Functional failure

What are functional failures

Functional failures are non-fulfilment of wanted component functions.


There are three functional failure categories:

Qualification of new technology must analyse all categories. Performance of the OPERA during the conceptual design phase includes all categories at a coarse level. Performance of the FMECA during the detail design phase includes a detailed analysis of the failure modes and may not always include the other categories.

Functional failures are often found in the interface between modules designed by different suppliers due to inadequate interaction during design and testing. It is recommended always include interfacing components in simulations, functional structures (how it works), functional block diagrams, assembly drawings and test programs.

Updated: 07.01.2013

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