Reliability

The ability for an item to perform a required function under given conditions for a given time interval.

Reliability is usually expressed quantitatively through appropriate characteristics. In some applications, one of these characteristics is an expression of this capability through a probability, also called reliability.

Failure mechanism

Set of "cause-effect" relationships in a physical, chemical, or other process linking, the cause at the root of the failure to the failure mode.

Failure mode

One of the possible states of an entity one of whose required functions fails.

Failure cause

The circumstances during design, manufacture or use which have led to a failure.

Factor contributing to reliability – Factor affecting reliability

Technological, environment, manufacturing process or other parameter affecting the reliability of a component or system.

Acronyms