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Six Towers, Eight Lights Each

SMRE SUMMER 2008 CLASS PROJECT Reliability of Football Field Lighting. Six Towers, Eight Lights Each. Objective: No more than two towers may have two lights out during an event. SMRE Summer 2008 Class Project .

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Six Towers, Eight Lights Each

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  1. SMRE SUMMER 2008 CLASS PROJECT Reliability of Football Field Lighting Six Towers, Eight Lights Each Objective: No more than two towers may have two lights out during an event

  2. SMRE Summer 2008 Class Project Light bulb durability sample data was taken for from Fig 2.9 of Wallace R. Blischke and D.N. Prabhakar Murthy article Reliability, Modeling, Prediction and Optimization. Distribution analysis indicated a Weibull distribution was suitable for analysis Sample Data 1258 990 1173 1151 1303 930 1337 1430 1204 709 827 1127 1277 1333 1002 1117 856 1039 1218 798 976 978 1233 935 1024 1170 1162 990 1101 933 909 1262 775 938 1022 1635 1195 666 1160 609 1009 996 Weibull Parameters: Shape 5.96345 (a) Scale 1147.23 (1/l) R(t) = e -(lt) a Comparison of Correlation coefficients; Weibull 0.991 Lognormal 0.984 Loglogistic 0.987 Smallest Extreme Value 0.969 Normal 0.991 Logistic 0.993

  3. Bulb System Tower SMRE Summer 2008 Class Project Reliability Function Probability Density Function System MTTF Bulb: 1064 MTTF Tower: 887 MTTF System: Maple Execution error Max at t=825.3

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