Lecture 7 - Quality Control Purpose of QC To assure that...

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Quality Control Purpose of QC To assure that the process is performing in an acceptable manner Done through monitoring the process via inspection Quality Assurance Relies on inspection Inspection after production (acceptance sampling) Inspection during production (statistical process control, or SPC) Basic Issues in Inspection: 1) How much and how often to inspect 2) At what points in the process to inspect 3) Whether to inspect in a centralized or on-site location 4) Whether to inspect attributes (counting something) or variables (measure something) Where to inspect: Raw materials and purchased parts Finished products Before a costly operation Before an irreversible process Before covering a process Key Concepts: Variation is the enemy of quality Every process exhibits some form of variation The degree of this variation is a measure of the capability of the process Process variation can be classified as: o common cause variation - inherent in system o special cause variation - presence is detected using SPC
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This note was uploaded on 04/03/2012 for the course BAIT 386 taught by Professor Avi-itzchak during the Spring '12 term at Rutgers.

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Lecture 7 - Quality Control Purpose of QC To assure that...

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