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Applicability and Limitations of Reliability Allocation MethodsReliability allocation process may be described as the process of assigning reliability requirements to individual components within a system to attain the specified system reliability. For large systems, the allocation process is often performed at different stages of system design. The allocation process often begins at the conceptual stage. As the system design develops, more information about components and the operating environment becomes available, different allocation methods can be considered. Reliability allocation methods are usually divided into two categories: weighting factors and optimal reliability allocation. When properly applied, these methods can produce reasonable approximations. Reliability allocation techniques have limitations and implied assumptions that need to be understood by system engineers. Applying reliability allocation techniques without understanding their limitations and assumptions can produce unrealistic results. This report addresses weighting factors, optimal reliability allocation techniques, and identifies the applicability and limitations of each reliability allocation technique.
Document ID
20160013858
Document Type
Technical Memorandum (TM)
Authors
Cruz, Jose A.
(NASA Glenn Research Center Cleveland, OH United States)
Date Acquired
November 30, 2016
Publication Date
November 1, 2016
Subject Category
Statistics And Probability
Report/Patent Number
GRC-E-DAA-TN20943
NASA/TM-2016-218488
E-19040
Funding Number(s)
WBS: WBS 432938.10.02.03.11
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Keywords
Reliability allocation
Reliability allocation methods
Reliability

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