The manufacture of products to a consistent level of quality is of major concern to Western industry. In one company, the tangible cost of ensuring product quality has been estimated to be 7.5 per cent of sales. These costs include scrap, rectification, returns, inspection, calibration, audits and procedures. To this must be added the intangible costs of disruption to production, loss of machine capacity, management costs, change campaign costs, customer dissatisfaction, damage to reliability image and loss of reputation. These could well amount to an additional 7.5 per cent of sales. Product and process quality are subject to manifactors, some of which are relatively easy to contorl and others which are difficult or impossible to control. The Taguchi methodology aims to find the settings of the controllable factors that will minimise the susceptibility of the product or process quality to variations in the uncontrollable factors. This paper describes a knowledge-based system to design the experiments to determine those settings.
A knowledge-based system for product and process quality
Ein Expertensystem zur Sicherung der Produkt- und Fertigungsqualität
1989
3 Seiten, 1 Quelle
Conference paper
English
A knowledge-based system for product and process quality
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