Design for Six Sigma
Design for Six Sigma (DFSS) represents the second element of the Accelerated Product Development System related to improving product quality. As the words “design for” imply, DFSS strives to proactively improve product quality by preventing defects and controlling variation during the design phase of product development. Consequently, the key objectives of Design for Six Sigma are:
• Predict the quality level of new product designs
• Design quality into new products
• Improve the quality of existing products
DFSS methodology can be employed for improving product parameters of performance, product manufacturing, and reliability. The key for successful DFSS implementation is access to product data that provides insight related to the variability of these parameters. This variability represents the quality level of the product and is expressed in terms of a sigma score.
Once understood, products can be designed and the parameters of performance, manufacturing, and reliability for these new products can be predicted based on a known sigma score.
In summary, Design for Six Sigma is a powerful methodology - and is most effective when supported by real data that represents true process capability. The key is to acquire and leverage this data to maximize the benefits from DFSS for proactively improving product quality.
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