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Measuring Process
Capability: Techniques and
Calculations for Quality and Manufacturing Engineers
Bothe,
Davis R.
899 pages. ISBN 0-07-006652-3. 7 x 9 Softcover. 2001.
$130.00
Most manufacturers talk about the importance of providing customer satisfaction, but very few actually measure how they achieve this. One method for quantifying how well a process meets customer requirements is to measure its inherent capability. The author draws heavily on his twenty-four years of industrial experience to explain how process capability can be assessed for almost every type of process (machining and assembly, discrete and continuous), including those generating variable data (with either a normal or non-normal output distribution) or attribute data. More than seventy different capability measures are included, with plenty of real-life case studies to demonstrate the proper application and interpretation of these techniques. Flowcharts aid in the correct application of these methods and help you choose the best capability measure.
In addition, the book contains several unique measures to deal with special situations not covered in any other text: unilateral specifications; cases where the target for the process average is not the middle of the tolerance; short production runs; auto correlated data; GD&T; tool wear; setup variation; and products having within-piece variation. An extensive list of references is provided at the end of each chapter for those interested in pursuing advanced study. This definitive text clearly explains how the correct application of capability measures can benefit shop floor personnel, managers, and customers.
