OPTIMIZATION OF WELDING PROCESS PARAMETERS USING TAGUCHI – UTILITY CONCEPT APPROACH

ABSTRACT

This study is aimed at applying novel multipurpose optimization tools to welding science. These tools  aid  in  the  selection  of optimum process  parameters,  and optimum process parameters are responsible for the improvement in the quality of weld metal. The novel tool utilise here is the Taguchi-Utility concept approach.

This hybrid approach uses the signal to noiseratio, ANOVA table and a confirmatory test method to determine the most economically desired process parameters. In this study, the optimum process parameters obtained is I2V1Wd2GFR1  with a prediction error of 5.29dB. This means that for the existing process parameter with 5.29Db. To confirm the validity of the optimum process parameters, the estimated average at both the single and multi response state of the process parameters were found to be within the predicted range of 95% confidence level. The additive law equation was used to generate the predictive value that was used to determine the performance of the process parameters. This study has proven that the Taguchi-Utility concept approach can be used to successfully optimize welding process parameters.