Effect of Factors and Optimal Condition in Milling Process of Composites Using I-Optimal Experimental Design
DOI: 10.14416/j.ind.tech.2022.12.016
Keywords:
I-Optimal design, High-density polyethylene, Rubberwood sawdust, Surface roughness, Response surface methodologyAbstract
The I-Optimal experimental design was used to study the effect of factors (speed, feed rate, and depth of cut) and optimal condition on the surface roughness of wood-plastic composites (WPCs). Mixture ratios were high-density polyethylene (HDPE) with 60 percent by weight (wt%) and rubberwood sawdust (RWS) with 40 wt%. The WPC samples were prepared from the extrusion and compression molding machine. The experimental results were evaluated using analysis of variance (ANOVA) and optimized using response surface methodology (RSM). The results displayed that all of the factors significantly (p<0.05) affected on surface roughness of WPCs. The increased speed from 220 to 720 rpm resulted in a decrease for surface roughness values. In addition, it found that the increased feed rate and depth of cut resulted in increase for surface roughness values. The optimal condition for side and face milling of WPCs for all of the conditions was 720 rpm speed, 200 mm/min feed, and 3 mm depth of cut, respectively.
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