Title of article
ModellingconsequencesfromfailureandmaterialpropertiesbydistributionmixturesOriginalResearchArticle
Author/Authors
M.T.Todinov، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2003
Pages
12
From page
233
To page
244
Abstract
Themainresultofthispaperisthefindingthatthemaximumvarianceofanydistributionmixtureisattainedfromsamplingoneoratmosttwoindividualdistributionscomposingthemixture.Anupperboundforthevarianceofthepropertiesfromsamplinginhomogeneousmicrostructureisderivedwhichdoesnotdependontheprobabilitieswithwhichtheindividualmicrostructuralzonesaresampled.
Apowerfulanalogyexistsbetweenthedistributionofthemechanicalpropertiesfromsamplinginhomogeneousmicrostructureandthedistributionofconsequencesgivenfailure.Theconsequencesfromfailurearemodelledbyadistributionmixturecomposedoftheindividualdistributionsoftheconsequencesfromfailurecharacterisingmutuallyexclusivefailuremodes.Similarly,anefficientalgorithmisdevelopedwhichdeterminestheupperboundofthevarianceoftheconsequencesfromfailureirrespectiveoftheprobabilitiesoftriggeringtheseparatefailuremodes.Theconcept‘potentiallossesfromfailure’isintroduced.Itisdemonstratedthatthepotentiallossesfromfailureisadistributionmixtureanditsexpectedvalueequalstheriskoffailure.Anexpressionforthevarianceofthepotentiallossesfromfailureisalsoderived.
Usingthemodeloftheconsequencesfromfailureasadistributionmixture,amethodisdevelopedforsettingreliabilityrequirementsbasedonminimumfailure-freeoperatingperiods(MFFOP).TheMFFOPreliabilityrequirementslimittheriskofprematurefailurebelowamaximumacceptablelevel.
Journal title
Nuclear Engineering and Design Eslah
Serial Year
2003
Journal title
Nuclear Engineering and Design Eslah
Record number
894584
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