## Who was Genichi Taguchi?

Taguchi is considered the “Father of Quality Engineering.”

“Quality is related to the financial loss to society caused by a product during its life

cycle.”

## What Was Taguchi’s System:

Starts with conception, through design, and into production.

- Discuss Taguchi’s quality imperatives
- Discuss different approaches to loss function
- Learn how to use orthogonal arrays in designs
- Identify the goal of randomization

- Taguchi: Uses orthogonal (balanced) arrays, but are types of fractional factorial designs
- Identify Taguchi robustness concepts
- Learn three design considerations
- Discuss Signal/Noise (S/N) ratios

## Taguchi’s Quality Imperatives

- Quality losses are a loss to society
- Robustness is a function of product design
- Robust products have a strong signal to noise ratio
- tolerances should be set prior to manufacturing

## What is Taguchi’s Loss Function

### When would you use Taguchi’s loss function?

### Example of Using Taguchi’s loss function in DMAIC

Apply Taguchi robustness concepts and techniques such as signal-to-noise ratio, controllable and noise factors, and robustness to external sources of variability.

### Additional Helpful Loss Function Resources

## Taguchi Robustness

### What is Taguchi Robust Design?

Describe the elements of robust product design, tolerance design and statistical tolerancing.

### When would you use Taguchi’s Robust Design?

During the design and analysis of two-level fractional factorial experiments

### Example of Using Taguchi’s Robust Design in DMAIC

Construct experiments and apply computational and graphical methods to analyze and evaluate the significance of results.