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Dependency (Cause and Effect) Models

The original, much maligned, dependency model.

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Functional Models

Functional modes are typically used for system models, highly abstracted or conceptual models.

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Failure Mode Models

Failure mode models are typically used for reliability block diagrams, lower levels of a design or legacy designs.

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Hybrid Models

Modern approaches to combining both functional and failure mode models into a single hybrid model.

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Comparison of Model Types

Comparison chart showing applicability of the different types of models.

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