Correlation study on physical properties and mechanical properties of kenaf fibre composites

Identifying the correlation between the physical and mechanical properties of the natural plant is important in material characterization by performing the statistical approach. The variation of a type of plant fibre would exhibit a wide range of material properties. The prediction of materials characterization is optimized when the significant elements is identified earlier. Pearson correlation coefficient is calculated from the measurements of physical and mechanical properties from experimental work such as flexural strength and flexural modulus of the composites. A Pearson correlation ruler is used to measure the level of the correlation between the variables. The level of the correlation is between a strong negative relationship and a strong positive relationship. The correlation between the variables is verified using a scatter diagram for each combination of the variables. There is a positive strong linear relationship between the diameter untreated kenaf composite and flexural modulus of kenaf composite with chemical treatment (0.5% silane) with a score of 0.888 of Pearson correlation coefficient. Another interconnection between diameters of (1% silane) kenaf composite with a flexural strength of kenaf composite (0.5% silane) score by 0.891. This finding proves there is an interconnection between the physical and mechanical properties of plant fibre according to the chemical treatment. Lastly, the result can assist researchers to predict significant variables from an experimental result that may optimize the cost and time for the laboratory work. (c) 2021 Elsevier Ltd. All rights reserved. Selection and peer-review under responsibility of the scientific committee of the 3rd Symposium on Industrial Science and Technology 2021