Statistical Quality ControlIt has recently become apparent that "quality" is quickly becoming the single most important factor for success and growth in business. Companies achieving higher quality in their products through effective quality improvement programs enjoy a significant competitive advantage. It is, therefore, essential for engineers responsible for design, devel |
Contents
| 1 | |
| 5 | |
Chapter 3 Loss Function | 53 |
Chapter 4 Process Capability | 83 |
Chapter 5 Measurement Error | 119 |
Chapter 6 Optimum Process Level | 131 |
Chapter 7 Process Setting | 157 |
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Common terms and phrases
acceptance adjustment assembly characteristic assume assumption average blocks called chart collected combinations components computed consider contains control limits cost Cpk index defining degrees of freedom denoted derive developed diameter difference earlier effects equal equation error estimate Example expected cost experiment expression factor factorial design falls Figure formulas fractional function given Hence interaction interval length lower machine manufacturing mean measurement method minimize nominal normally distributed number of defects objective observations obtained operator optimal optimum parameters possible probability problem process capability proportion of defectives quality characteristic random range rejection relationship Replication respectively sample batch seen selected specification limits standard deviation step sum of squares Table target value test statistic tion tolerance treatment unit upper variable variance variation