Prediction of Weld Bead Geometry in Plasma Arc Welding using Factorial Design Approach

Abstract

The effect of various process parameters like welding current, torch height, welding speed and plasma gas flow rate on front melting width, back melting width and weld reinforcement of plasma arc welding on aluminum alloy is investigated by using factorial design approach. Variable polarity plasma arc welding is used for welding aluminum alloy. Trail experiments are conducted and the limits of the input process parameters are decided. Two levels and four input process parameters are chosen and experiments are conducted as per typical design matrix considering full factorial design. Total sixteen experiments are conducted and output responses are measured. The coefficients are calculated by using regression analysis and the mathematical models are constructed. By using the mathematical models the main and interaction effect of various process parameters on weld quality is studied.

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K. Prasad, C. Rao and D. Rao, "Prediction of Weld Bead Geometry in Plasma Arc Welding using Factorial Design Approach," Journal of Minerals and Materials Characterization and Engineering, Vol. 10 No. 10, 2011, pp. 875-886. doi: 10.4236/jmmce.2011.1010068.

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1] Howard Cary. B, 1979, Modern Welding Technology, Prentice Hall Inc, Englewood Cliffs, NJ.
[2] H.X.Wang, Y.H.Wei, C.L.Yang, 2007, Numerical simulation of variable polarity vertical-up plasma arc welding, J. Computational Materials Science, 38,pp.571- 587.
[3] Roberts DK, Wells AA, 1954, Fusion welding of aluminum alloys Br, Weld J, 12: pp.553-559.
[4] ASM Handbook, 1993, welding, brazing and soldering, vol.6.ASM, USA.
[5] V.K.Guptha, R.S.Parmar, 1989, Fractional factorial technique to predict dimensions of the weld bead in automatic submerged arc welding, J. Inst.Eng. (India), pp.67-70.
[6] G. Cohran, M. Cox, 1963, Experimental Designs, Asia Publishing House, India.
[7] Nouri M, Abdollah-zadehy A, Malek F, 2007, Effect of welding parameters on dilution and weld bead geometry in cladding. J Mater Sci Technol, 23(6), pp. 817-822.
[8] J.P.Ganjigatti, D.K.Prathhar, A.Roy Choudary, 2008,Modeling of the MIG welding Process using stastical approaches IntJ Adv Manuf Technol, 35, pp. 1166-1190.
[9] Montgomery dc, 1997, Design and analysis of Experiments, 4th edition, Wiley, NewYork.

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