L10 - Process Capability Assessment IE 330: Lecture 10...

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Unformatted text preview: Process Capability Assessment IE 330: Lecture 10 2/11/2008 First midterm and other issues Midterm 1, a week from today Covers lecture notes 1-10 (includes today) Sample test posted Workshop 1 is also due next week HW 5: study problems and assigned problems Outline (Process Capability Assessment) Distinction between specification and SPC Consequences of excessive common- cause variation Loss function approach Consequences of failure to establish statistical control Process Capability vs Process Control Two important issues regarding the performance of a process 1. Produce parts that conform to specs 2. State of good statistical control Control does not imply conformance Control is necessary prerequisite for conformance Does not make sense to measure capability without control Process Capability: Individual measurements SPC: Summary statistics from each sample, X-bar and R Do not compare or confuse the limits Never place tolerance/spec limits on an X-bar chart Reveals better than actual performance Process Capability vs Process Control ....
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This note was uploaded on 05/01/2008 for the course IE 330 taught by Professor Tezcan during the Spring '08 term at University of Illinois at Urbana–Champaign.

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L10 - Process Capability Assessment IE 330: Lecture 10...

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