Quality Design and Control

Process and Quality Management

Chapter 3 Quality Design and Control
1. QFD/House of Quality pg. 111-115: Construct a simple house of quality for a simple product or service of your choice (a few examples: backpack, stapler, headphones, cup of coffee, eyeglass repair). Limit your house of quality to 3-5 customer attributes (a.k.a. VOC) and 3-5 technical features (a.k.a. VOE). Competitive evaluation is not necessary.

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2. DFMEA pg. 115-6: Consider design of a typical household refrigerator. Identify three different ways the system may fail. What could be the magnitude and are three possible effects of each failure?

3. Poka-Yoke pg. 122-3: (a) Identify ten examples of poka-yoke in everyday products. Hint: automobiles provide dozens of examples. (b) Visit http://www.mistakeproofing.com/ and identify three examples of poka-yoke you consider excellent (Examples link) and three examples of bad design (Bad Design link) you find interesting.

4. SPC pg. 130 and 166-8: The following chart identifies 15 samples, in order, from bottle station #2 of Tipsy Vineyards Cabernet Sauvignon. The target level is 750ml, with UCL=760 and LCL=740.


a. Draw a process control chart
b. Did defects occur?
c. Is there only ‘normal cause’ variation or is there evidence of ‘special cause’ variation. Justify your answer.
d. In general terms, what should be done to improve the process?

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