Numerous process capability indices, including Cp, C pk, Cpm, and Cpmk, have been proposed to provide measures on process potential and performance. Procedures using the estimators of Cp, Cpk, and Cpm have been proposed for the practitioners to use in judging whether a process meets the capability requirement. In this paper, based on the, theory of testing hypothesis, we develop a step-by-step procedure, using estimator of C pmk for the practitioners to use in making decisions. Then, the proposed procedure is applied to an audio-speaker driver manufacturing process, to demonstrate how we may apply the procedure to actual data collected in the factory.
|Number of pages||20|
|Journal||International Journal of Reliability, Quality and Safety Engineering|
|State||Published - 1 Jan 2001|
- Critical value
- Process capability index
- Testing hypothesis