Box-Behnken Design Optimization of Sand Casting Process Parameters

Year 2020, Volume: 6 Issue: 2, 25 - 36, 31.10.2020

Blessıng Ngozı Goodluck Alıemeke , M. Oladeinde

https://doi.org/10.19072/ijet.714473

Cited By: 6

Abstract

Sand casting is reputed for the manufacture of engine components as a result of its ease of operation. An assemblage of process parameters at optimal conditions leads to enhanced mechanical properties of automobile engine components. The Response Surface Methodology Design of experiment created an experimental layout for the sand casting process parameters and the various levels as applied in the production of engine pistons at the foundry. The Box-Behnken Design provided a matrix of 27 experiments to be conducted. Multiple linear Regression technique was employed to develop a mathematical model for the hardness of the aluminium alloy. The developed model was inputted into the evolutionary Genetic Algorithm tool box as an objective model. The optimal levels determined from the Genetic algorithm were used to carry out actual experiment in the foundry and the result was similar to the predicted hardness value of the developed model. Statistical ANOVA test conducted showed that the mathematical model was adequate with a R2 value of 81.02% and R2 (adjusted) value of 60.07%. The developed model has a p-value of 0.016 which indicates that the model was significant. The optimal values obtained for pouring temperature, vibration frequency, vibration time and runner size are 700oC, 31.52Hz, 59.998sec and 469.69mm2 respectively.

Keywords

sand casting, Box-Behnken, Genetic algorithm, Statistical ANOVA

Supporting Institution

Auchi Polytechnic, Nigeria

Project Number

1

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