Simultaneous inspection of several product characteristics

W. Albers, G.R.J. Arts, W.C.M. Kallenberg

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    In this paper we consider the inspection of a product of which several characteristics have to satisfy given specification limits. A problem which occurs in the inspection process quite often is that a measurement error occurs in measuring the characteristics. Therefore, it is common practice to inspect each characteristic by comparing its measurement to a test limit which is slightly more strict than the corresponding specification limit. An item then is accepted if for each characteristic the measurement conforms to the corresponding test limit. However, instead of inspecting an individual characteristic merely using its own measurement, it is (much) more efficient to use the measurements of the other characteristics as well, especially if some of the characteristics are highly correlated. In this paper it is shown how the measurements of all the characteristics can be used to test whether an item is conforming.
    Original languageEnglish
    Place of PublicationEnschede
    PublisherUniversity of Twente, Faculty of Mathematical Sciences
    Number of pages22
    Publication statusPublished - 1998

    Publication series

    NameMemorandum / Faculty of Applied Mathematics
    PublisherUniversity of Twente, Faculty of Mathematical Sciences
    ISSN (Print)0169-2690


    • MSC-62H20
    • MSC-62N10


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