BlockSim Analytical Fault Tree and RBD Plot Examples

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Let's assume that the three components A, B and C follow failure distributions Weibull(Beta=1.5,Eta=1000), Weibull(Beta=1.1, Eta=800) and Exponential(MTTF=3000). The reliability for each components and the system at mission time =100 hours is shown in the figure below.

There are several plots available for analytic RBD and FT analysis. In system level, there are four plots available as show in the following:

Unreliability vs. Time


Reliability vs. Time


Probability Density Function


Failure Rate vs. Time


For the metrics, there are three kind of reliability importance plot available:

Reliability Importance vs. Time


Static Reliability Importance


Static Reliability Importance(Tableau)


In block level, there are four kind of plots available:

Block Unreliability vs. Time


Block Reliability vs. Time


Block Probability Density Function


Block Failure Rate