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OPTIMIZATION OF GAS TUNGSTEN ARC WELDING PARAMETERS ON PENETRATION DEPTH AND BEAD WIDTH USING TAGUCHI METHOD

Muhammad Ibrahim1, ShahidMaqsood1, Rafiullah Khan2, Muhammad Amjad2, SakhiJaan2 

1 Department of Industrial Engineering, University of Engineering and Technology, Peshawar, Pakistan
2 Department of Mechanical Engineering, International Islamic University, Islamabad, Pakistan 

ABSTRACT

The objective of this paper is the optimization of the gas tungsten arc welding parameters on penetration depth
and bead width. Taguchi L25 orthogonal array was used for the design of experiments. Welding experiments were
performed on stainless steel specimens. Pilot experimentations were conducting to define the range of variables.
Optimal parameters were determined through signal to noise (S/N) ratio approach. Significant factors have been
determined through analysis of variance approach. The results showed that the penetration depth and bead width
were increased with increase in current and decrease with increase in torch speed. It was concluded that the arc
current is the significant factor for both the response parameters while torch angle is significant only for bead width.
The results have been verified through confirmation test for each response parameter. 

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Journal of Engineering and Applied Sciences

December

Vol. 42, pp. 01-48

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