A die forge press operates an average of 1000 hr/yr. Under a minimal repair concept, machine failures generated a nonhomogenous Poisson process having the following intensity function with t measured in operating hours: p (t) = 0.0000391t 07. When the machine has failed, the repair time is lognormal with tod=7.0 hours and as hape parameter of 0.8. a) Write the expression for and calculate the MTBF, mean time between failures, for the mission time of 5 yr = 5,000 hr. b) Using this information over the 5 yr mission time, write the expression for and calculate the average inherent, steady state, Availability, As of the mission time of 5 yr operating life of the press.
A die forge press operates an average of 1000 hr/yr. Under a minimal repair concept, machine failures generated a nonhomogenous Poisson process having the following intensity function with t measured in operating hours: p (t) = 0.0000391t 07. When the machine has failed, the repair time is lognormal with tod=7.0 hours and as hape parameter of 0.8. a) Write the expression for and calculate the MTBF, mean time between failures, for the mission time of 5 yr = 5,000 hr. b) Using this information over the 5 yr mission time, write the expression for and calculate the average inherent, steady state, Availability, As of the mission time of 5 yr operating life of the press.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Transcribed Image Text:6. A die forge press operates an average of 1000 hr/yr. Under a minimal repair concept, machine
failures generated a nonhomogenous Poisson process having the following intensity function
with t measured in operating hours: p (t) = 0.0000391t 07. When the machine has
failed, the repair time is lognormal with tmed -7.0 hours and as hape parameter of 0.8.
a) Write the expression for and calculate the MTBF, mean time between failures, for the
mission time of 5 yr = 5,000 hr.
b) Using this information over the 5 yr mission time, write the expression for and calculate the
average inherent, steady state, Availability, Ainh of the mission time of 5 yr operating life of
the press.
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