lecture25 - 2.852 Lecture 25: An Integrated...

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2.852 Lecture 25: An Integrated Quality/Quantity Model of a Transfer Line Jongyoon Kim Stanley B. Gershwin Copyright    2003 Jongyoon Kim, Stanley B. Gershwin All right reserved. c
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Copyright 2003 Jongyoon Kim, Stanley B. Gershwin All rights reserved c AGENDA AGENDA 1. Motivation 2. Research Objectives 3. Research Directions 4. Model Descriptions 5. Preliminary Results 6. Future Research Plan
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Copyright 2003 Jongyoon Kim, Stanley B. Gershwin All rights reserved c MOTIVATION MOTIVATION “Effective implementation of quality program leads to significant  wealth creation.” (38% to 46% of higher stock value)* “At 3 sigma level, quality cost accounts for   25 – 40% of  Revenue.”** “A dissatisfied customer will tell 9 to 10 people about an unhappy  experience, even if the problem is not serious.”*** *Hendricks and Singhal, Management Science **Harry and et al., “6 Sigma” ***Pande, Holpp, “What is 6 Sigma?” Goal: Perfect Quality!  Quality
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Copyright 2003 Jongyoon Kim, Stanley B. Gershwin All rights reserved c System Effect on Quality Design and control of production system have significant  impact on product quality” * *Inman et al., General Motors R&D center ** Smith, Wards Auto World, July 2001 *** Monden, Toyota Production System  Jaguar ** After Ford acquired Jaguar, Jaguar’s quality improved rapidly.   Product design wasn’t changed, but production system     changed.  Toyota *** Numerous study show that Toyota’s particular attention to the  production system’s impact on quality MOTIVATION MOTIVATION
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Copyright 2003 Jongyoon Kim, Stanley B. Gershwin All rights reserved c MOTIVATION MOTIVATION Quality, Quantity and Production System Design *Womack, et al. (1990) Machine that changed the world Is there any relationships among quality, productivity, and      production system design? If then, can we quantify them?
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Copyright 2003 Jongyoon Kim, Stanley B. Gershwin All rights reserved c MOTIVATION MOTIVATION Toyota Production System Does reduction of inventory lead to higher quality? Does  JIDOKA  (stopping the lines whenever  abnormalities occur) improve quality and productivity  in every case? Scientific conceptual and computational model is needed. Existing arguments about this are based on anecdotal experience or  qualitative reasoning that lack sound scientific foundation.
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Copyright 2003 Jongyoon Kim, Stanley B. Gershwin All rights reserved c Gain in-depth understanding to investigate how  manufacturing system design and operations  simultaneously influence quality and productivity. RESEARCH RESEARCH OBJECTIVE OBJECTIVE Mission
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Copyright 2003 Jongyoon Kim, Stanley B. Gershwin All rights reserved c MOTIVATION MOTIVATION System Yield System yield  is the fraction of production that is of acceptable  quality.
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This note was uploaded on 02/24/2012 for the course ENGINEERIN 2.852 taught by Professor Stanleyb.gershwin during the Spring '04 term at MIT.

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lecture25 - 2.852 Lecture 25: An Integrated...

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