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A new insight into the Taguchi method.

Y Leysi-Derilou¹, J Antony

¹Quality and Reliability, School of Engineering, University of Warwick, UK

Quality Assurance (San Diego, Calif.)

|December 6, 2002

Summary

This study introduces a novel Taguchi method approach to evaluate factor ratios as a new factor within orthogonal arrays. This enhances the Design of Experiments for optimizing product quality, cost, and time.

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Area of Science:

Engineering
Industrial Engineering
Quality Management

Background:

Achieving high-quality products at low cost and short timeframes presents a significant engineering challenge.
The Taguchi approach to Design of Experiments (DOE) is a recognized method for addressing these objectives.
Standard DOE methods may not adequately address scenarios where the ratio of factor levels is critical.

Purpose of the Study:

To introduce a modified Taguchi method for incorporating the ratio of two factors as a new, distinct factor.
To demonstrate how to select appropriate levels to evaluate this factor ratio within existing orthogonal arrays.
To present a case study validating the effectiveness of this enhanced Taguchi method.

Main Methods:

The study utilizes the Taguchi approach to Design of Experiments.
A novel method is proposed to treat the ratio of two factors as a single new factor.
An L9 orthogonal array is employed to design an experiment with four three-level factors, including the ratio factor.

Main Results:

The proposed method allows for the evaluation of the ratio of two factors within the same orthogonal array as other factors.
A case study successfully illustrates the application of this technique.
The methodology enables efficient analysis of factor interactions and ratios.

Conclusions:

The modified Taguchi method offers a powerful tool for engineers to optimize processes by considering factor ratios.
This approach enhances the efficiency and effectiveness of Design of Experiments.
It provides a systematic way to improve product quality, reduce costs, and shorten development times.

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