Finite element and statistical analysis of unidirectional pineapple leaf fibre (PALF)polylactic acid composite under static and cyclic condition

Othman, Aizat Fareez (2021) Finite element and statistical analysis of unidirectional pineapple leaf fibre (PALF)polylactic acid composite under static and cyclic condition. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

Natural fibre reinforce composites are been widely study by many researchers due to their interesting properties and eco-friendly behaviour. Natural fibres offer plenty of advantages such as continuous resource, environmentally safe and biodegradable. They also exhibit good physical and mechanical properties and it varies by the plant species. Pineapple leave fibre (PALF) is one of the natural fibres that is extensively been study for its properties. This is due to excessive waste of this fibre produced in Asian nation, which could eventually be use for certain purpose. A close study of physical and mechanical behaviour of PALF could lead it to replace other raw material for numerous applications. From the socioeconomic perspective, PALF may be a brand-new supply of staple to the industries and may be potential replacement of the costly and non- renewable artificial fibre. The objectives of this research are to compare the static finite element analysis of unidirectional PALF reinforced polylactic acid with experimental testing result and to predict the probability of failure of the composite by using statistical analysis. The static FEA was conducted using Abaqus CAE software with two different fibres loading which were 40 wt.% and 70wt.%. Statistical analysis used two-parameter Weibull analysis to obtain shape and scale parameters which were used in plotting probability of survival graph. The comparison of simulation and experimental data shows difference of 8.5% for 40wt.% PALF/PLA composite and 1.8% for 70wt.% PALF/PLA composite. The predicted lifecycle of 40wt.% at 50% reliability level with 50% loading level is 23065 and for 75% loading level is 1331. For 70wt.%, at 50% loading level is 678058 and 75% is 3085.

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