Mechanical Properties Of Coconut Fibre Reinforced Composites

Abd Aziz, Muhammad Fahmi (2018) Mechanical Properties Of Coconut Fibre Reinforced Composites. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

Composite materials have grown rapidly by volume and number of applications to break through and capture new markets.These composite materials include a variety of natural ingredients such as dried fruit,rice husk,wheat husk,straw and hemp fibres can be used to provide gentle-reinforced polymer composites for commercial use for agricultural wastes.Besides,the problem statements in this study are coconut composites will be low in their cohesion and ductility when coconut fibre increases.This study was conducted to determine the mechanical properties of coconut fibre composite matrix composites and the effect of the polymer matrix volume on the mechanical properties of the composite matrix composite of the fibre reinforced polymer.The use of fibres made of coconut fibre as an amplifier in the composition of the polyester matrix is evaluated by used long fibre.Various composite formulations were prepared using fibres by 10%, 20%,30%,40% and 60% coconut fibre as reinforcement.For tensile strength,the sample is provided according to ASTM D3039 and the standard sample voltage strength is measured and using universal tensile machine,INSTRON 8872 at a fixed speed of 5mm min-1, for the micro hardness, the sample is induced using Durometer following Procedure ASTM No.D2240 type D and reading are calibration scales. It has been noted that Ultimate Tensile Strength (UTS), Modulus of elasticity and extension to break.The amount of coconut fibre at 10% has highest modulus of elasticity and then decreased significantly by 20% weight of fibre. However modulus of elasticity continued to increase with an increase in the number of coconut fibre at 20% fibre weight.The results showed the Young’s modulus and the final tensile strength increased after increasing the rate of coconut fibre at 20% fibre weight.Meanwhile, hardness for coconut fibre reinforced composites is higher at 10% by weight and the hardness was decrease with the increasing the fibre weight.In conclusion,the increase in coconut fibre reinforces the polyester matrix composite and the maximum tensile strength is achieved at about 10% and 60% by weight of the coconut fibre content and the result showed that the increase in fibre ratio in composites can make composite materials more stable.While the tensile load is higher, composite hardness decreases along with the increase in the content of coconut fibre.

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