Design of Rectifying Screening Procedures in a Normal Model  

Oleh:

Hong, Sung Hoon ; Jung, Eun Ki ; Song, Ki Jung ; Choi, Ik Jun

Jenis: Article from Proceeding
Dalam koleksi: Asian Network for Quality (ANQ) Congress 2011, Ho Chi Minh City, Vietnam, 27-30 September 2011, page 1-13.
Topik: Performance variable; Quality inspection; Rectifying screening procedures; Screening limit; Surrogate variable
Fulltext: KSQM05.Sung Hoon, HONG_Fullpaper.pdf (226.87KB)

Isi artikel

When the measurement method for a performance variable is destructive or expensive, it is profitable to replace the performance variable with a highly correlated surrogate variable. In this paper, we propose two rectifying screening procedures using performance and surrogate variables: a statistically-based screening procedure to reduce the current proportion of nonconforming items to a specified AOQ (average outgoing quality) after screening and an economically-based screening procedure where the screening limit is determined so that the expected cost is minimized. It is assumed that the surrogate variable, which is continuous, given the performance variable, which is dichotomous, is normally distributed with known mean and variance. For the two screening procedures, methods of finding the optimum solutions are presented and numerical examples are also given.

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