nullnullCalculation For 12-Week Rolling MTBF Using Weibull Analysis ToolnullCalculation For 12-Week Rolling MTBF Using Weibull Analysis ToolnullCalculation For 12-Week Rolling MTBF Using Weibull Analysis ToolPresent: Observed MTBF MethodIncorporating Credit-MTBF together with 12-Week Rolling MTBF Present: Observed MTBF MethodTIMEMTBF =1265KMTBF =1265K2 Failures DetectedMTBF=600KT0T12NOT TO SCALEProposed: Credit MTBF Method
Weibayes Method and Beta=0.55Incorporating Credit-MTBF together with 12-Week Rolling MTBF Credit MTBF Proposed: Credit MTBF Method
Weibayes Method and Beta=0.55TIMEMTBF =1265KMTBF =1265K2 Failures DetectedMTBF=600KT0T12NOT TO SCALEBasic Credit Rate Calculation
Weibayes Method and Beta=0.55Incorporating Credit-MTBF together with 12-Week Rolling MTBF TIMEMTBF =1,265KMTBF =1,265K2 Failures DetectedMTBF=600K = (1265-600)
= 665 KT0T12Credit Rate= 665 / 12
=55.4K / weekBasic Credit Rate Calculation
Weibayes Method and Beta=0.5512 Weeks WindowsNOT TO SCALEProposed New Plotting MethodIncorporating Credit-MTBF together with 12-Week Rolling MTBF Proposed New Plotting MethodUsing Weibayes method and assumed beta =0.55
For zero failure, MTBF=1,265K (12 Weeks Testing).
@ T0, 2 failures detected and the estimated MTBF dropped to 600K level.
MTBF increment (e.g. 55.4K) will be added weekly if no additional failure detected.
@ T12, the MTBF will reach 1,265K level if no additional failure detected.
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