Submitted to: Meeting Proceedings
Publication Type: Proceedings
Publication Acceptance Date: 8/27/2008
Publication Date: 11/17/2008
Citation: Rosentrater, K.A., Otieno, A., Melampati, P. 2008. Determination of Machining Parameters of Corn Byproduct Filled Plastics. 2008 IAJC-IJME International Conference, Nashville TN, USA, November 18-22, 2008.
Interpretive Summary: not required
Technical Abstract: In a collaborative project between the USDA and Northern Illinois University, the use of ethanol corn processing by-products as bio-filler materials in the compression molding of phenolic plastics has been studied. This paper reports on the results of a machinability study in the milling of various grades of this material. Three samples were studied; a 100%, a 75% and a 50% phenolic samples. The milling operation was carried out with a fixed depth of cut of 2.0 mm using a 12.5 mm diameter two-fluted end-mill. The cutting speed was varied between 120 and 160 m/min at feeds between 200 and 300 mm/min. Surface roughness measurements were taken after each combination of feed, speed and depth of cut. Mathematical models for surface roughness have been developed in terms of speed and feed at constant depth of cut by response surface methodology (RSM). The significance of the speed and feed on the surface roughness has been established with Analysis of Variance (ANOVA) for the three samples. The response or dependent variable was viewed as a surface to which a mathematical model was fitted with RSM. The optimum cutting condition was obtained by constructing contours of constant surface roughness using MINITAB statistical software and used for determining the optimum cutting conditions.