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1 2009. 1. ( ) Design Reliability, Design Future!!! ii ..3 1..3 2..4 CFM(Competing Failure Mode) ..4 Mixed Weibull ..4 Mixed Weibull ..5 3..9 Design Reliability, Design Future!!! 1.. [ 1] . [ 1] [ 1] 100 100 .. Weibull++ , CFM(Competing Failure Mode) Mixed Weibull 3 Design Reliability, Design Future!!! . 2. CFM(Competing Failure Mode) , . CFM.

2 (Nonrepairable) CFM . , . CFM . , , . Mixed Weibull Mixed Weibull .. Mixed Weibull . , . Mixed Weibull . (pdf) (1) . iiit1iS1iiiiMWetNN)t(f = = (1) 4 Design Reliability, Design Future!!! 5 y S : y N : y Ni : i y i : i y i : i Mixed Weibull 20.

3 [ 1] . [ 1] ( : 1,000 ) 72 166 . [ 2] 100 . Design Reliability, Design Future!!! ReliaSoft W eibull++ 7 - - Weibull [1]= , [1]= , [1]= ; [2]= , [2]= , [2]= me, ( t)U nr el i abi l i ty , F ( t) eibullData 1W eibull-MixedNLRR SRM MED FMF=20/S=0D ata Poi ntsKO RTS [ 2] 2 . Weibull++ . 1) Weibull++7 [ 3] , (Weibull) Mixed . [ 3] 2) Data Calculate [ 4] 6 Design Reliability, Design Future!

4 !! . 2 Subpopulation Mixed-Weibull OK . [ 4] Mixed Weibull 3) . , 62% , , 38% , . 4) Data Plot [ 5] . [ 5] 7 Design Reliability, Design Future!!! (pdf) [ 5] Plot Type Pdf Plot . ReliaSoft W eibull++ 7 - Density Function [1]= , [1]= , [1]= ; [2]= , [2]= , [2]= me, ( t)f( t) 1 Weibull-MixedN LRR SRM MED FMF=20/S=0 Pdf Line [ 6] (pdf) pdf . 0 100 pdf . 100.

5 Plot Type Failure Rate vs Time [ 7] . 8 Design Reliability, Design Future!!! ReliaSoft W eibull++ 7 - Rate vs Time Plot [1]= , [1]= , [1]= ; [2]= , [2]= , [2]= me, ( t)Fai l ur e R ate, f( t) / R ( t) RateData 1 Weibull-MixedN LRR SRM MED FMF=20/S=0 Failure Rate Line [ 7] [ 7] 0 100 , 100 . 3. , (Multimodal) CFM Mixed Weibull . CFM(Competing Failure Mode) . , . Mixed Weibull . 9 Design Reliability, Design Future!

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