A Graphical Approach for Interpreting Out-of-Control Signals in Multivariate Control Charts Universidade Federal do Oeste da Bahia - UFOB

Format:

Book

Conference/Event

Author/Creator:

Pargas Carmona, Luis Alberto, author.

Conference Name:

2019 SAE Brasil Congress & Exhibition (2019-10-14 : Sao Paulo, Brazil)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2020

Summary:

Dealing with several variables simultaneously is not a simple task for quality engineers because the interpretation of out-of-control signals involves the examination of the data from a multivariate perspective. In this paper, a graphical technique for interpreting out-of-control signals in multivariate control charts is proposed. This approach consists of a typical Hotelling's chart with warning labels indicating:1) the univariate out-of-control points often masked by the T-squared statistic; 2) the plane of the biplot that should be investigated to identify the cause of the signal. The idea of using biplots as a complementary tool is to provide a broader view of the data without adding much complexity to the analysis. Finally, the benefits of this are shown through a case example of an automotive body assembly process

Notes:

Vendor supplied data

Publisher Number:

2019-36-0068

Access Restriction:

Restricted for use by site license