IJPAM: Volume 20, No. 4 (2005)

TESTING INTEGRATED PROCESS CAPABILITY
FOR A MULTI-CHARACTERISTICS PRODUCT

Shey-Huei Sheu$^1$, Kun-Tzu Yu$^2$
$^{1,2}$Department of Industrial Management
National Taiwan University of Science and Technology
#43, Sec. 4, Keelung Rd., Taipei, 106, TAIWAN, R.O.C.
$^1$e-mail: [email protected]
$^2$e-mail: [email protected]


Abstract.Process capability indices (PCIs) can be viewed as effective and excellent means of measuring product quality and performance. In recent years, most studies are limited to test the process capability of one single quality characteristic, but they are not sufficient for testing the process capability of an entire product with multi-characteristics. In this paper, we apply the well-known index C$_{pm}$ to propose an integrated product capability index which considers numerical quality characteristics with bilateral specifications. We further show a theorem, which helps us to develop a testing procedure of the integrated product capability index for judging whether the process capabilities of total quality characteristics meet the customer's demands. In addition, the relationship between the integrated product capability index and the yield of the entire product are introduced.

Received: March 17, 2005

AMS Subject Classification: 90A11, 90A16

Key Words and Phrases: multi-characteristics product, process capability index, hypothesis testing

Source: International Journal of Pure and Applied Mathematics
ISSN: 1311-8080
Year: 2005
Volume: 20
Issue: 4