Investigation of Polypropylene-Grass Composite Using Split-Split Plot Experimental Design

Abstract

This study investigates the effects of process parameters in the
production of polypropylene-grass composite using split-split plot
experimental designs. The experimental values of mechanical properties
of polypropylene-grass composite obtained at barrel temperature
ranging from 210oC to 310oC were input into the analytical design of
split-split plot design to obtain its numerical design. The numerical
experimental designs were evaluated for sum of squares for process
parameters and their interactions. The results obtained were presented
on ANOVA Table. F-test was used to compare statistical significance of
the factors of the total deviation. The results of the calculated Fisher’s
Ratio atsignificant value of 0.05 for the process parameters such as
percentage by volume of material, barrel temperature, material type and
their interactions ranges from -29.46 to 6.25 respectively. The results
obtained shows that these process parameters contribute significantly to
the production of polypropylene-grass composite.