Optimization of the Ductile Properties of an Arc Welded Plate Based on the Yield Strength, Elongation and Modulus of Elasticity.

Subject Areas : Strategic Management

Samuel  Sada ¹ (Department of Mechanical & Production Engineering, Faculty of Engineering, Delta State University. Nigeria.)
Joseph  Achebo ² (Department of Mechanical & Production Engineering, Faculty of Engineering, Delta State University. Nigeria.)

Received: 2020-06-30 Accepted : 2021-02-22 Published : 2021-06-01

Keywords: Optimization, welding, Modulus of elasticity, Percentage elongation,

Abstract :

As a means of controlling the setback associated with the ductile properties of the welded joint, the optimal ductile properties of a mild steel weld were studied based on empirical data generated using the metal inert gas (MIG) welding process with specific references to the yield strength, percentage elongation, poisson ratio and modulus of elasticity using the Response Surface Methodology (RSM) and Genetic Algorithm (GA). The results judging from the remarkable quality of the ductility of the weld reveals the adequacy of the yield strength, poisson ratio, and percentage elongation as key determinant in ascertaining the ductility of a weld as against the tensile strength which have been widely used in previous studies. Further analysis to determine the optimal ductile properties using the optimization techniques generated two different results which were further compared by means of a confirmatory test. The GA results recorded a more accurate optimal responses compared to the RSM having a yield strength of 270.28N/mm2, 31.01% percentage elongation, 0.359 poisson ratio, and modulus of elasticity of 1660.3N/mm2. The results not withstanding their differences reveals that manufacturers can obtain the optimal ductile weld properties using the GA and RSM techniques if the right combination of process parameters is made.

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