Experimental analysis on mechanical properties of coconut leaf reinforced polyester resin

Henry, Wellden (2023) Experimental analysis on mechanical properties of coconut leaf reinforced polyester resin. Project Report. Melaka, Malaysia, Universiti Teknikal Malaysia Melaka. (Submitted)

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Abstract

In order to protect the environment by using biodegradable materials, natural fibres have become more frequently used in composites. Due to their high specific strength and modulus, fibre reinforced polymer-based composites have been employed in numerous industrial applications for a very long time. Since there are numerous natural fibres accessible, it was decided to investigate using coir, a natural fibre, as reinforcement in reinforced polymers. The strength and lightness of natural fibres are matched by their affordability. Therefore, the objective of the present study is to investigate the mechanical properties of coconut leaf reinforced polyester resin. This project will be carried out by the fabrication of the materials by using the hand lay-up technique. Then, the cutting of fabricated materials by using CNC router machine according to the ASTM standards. After completely done the cutting process, it will test through tensile, flexural, and impact tests to determine the mechanical properties of the samples. The collected data were analysed using statistical analysis. Based on the tensile, flexural, and impact properties of coconut leaf reinforced polyester resin, it shows that for coconut leaf reinforced polyester resin ratios of 40CL60PR have better tensile strength (22.57674 MPa) and elasticity (694.5164 MPa), flexural load of maximum force (178.6082 MPa) and flexural load of stress (93.09764 MPa),and impact strength (0.288 Joule) compared to the other eco-friendly ratios of coconut leaf reinforced polyester resin which are 20CL80PR, 50CL50PR, 60CL40PR, and 80CL20PR respectively. Then, a one-way analysis of variance (ANOVA) was applied to analyze the tensile strength and elasticity, flexural load of maximum force and maximum stress, and impact strength of the CLPR composites. The results presented that the mechanical properties of CLPR composites for all five eco-friendly ratios were significant since the P-value is lower than the significant cut-off level which is α = 0.05. Therefore, it indicated that the mechanical properties for five eco-friendly ratios of CLPR composites has different averages.

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