Comparison of several design augmentation strategies

Benjamin J. Nelson, Douglas Montgomery, Russell J. Elias, Eric Maass

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Industrial experiments often involve many variables, of which only a few are expected to be important. Typically a sequential design approach is used in which a screening phase is followed by a more detailed design on a subset of the variables. Screening designs are usually highly-fractionated factorials or Plackett-Burman designs; the subsequent stages usually involve folding over the Plackett-Burman design, augmenting the fractional factorials, or a completely new less-fractionated factorial using a subset of the original variables. In all of these designs, the alias structure can cause difficulties in detecting the correct model. This paper examines the foldover properties of the Plackett-Burman versus those of three-quarter fractional factorials, comparing and contrasting the efficacy of these two alternative approaches relative to convergence to an a priori known correct model. The results suggest that an initial fractional factorial (that can be subsequently extended to a three-quarter fraction) supports better model identification than the Plackett-Burmann design (with subsequent full foldover).

Original languageEnglish (US)
Pages (from-to)435-449
Number of pages15
JournalQuality and Reliability Engineering International
Volume16
Issue number5
DOIs
StatePublished - Sep 2000

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Screening
Augmentation
Identification (control systems)
Experiments
Efficacy
Experiment

ASJC Scopus subject areas

  • Management Science and Operations Research
  • Engineering (miscellaneous)

Cite this

Comparison of several design augmentation strategies. / Nelson, Benjamin J.; Montgomery, Douglas; Elias, Russell J.; Maass, Eric.

In: Quality and Reliability Engineering International, Vol. 16, No. 5, 09.2000, p. 435-449.

Research output: Contribution to journalArticle

Nelson, Benjamin J. ; Montgomery, Douglas ; Elias, Russell J. ; Maass, Eric. / Comparison of several design augmentation strategies. In: Quality and Reliability Engineering International. 2000 ; Vol. 16, No. 5. pp. 435-449.
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