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| == Phase with F/S links ==
| | #REDIRECT [[Example_Using_Success_Failure_Paths_in_Phase_Diagrams]] |
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| ==== Purposes ====
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| The purposes of this example is to illustrate how to apply F/S links in Phase simulation.
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| ==== RBDs for Phase and settings ====
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| The RBDs for Phase 1 and Phase 2 are as followings:
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| [[Image:RBD_for_Phase_1_and_2.png|thumb|center|500px]]
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| In Phase 1, Block A follows Weibull distribution with Beta = 1.5 and Eta = 1000 hours. Block B follows Weibull distribution with Beta = 1.5 and Eta = 1200 hours. No maintenance.
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| In Phase 2, Block A follows Weibull distribution with Beta = 1.5 and Eta = 900 hours. Block B follows Weibull distribution with Beta = 1.5 and Eta = 1150 hours. No maintenance.
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| ==== Example 1 ====
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| The Phase diagram is as followings: [[Image:Phase Example 1.png|thumb|center|500px]]
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| Maintenance phase has a CM with duration 80 hours and PM with duration 20 hours for both Block A and B.
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| Phase 1 has duration 500 hours and Phase 2 has duration 100 hours.
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| If there is no failure in Phase 1, upon finish, it goes to Phase 2. If there is a failure in Phase 1, it would go to Maintenance Phase 3 directly. If there is not failure in Phase 2, upon finish, it goes back to Phase 1. If there is a failure in Phase 2, it would to go Maintenance Phase 3.
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| The Block Up/Down plot is as followings:
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| #At the first cycle (0-500 for Phase 1 and 500-600 for Phase 2), there is no failure, thus after Phase 2, Phase 1 is executed (back to Phase 1 after this cycle). | |
| #At 1135 (Phase 2 at second cycle), Block A fails. System doesn't enter Maintenance Phase 3 immediatly because in Phase 2, Block A and Block B are parallel. Only failure of Block A doesn't bring system down.
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| #At 1200, system finishes Phase 2 and goes back to Phase 1. There is not system failure in Phase 2 (only failure is Block A). In Phase 1, Block A and Block B are in series. Failure of Block A passed from Phase 2 will bring system down in Phase 1. Thus there is a system failure in Phase 1 and system goes to Maintenance Phase 3 immediatly. Block B is not down, thus it gets PM with duration 20 hours. Block A gets CM with duration 100 hours.
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| #At 2738, Block A fails in Phase 1 and bring system down immediatly. System goes into Maintenance Phase 3 immediatly. Block A gets CM and Block B gets PM.
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| [[Image:Phase Up Down plot for Example 1.png|thumb|center|500px]]
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| ==== Example 2 ====
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| The Phase diagram is as followings: [[Image:Phase Example 2.png|thumb|center|500px]]
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| Everything is the same as that in Example 1 except that the link from Phase 2 to Maintenance Phase 3 changes from F link to S link. This means that even there is no failure in Phase 2, the system still go to Maintenance Phase 3 after Phase 2. If there is a failure in Phase 2, system of course would go to Maintennace Phase 3 as default.
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| The Block Up/Down plot is as followings:
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| #At the first cycle (0-500 for Phase 1 and 500-600 for Phase 2), there is no failure, thus after Phase 2, the system go to Maintennace Phase 3 for PM for both Block A and B with duration 20 hours.
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| #At 1171, Block A fails in Phase 2. Due to the parallel structure, this failure doesn't bring system down
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