Reliability Block Diagram (RBD)

A Reliability Block Diagram (RBD) is a visual tool used to represent the arrangement and connection of components within a system, showing how their reliability contributes to overall system performance. Each block depicts a component or subsystem, and their connections illustrate whether they are arranged in series, parallel, or a combination, affecting how failures impact the entire system. It helps engineers analyze the likelihood of system success or failure, identify critical components, and improve design reliability by understanding how different parts work together to ensure the system operates effectively over time.