Throughout the life of the product with low overall life cycle costs the techniques that comprise design for reliability include 1 failure modes and effects analysis 2 robust parameter design 3 block diagrams and fault tree analyses 4 physics of failure methods 5 simulation methods and 6 root cause analysis. A properly applied design fmea dfmea takes requirements customer usage and environment information as inputs and through its findings initiates and or informs many reliability centered activities such as physics of failure system analysis reliability prediction life testing and accelerated life testing. Failure mode and effects analysis fmea often written with failure modes in plural is the process of reviewing as many components assemblies and subsystems as possible to identify potential failure modes in a system and their causes and effectsfor each component the failure modes and their resulting effects on the rest of the system are recorded in a specific fmea worksheet. Reliability maintainability rm engineering overview the purpose of reliability and maintainability rm engineering maintainability includes built in test bit is to influence system design in order to increase mission capability and availability and decrease logistics burden and cost over a systems life cycle
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