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Home  >  Volume 46 (May, 2018)

21. EXPERIMENTAL OPTIMIZATION OF CASTING PARAMETERS OF ALUMINIUM ALLOY CAST PART USING TAGUCHI DESIGN APPROACH AND TOPSIS by Mobolaji Humphrey Oladeinde and Omonigho Benedict Otanocha Volume 46 (May, 2018 Issue), pp161 –168
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EXPERIMENTAL OPTIMIZATION OF CASTING PARAMETERS OF ALUMINIUM ALLOY CAST PART USING TAGUCHI DESIGN APPROACH AND TOPSIS

Mobolaji Humphrey Oladeinde1and Omonigho Benedict Otanocha2

1Department of Production Engineering, Faculty Engineering, University of Benin, P.M.B 1221, Ugbowo, Edo State, Nigeria.

2Department of Mechanical Engineering, College of Technology, Federal University of Petroleum Resources Effurun, P.M.B 1221, Effurun, Delta State, Nigeria.

Abstract

In this study the effect of sand mould casting parameters, namely grain fineness number, amount of clay, amount of moisture and riser diameter on hardness, tensile strength and density of aluminium alloy castings was studied. While other parameters were kept constant, grain fineness number, amount of clay, amount of moisture and riser diameter are varied. Experiments are conducted based on Taguchi’s L9 orthogonal array to give nine runs (experiments) and casts specimens are tested to obtain their tensile strength, hardness and density. The results obtained are evaluated to determine the optimum process parameters at three different levels using TOPSIS method and Signal to noise (S/N) ratio. In the application of TOPSIS method the optimum levels are found as Grain fineness number of 71, 2.5 percent clay, 1.3 percent moisture and riser diameter of 25mm. while for S/N ratio the optimum levels are Grain fineness number of 72, 2.5 percent clay, 1.3 percent moisture and riser diameter of 30mm.

Keywords: Aluminium alloy, castings, Taguchi, TOPSIS, tensile strength, density, hardness 

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