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Natural fibre composite (NFC) displays a rapid development in the study and innovation sector due to the increasing benefits of the material compared to other types of fibre such as synthetic fibre composites, which includes low price and low environmental impacts. These composites can be explored through various variables and can be tested through various factors such as fibre interfacial adhesion, fibre orientation and fibre strength. However, this thesis focuses only on the testing on the vertical (90°) and horizontal (0°) of fibre orientation as it is still not well investigated, yet. The main objective of this research is to investigate the performance of mechanical properties of kenaf fibre reinforced epoxy resins for 90° and 0° of fibre orientation and analyse the effect of changing the orientation on the material. For the fabrication of the material, manual preparation method has been used and several mechanical testing has been and alkali treatment of kenaf fibre prior fabrication process. For hardness test, the 90° of fibre orientation produced 31.6% higher of hardness strength than 0° of fibre orientation while for impact test, 90° of fibre orientation resulted 39.5% greater of impact energy than 0° of fibre orientation. 6% of kenaf fibre composition with 90° of fibre orientation generated the highest stress to breaks while 2% of kenaf fibre composition with 0° of fibre orientation has the lowest stress to fracture. By conducting the SEM tests, it can be seen clearly that 6% of kenaf fibre composition with 90° of fibre orientation has the smallest gap between the fibres and 2% of kenaf fibre composition with 0° of fibre orientation has the largest gap between fibres. Thus, the performance of mechanical of vertical (90°) of fibre orientation produced better performance in mechanical testing compared to horizontal (0°) of fibre orientation. [ABSTRACT FROM AUTHOR]

In the past decades, the extensive studies had been accomplished on the natural fibre reinforced polymer composites (NFPC) and are still continuous until today. The composites made of natural fibre and polymer has proven the better effectiveness in high impact fatigue strength and toughness. The increases of fibre loading give higher results fundamental in strength due to its high interfacial bonding between the fibre. In the present work, experimental tests were carried out to study the mechanical properties; tensile, hardness and impact and morphological characterization: Scanning Electron Microscope (SEM) of the NFPC. The composites fabricated are between the Kenaf fibre and epoxy resin. The Kenaf fibre reinforced epoxy resin composites were fabricated using hand layup technique by layering the arranged fibre with polymer in the mould with different angle orientation (22.5° and 67.5°) as the main parameter observed and the fibre composition (2%, 4% and 6%). Before the fabrication started, the fibre had undergone the alkali treatment for the effective surface modification that can enhance the interfacial bonding between the fibre. [ABSTRACT FROM AUTHOR]