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Early Design Stage Reliability Analysis Using Function-Flow Failure Rates

[+] Author Affiliations
Bryan M. O’Halloran, Robert B. Stone, Irem Y. Tumer

Oregon State University, Corvallis, OR

Paper No. DETC2011-48823, pp. 455-464; 10 pages
doi:10.1115/DETC2011-48823
From:
  • ASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 9: 23rd International Conference on Design Theory and Methodology; 16th Design for Manufacturing and the Life Cycle Conference
  • Washington, DC, USA, August 28–31, 2011
  • Conference Sponsors: Design Engineering Division and Computers and Information in Engineering Division
  • ISBN: 978-0-7918-5486-0
  • Copyright © 2011 by ASME

abstract

In this paper, failure rates for function-flow pairs are presented. This data creates an opportunity for the designer to move reliability analysis earlier in the design process. The function-flow failure rates can be used to make design decisions before components are selected giving the designer increased knowledge to explore alternative options. A reliability block diagram approach has been adopted to evaluate the reliability of three designs at both the functional and component level. The results show that the bounds from the functional reliability overlap those of the component reliability.

Copyright © 2011 by ASME

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