European Journal of Material Sciences

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Minimization Comparison of Surface Roughness Drilling Value of Mild Steel, Stainless Steel and Brass: An Application of One-Way Anova Technique


The study investigated on minimization comparison of surface roughness drilling value of mild steel, stainless steel and brass using one-way analysis of variance (ANOVA) technique so as to check for significant difference between the workpiece in their value of surface roughness using the same process parameters irrespective of their material properties. The experimental data used in the comparison were conducted nine (9) times for each of the workpiece. The descriptive statistics and the Tukey post hoc test of the ANOVA revealed that there were no statistically significant differences between the minimization surface roughness value of mild steel, stainless steel and brass. The result implies that irrespective of the material properties of the workpiece under the same process parameters condition, there are equal significant variation of surface roughness on mild steel, stainless steel and brass. The study concludes that regardless of the material properties for machining investigation using the same parameters, it is possible to have the same quality effect of surface roughness in terms of it minimization target.

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