Title of article :
A sparepartsmodelwithcold-standbyredundancyonsystemlevel
Author/Authors :
Karin S.deSmidt-Destombes ، نويسنده , , NicoleP.vanElst، نويسنده , , AnaIsabelBarros، نويسنده , , HarmMulder c، نويسنده , , Jan A. M. Hontelez، نويسنده ,
Issue Information :
ماهنامه با شماره پیاپی سال 2011
Abstract :
This paperpresentsavariantofasparepartsinventorymodelwithcoldstand-byredundancyonsystem
level.Redundancyonsystemlevelimpliesthatnotallsystemsneedtobeoperationalinordertohavethe
wholesystemoperational.Thecoldstand-byfeatureimpliesthatonlytheminimumrequiredsystemsare
operational.Inordertodetermineacosteffectivesparepartspackagesuchthatinacoldstand-by
redundancysituationasufficientnumberofsystemsisoperationalforaspecifiedperiodweextendthe
METRIC methodology.Tocomputetheprobabilitythatthenumberofoperatingsystemsduringthe
operationalperiodissufficient,wepresentbothanexact,buttime-consumingmethod,andafast
approximationmethodbasedonfittingdistributionsonthefirsttwomoments.Thisapproximation
methodshowsverysmalldifferenceswhencomparedtotheexactmethod.Finally,wecompareboth
methodstoasimulationmodelinordertotestthevalidityandimpactofourmodelling.
Keywords :
Metric , Logistics , Spare parts , Inventory , System redundancy
Journal title :
Computers and Operations Research
Journal title :
Computers and Operations Research
