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Solution of Correlated Multi-Response Optimization Problem: Case Study in Submerged Arc Welding

Solution of Correlated Multi-Response Optimization Problem: Case Study in Submerged Arc Welding

Saurav Datta, Goutam Nandi, Asish Bandyopadhyay, Pradip Kumar Pal
Copyright: © 2010 |Volume: 1 |Issue: 4 |Pages: 25
ISSN: 1947-9328|EISSN: 1947-9336|EISBN13: 9781613502983|DOI: 10.4018/joris.2010100102
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MLA

Datta, Saurav, et al. "Solution of Correlated Multi-Response Optimization Problem: Case Study in Submerged Arc Welding." IJORIS vol.1, no.4 2010: pp.22-46. http://doi.org/10.4018/joris.2010100102

APA

Datta, S., Nandi, G., Bandyopadhyay, A., & Pal, P. K. (2010). Solution of Correlated Multi-Response Optimization Problem: Case Study in Submerged Arc Welding. International Journal of Operations Research and Information Systems (IJORIS), 1(4), 22-46. http://doi.org/10.4018/joris.2010100102

Chicago

Datta, Saurav, et al. "Solution of Correlated Multi-Response Optimization Problem: Case Study in Submerged Arc Welding," International Journal of Operations Research and Information Systems (IJORIS) 1, no.4: 22-46. http://doi.org/10.4018/joris.2010100102

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Abstract

This paper highlights an integrated approach to solve the correlated multi-response optimization problem through a case study in submerged arc welding (SAW). The proposed approach has been presented to overcome different limitations and drawbacks of existing optimization techniques available in literature. Traditional Taguchi optimization technique is based under the assumption that quality responses are independent to each other; however, this assumption may not always be valid. A common trend in the solution of a multi-objective optimization problem is to convert these multi-objectives into an equivalent single objective function. While deriving this equivalent objective function, different weightage are assigned to different responses according to their relative priority. In this regard, it seems that no specific guideline is available for assigning individual response weighs. To avoid this, Principal Component Analysis (PCA) has been adopted to eliminate correlation among individual desirability values and to calculate uncorrelated quality indices that have been aggregated to calculate overall grey relational grade. This study combines PCA, Desirability Function (DF) approach, and grey relation theory to the entropy measurement technique. Finally, the Taguchi method has been used to derive optimal process environment capable of producing desired weld quality related to bead geometry.

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