Mixed two- and four-level experimental designs for interchangeable parts with different degrees of assembly difficulty
Purpose – The purpose of this paper is to show how to properly use the method of replacement to construct mixed two- and four-level minimum setup split-plot type designs to accommodate the presence of hard-to-assemble parts. Design/methodology/approach – Split-plot type designs are economical app...
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| Principais autores: | , , |
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| Formato: | article |
| Idioma: | eng |
| Publicado em: |
International journal of quality & reliability management
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| Assuntos: | |
| Endereço do item: | https://repositorio.ufrn.br/jspui/handle/123456789/25454 |
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| Resumo: | Purpose – The purpose of this paper is to show how to properly use the method of replacement to
construct mixed two- and four-level minimum setup split-plot type designs to accommodate the presence of
hard-to-assemble parts.
Design/methodology/approach – Split-plot type designs are economical approaches in industrial
experimentation. These types of designs are particularly useful for situations involving interchangeable
parts with different degrees of assembly difficulties. Methodologies for designing and analyzing such
experiments have advanced lately, especially for two-level designs. Practical needs may require the inclusion
of factors with more than two levels. Here, the authors consider an experiment to improve the performance of
a Baja car including two- and four-level factors.
Findings – The authors find that the direct use of the existing minimum setup maximum aberration (MSMA)
catalogs for two-level split-plot type designs may lead to inappropriate designs (e.g. low resolution).
The existing method of replacement for searching exclusive sets of the form (α, β, αβ) available in the
literature is suitable for completely randomized designs, but it may not provide efficient plans for designs
with restricted randomization.
Originality/value – The authors provide a general framework for the practitioners and have extended the
algorithm to find out the number of generators and the number of base factor at |
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