An Alternative View of Tolerances
Genichi Taguchi and others have suggested that traditional two-sided tolerancing is analogous to "goal posts" in a football game: It implies that all data within those tolerances are equally acceptable. The alternative is that the best product has a measurement which is precisely on target. There is an increasing loss which is a function of the deviation or variability from the target value of any design parameter. The greater the deviation from target, the greater is the loss. This is described as the Taguchi loss function or "quality loss function", and it is the key principle of an alternative system called "inertial tolerancing".
Research and development work conducted by M. Pillet and colleagues at the Savoy University has resulted in industry-specific adoption. Recently, the publishing of the French standard NFX 04-008 has allowed further consideration by the manufacturing community.
Read more about this topic: Engineering Tolerance
Famous quotes containing the words alternative and/or view:
“Our mother gives us our earliest lessons in love—and its partner, hate. Our father—our “second other”Melaborates on them. Offering us an alternative to the mother-baby relationship . . . presenting a masculine model which can supplement and contrast with the feminine. And providing us with further and perhaps quite different meanings of lovable and loving and being loved.”
—Judith Viorst (20th century)
“The contented and economically comfortable have a very discriminating view of government. Nobody is ever indignant about bailing out failed banks and failed savings and loans associations.... But when taxes must be paid for the lower middle class and poor, the government assumes an aspect of wickedness.”
—John Kenneth Galbraith (b. 1908)