Taguchi’s quality engineering

Taguchi’s Quality Engineering is a methodology developed by Japanese engineer Genichi Taguchi to improve product and process quality by reducing variability and minimizing the impact of external factors on product performance. It is based on the idea that quality can be improved by reducing variability in product design and manufacturing processes.

Taguchi’s approach to quality engineering involves three main elements:

Quality loss function: Taguchi introduced the concept of a quality loss function, which quantifies the impact of variation in product performance on customer satisfaction. The quality loss function provides a way to measure the cost of poor quality in terms of customer dissatisfaction and helps to identify critical product design parameters that affect quality.

Robust design: Taguchi emphasized the importance of designing products and processes that are robust to variations in environmental conditions and other external factors. Robust design involves identifying and controlling critical design parameters that affect product performance and reducing the impact of external factors on product quality.

Taguchi methods: Taguchi developed a set of methods for designing experiments to optimize product and process design. These methods include orthogonal arrays, signal-to-noise ratio (SNR) analysis, and parameter design. These methods help to identify the optimal combination of design parameters that will result in the best product performance with minimum variation.

Taguchi’s Quality Engineering is widely used in manufacturing and engineering industries to improve product quality, reduce costs, and increase customer satisfaction. It has been shown to be effective in reducing variability and improving product and process performance.