Impact Behaviour Of Coconut Shell Reinforced Polymer Composites

Azizan, Nurul Sakinah (2019) Impact Behaviour Of Coconut Shell Reinforced Polymer Composites. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

To date, there is a large body of knowledge in the literature on the development of natural composites. Nonetheless, some of the main limitation is the brittleness of the natural composites when using Polyester resin as a matrix can lead to poor mechanical performance of natural composites. Thus, the main objectives of this project are i) to fabricated Coconut Shell Reinforced Polymer Composite and ii) to study the impact behavior of Coconut Shell Reinforced Polymer Composite. In this project, the coconut shells were started by reinforcing coconut shell particle using a blender. The size of coconut shell was sieved at 500m size using vibratory sieve shaker. The coconut shell composites were prepared from 0 wt% Coconut Shell Powder (CSP) following 10 wt% of CSP and 25 wt% of CSP. Open moulding method was used in this project by mixing the Unsaturated Polyester (USP) Resin and CSP using a stirrer machine. This project following Standard Test Method for Measuring the Damage Resistance of Fiber Reinforced Polymer Matrix Composite to a drop Weight Impact Loading (ASTM D7136). The impact behavior of the Coconut Shell Polymer Composites were investigated under drop weight impact test. The experimental began with 0 wt% CSP following 10 wt% and 25 wt% CSP at 1 m/s, 2 m/s and 3 m/s velocities. The result obtained was determined by collecting data from energy absorbed, force and displacement. This project shows as increase the impact velocity, the energy absorbed by the specimen also increase. 0 wt% CSP gives the highest energy absorbed which is 6.071 J. This test suggests 25 wt% specimen for material application due to lowest energy absorbed which is 0.684 J. The presence of 10 wt% CSP gives larger damage area compared to 25 wt% CSP. It shown the 25 wt% CSP gives better impact performance than 0 wt% CSP and 10 wt% CSP at 1 m/s low velocity impact or impact energy.

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