20 physical reliability model 2 (2)

# 20 physical reliability model 2 (2) - Make-up Exam Nov...

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MFG5350 1 Make-up Exam Nov 17 (Monday) in the classtime

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MFG5350 2 Final Presentation Final Report Dec 12 (Friday) before 5PM
MFG5350 3 Final Exam Dec 8 (Monday) 7:00PM-9:45PM

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MFG5350 4 Dynamic Models Physical Reliability Models
MFG5350 5 Static models Dynamic models Time is not a factor in determining reliability any more. Only the physical strength and applied loads are involved. Following static models, the load over time is considered.

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MFG5350 6 Dynamic Models Assume: n loads (cycles) occur at time t 1 , t 2 ,…, t n ; each load has an identical and independent distribution f x (x) ; the strength of the system at each cycle has an identical and independent distribution f y (y) . A load is placed repetitively over time on a system. Let X i be the load and Y i be the strength observed on the i th cycle. After n cycles, the reliability is:
MFG5350 7 Dynamic Models - Examples 1. If the strength of a system is a constant k and the load can be

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20 physical reliability model 2 (2) - Make-up Exam Nov...

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