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:
“If English is spoken in heaven ... God undoubtedly employs Cranmer as his speechwriter. The angels of the lesser ministries probably use the language of the New English Bible and the Alternative Service Book for internal memos.”
—Charles, Prince Of Wales (b. 1948)
“Who claims that the heathen’s view of the world is incorrect? Life gives you nothing! It is ruled by false gods! Nothing remains true to you but your own self; provided you remain true to it.”
—Franz Grillparzer (1791–1872)