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Optimization of Welding Dissimilar sheet metals using Taguchi and Grey based Taguchi Methods
The scope of the present investigation is to find optimal input parameters of gas metal arc welding (GMAW) for joining two different sheets of steel. A butt joint is made from thin stainless steel SS304 and Mild steel AISI1008 of dimension 60mm×300mm×1.5mm. The L16 orthogonal array was used as the design of experiment (DOE) and a self-built CNC machine is used to fully automate the welding process. Single-objective optimization is performed using the Taguchi method and a multi-objective optimization model is developed by Grey based Taguchi method. The observations emphasize the significance of tensile strength and hardness of the welded joint. The joint characteristics are found to be improved by 7% using the optimized parameters. The percentage of contribution by input parameters is assessed using ANOVA. Wire feed rate and weld current are found to be the most influencing parameters. Furthermore, the microstructural analysis connotes the presence of courser martensite and ferrite in the heat affected zone making them vulnerable to fracture.
Optimization of Welding Dissimilar sheet metals using Taguchi and Grey based Taguchi Methods
The scope of the present investigation is to find optimal input parameters of gas metal arc welding (GMAW) for joining two different sheets of steel. A butt joint is made from thin stainless steel SS304 and Mild steel AISI1008 of dimension 60mm×300mm×1.5mm. The L16 orthogonal array was used as the design of experiment (DOE) and a self-built CNC machine is used to fully automate the welding process. Single-objective optimization is performed using the Taguchi method and a multi-objective optimization model is developed by Grey based Taguchi method. The observations emphasize the significance of tensile strength and hardness of the welded joint. The joint characteristics are found to be improved by 7% using the optimized parameters. The percentage of contribution by input parameters is assessed using ANOVA. Wire feed rate and weld current are found to be the most influencing parameters. Furthermore, the microstructural analysis connotes the presence of courser martensite and ferrite in the heat affected zone making them vulnerable to fracture.
Optimization of Welding Dissimilar sheet metals using Taguchi and Grey based Taguchi Methods
Devaraj, Jeyaganesh (author) / Ziout, Aiman (author) / Qudeiri, Jaber Abu (author)
2022-02-21
1893674 byte
Conference paper
Electronic Resource
English