Title: Incorporating process capability index and quality loss function into analyzing the process capability for qualitative data
Authors: Hsieh, KL
Tong, LI
工業工程與管理學系
Department of Industrial Engineering and Management
Keywords: process capability analysis (PCA);process capability indexes (PCIs);qualitative data;quality loss function (QLF)
Issue Date: 1-Feb-2006
Abstract: Process capability analysis (PCA) is frequently employed to evaluate a product or a process if it can meet the customer's requirement. In general, process capability analysis can be represented by using the process capability index (PCI). Until now, the PCI was frequently used for processes with quantitative characteristics. However, for process quality with the qualitative characteristic, the data's type and single specification caused limitations of using the PCI. When the product can not meet the target, even if it lies in the specified range, it should lead to the corresponding quality loss. Taguchi developed a quadratic quality loss function (QLF) to address such issues. In this study, we intend to construct a measurable index which incorporates the PCI philosophy and QLF concept to analyze the process capability with the consideration of the qualitative response data. The manufacturers can not only employ the proposed index to self-assess the process capability, but they also can make comparisons with the other competitors .
URI: http://dx.doi.org/10.1007/s00170-004-2314-1
http://hdl.handle.net/11536/12670
ISSN: 0268-3768
DOI: 10.1007/s00170-004-2314-1
Journal: INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
Volume: 27
Issue: 11-12
Begin Page: 1217
End Page: 1222
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