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Journal of Applied Sciences
  Year: 2009 | Volume: 9 | Issue: 20 | Page No.: 3775-3779
DOI: 10.3923/jas.2009.3775.3779
 
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New Process Capability Index using Taguchi Loss Functions

M. Abdolshah, R.M. Yusuff, T.S. Hong and M. Yusof B. Ismail

Abstract:
Classic process capability indices such as Ca, Cp and Cpk are well-known process capability indices, which are using widely. Since, process capability indices predict the capability of a process, they must have a significant relation with rate of rejects and losses. Studies showed that mostly process capability indices do not have a significant relation with rate of rejects or losses. Therefore, the loss-based indices are more appropriate and suitable indices to predict the capability of a process. In order to define a new loss-based process capability index, Taguchi loss functions were employed and this study proposed a novel process capability index called Taguchi-based Process Capability Index (TPCI). The methodology of this process capability index is based on standard rate of rejects for a capable process compared to other cases. Therefore, this study develops a new process capability index, which is Taguchi loss function-based and sensitive to losses. This new process capability index can provide a realistic and applicable metric to evaluate a process.
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How to cite this article:

M. Abdolshah, R.M. Yusuff, T.S. Hong and M. Yusof B. Ismail, 2009. New Process Capability Index using Taguchi Loss Functions. Journal of Applied Sciences, 9: 3775-3779.

DOI: 10.3923/jas.2009.3775.3779

URL: https://scialert.net/abstract/?doi=jas.2009.3775.3779

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