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Kunert, Joachim
Auer, Corinna
Erdbrügge, Martina
Göbel, Roland
Year of Publication: 
Series/Report no.: 
Technical Report 2003,13
The paper reports a robust parameter design experiment, where we have used Taguchi's product array and a combined array simultaneously. This was done as part of a research project dealing with experimental design to optimise the process of sheet metal spinning. We found that the classical analysis of the product array identified a control factor, which has an influence on the variance of the response. There were no indications of this effect in the combined array. A confirmation experiment supports the finding that this factor in fact is a control factor. It seems that its effect on the variance is due to several two- and three-factor interactions that were not large enough to be found in the combined array. In the authors' opinion this shows that the use of a product array and the classical analysis provides robustness against imprecise model assumptions.
Robust parameter design
noise factor
design factor
signal to noise ratio
product array
combined array
interaction plot
Document Type: 
Working Paper

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