Review of maintainability design principles and their application to conceptual design
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Publication Details
Author list: Tjiparuro Z, Thompson G
Publisher: SAGE Publications (UK and US)
Place: BURY ST EDMUNDS
Publication year: 2004
Journal: Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering (0954-4089)
Journal acronym: P I MECH ENG E-J PRO
Volume number: 218
Issue number: E2
Start page: 103
End page: 113
Number of pages: 11
ISSN: 0954-4089
eISSN: 2041-3009
Languages: English-Great Britain (EN-GB)
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Abstract
The life cycle cost of a system is, to a large extent, influenced by its maintainability. Besides being a statistical concept, maintainability is a design parameter whose achievement is influenced by known elements and attributes. However, these elements and attributes appear far and wide in literary sources. This paper consolidates these elements and attributes by reconciling and developing previous research efforts. It also shows how these attributes interact with each other to influence major maintainability indices such as mean time to repair (MTTR), maintenance policy, and others. It is also further argued that the conventional tendency of 'handpicking' certain attributes to assess maintainability is to a great extent ad hoc, and it is shown how it could be rationalized. Finally, it is observed that the number and diversity of these requirements makes their assessment during conceptual design impossible because of 'cognitive overload'. Therefore, an approach to maintainability analysis during conceptual design, based on the concept of functional design and maintainability axioms, is proposed.
Keywords
conceptual design, design for maintainability, maintainability axioms, requirements
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