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Material variability and repetitive member allowable property adjustments in forest products engineeringAuthor(s): Steve Verrill; David Kretschmann
Source: Research Paper FPL-RP-649. Madison, WI: U.S. Department of Agriculture,Forest Service, Forest Products Laboratory. 36 pages.
Publication Series: Research Paper (RP)
Station: Forest Products Laboratory
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DescriptionIt has been argued that repetitive member allowable property adjustments should be larger for high-variability material than for low-variability material. We report analytic calculations and simulations that suggest that the order of such adjustments should be reversed. That is, given the manner in which allowable properties are currently calculated, as the coefficient of variation of the strength distribution of individual elements increases, the upward repetitive member adjustments (if any) of assemblies constructed from these elements should decrease.
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CitationVerrill, Steve; Kretschmann, David. 2008. Material variability and repetitive member allowable property adjustments in forest products engineering. Research Paper FPL-RP-649. Madison, WI: U.S. Department of Agriculture,Forest Service, Forest Products Laboratory. 36 p.
KeywordsAssembly, reliability, redundancy, allowable property
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