelerated …
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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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Fabrication and analysis of nanoparticle-infused natural fibre honeycomb core in sandwich structures
Submitted in fulfillment of the requirements of Master of Engineering: Mechanical Engineering, Durban University of Technology, Durban, South Africa, 2023.
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Characterisation of Halogen Free Fire Retardant Polypropylene Composites Reinforced by Short Natural Fibres
… industry towards replacing synthetic fibres with their natural counterparts. However, the limited thermal stability of natural fibres, which leads to degradation during processing mostly beyond 200⁰C, restricts the mass manufacturing methods, such as injection moulding. Halogen-based …
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Low velocity impact response of laminated textile coir-aramids/epoxy hybrid composites subjected to transverse penetration loading
The hybrid of natural and synthetic fibres in a composite system has gained interest in research field due to the environmental consciousness. Coir natural fibre has been found to have a high potential as impact resistance, in which brittle fibre helps to spread the impact energy over a wider area. …
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Bio-composites materials from engineered natural fibres for structural applications
… footprint caused by conventional synthetic fibre reinforced petrochemical-derived polymer composites along with potential improvement in mechanical properties for natural fibre reinforced bio-derived polymer composites, have long been a motivation for further research and innovation in …
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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, …
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Effects of Wool Fibres on Mechanical and Flammability Characteristics of Wool-Polypropylene Composites
Natural fibre reinforced polymer composites have been intensely studied and developed to create alternatives for synthetic fibre reinforced counterparts due to their unique advantages, such as CO2 neutrality, relatively high specific strength, and stiffness. One such natural fibre is wool, which is …
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The influence of different chemical treatments on the mechanical properties of hemp fibre-filled polymer composites
… led the research community to explore the use of natural biodegradable raw materials 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 …
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Harakeke fibre as reinforcement in epoxy matrix composites and its hybridisation with hemp fibre
… interest and motivation in research to develop natural fibre composites to replace glass fibre composites in certain applications. Harakeke fibre known as New Zealand flax or Phormium tenax used to be an important export material in New Zealand in the early twentieth century, but its production …
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The factors affecting the recovery of bloodstain evidence from buried clothing.
… survival rate would be lower on the organic natural fibre fabrics, and that the bloodstain survival would also be more affected in the autumn and winter seasonal periods.
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Acoustical characteristics of oil palm mesocarp fibres
Natural fibres are availability biomass, plentiful in agricultural waste and eco�friendly materials. Currently, it is become the major reasons for emerging renewable materials in sustainable technology. Therefore, this study discusses the acoustical characteristics of agro-waste biomass fibres from …
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Acoustical characteristic of empty fruit bunch (EFB) fibre with influence of sodium hydroxide treatment time and decay lifespan
Research on natural fibres has gain much interest in recent years due to the sustaibability and avaibility in which demand for green renewable reinforced composites. Natural fibres can be considered as the alternative way to replace the synthetic fibre as well as to implement the sustainability of …
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Rapid prototyping of green composites
… lightweight, combining the tensile strength of a fibre and the compressive strength of a resin matrix. Unfortunately, tooling for composite parts is currently expensive, slow to make, and therefore out of reach for many small-scale projects. Furthermore, popular composites are toxic to the …
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Flammability and durability of bamboo fabric reinforced polypropylene composites and their hybrids
… as the moisture resistance and flammability of natural fibre reinforced composites (NFRCs). The hybrid concept introduced here will reduce the use of the glass fibre in various applications. Bamboo fabric based PP composites were manufactured using compression moulding. The effects of processing …
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