Advances and Applications in Statistics
Volume 2, Issue 3, Pages 217 - 231
(December 2002)
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CAPABILITY ANALYSIS FOR AN ENTIRE PRODUCT WITH SYMMETRIC TOLERANCES
M. L. Huang (Taiwan) and Y. H. Hung (Taiwan)
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Abstract: Process Capability Analysis
(PCA)
is a powerful tool to assess the process
capability for products that meet
specifications. Chen et al. [Inter. J. Prod.
Res. 39(17) (2001), 4077-4087] modify
Singhal’s method to propose a Process Capability
Analysis Chart (PCAC) to evaluate process
capability for an entire product composed of
smaller-the-better specifications,
larger-the-better specifications and
nominal-the-best specifications. However, Cpk
cannot reflect the specific process yield.
In this paper, index Cps
is selected to replace Cpk,
existing one-to-one mathematical
relationship with the process yield. The
integrated process capability index for the
entire product is proposed. An example is given
to illustrate the application of the modified
PCAC. |
Keywords and phrases: process capability indices, process capability analysis chart, computer integrated manufacturing. |
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