Fehlerbaum (Fault Tree Analysis) in Go

A fault tree analysis tool written in Go that computes Minimal Cut Sets (MCS), failure probabilities, and reliability values — and exports the tree as a Graphviz visualization.

Structs

EVENT

A basic event (leaf node) with a known failure probability and reliability.

Field	Type	Description
Title	string	Name of the event
Reliability	float64	Probability of working: R
Failure	float64	Probability of failing: F = 1 - R

AND_NODE

Gate that fails only when all children fail.

• Failure: $F = \prod_{i=0}^{n} F_i$
• Reliability: $R = 1 - \prod_{i=0}^{n} (1-R_i)$

OR_NODE

Gate that fails when any child fails.

• Failure: $F = 1 - \prod_{i=0}^{n} (1-F_i)$
• Reliability: $R = \prod_{i=0}^{n} R_i$

NODE Interface

All node types implement:

• getCutSets() [][]EVENT — returns all Minimal Cut Sets
• getReliability() float64
• getFailure() float64
• toDot() string — Graphviz DOT representation

Generate PNG

go run Fehlerbaum.go
dot -Tpng Fehlerbaum.dot -o Fehlerbaum.png