Failure-mode is the human-made concept describing a specific, identifiable way in which a system, component, or process can fail to perform its intended function. It distinguishes the mechanism of failure (how it breaks) from the cause of failure (why it breaks), enabling systematic analysis of reliability and robustness. The parameters of failure-mode are: (1) a described failure mechanism, (2) the symptoms or effects produced by that mechanism, (3) the conditions under which the mechanism is activated. Failure-mode persists through failure-mode and effects analysis (FMEA) documentation, engineering standards, safety regulations, and the shared analytical vocabulary of reliability engineering and systems design. [formal: modus_defectus | substrate: mind | horizon: a life | explicit: yes | epoch: 0.02]
Accepted ontology entry
failure-mode
Failure-mode is the human-made concept describing a specific, identifiable way in which a system, component, or process can fail to perform its intended function. It distinguishes the mechanism of failure (how it breaks) from the cause of…
Definition
Why it is in scope
A human-made analytical concept in reliability engineering and systems analysis that categorizes the specific mechanisms by which a system, component, or process can cease to perform its intended function. Built to persist through FMEA documentation, safety analysis practices, and engineering discipline.
Names and aliases
- failure-modeen · CANONICAL
Relations from this entry
No accepted relations in this direction.
Relations to this entry
- cms83ire500qfh6s8aeqyay3j← DEPENDS_ON
Fault tree analysis depends on failure-mode: remove failure-modes from the picture and fault-tree has no content to analyze — it cannot operate without identifying how things can fail first. The removal test is clear: X (fault-tree) stops operating when Y (failure-mode) is removed. Direction: fault-tree → failure-mode (specific method needs its building blocks).
- cms83xe5u00s0h6s88lc8rrb4← DEPENDS_ON
A risk-register depends on failure-mode: remove failure-modes and the risk-register loses its primary subject matter — it cannot function as a ledger of risks without the concept of how things can fail. Per the removal test (Law 8), X (risk-register) stops operating when Y (failure-mode) is removed.
- cmsivlvjw019vnobppdslp0pi← INSTANCE_OF
A single-point-of-failure is a specific kind of failure mode: the mode where one component's failure causes system-wide failure. Per Law 9, X is a specific kind of Y maps to INSTANCE_OF. A competent speaker would call a single-point-of-failure a failure mode.
- cmsixcd4601g4nobpm595aipd← INSTANCE_OF
Common-cause-failure is a specific kind of failure mode: the mode where a single root cause triggers cascading failures across multiple components or redundant systems. A competent speaker would call it 'a failure mode' — specifically, one where redundancy is defeated by shared causation. Per Law 9, specific→general maps to INSTANCE_OF.
- cmsbb9y7h00ou3vv3nrv0kuls← INSTANCE_OF
A safety bottleneck is a specific kind of failure mode: when the safety system itself becomes a limitation that prevents the overall system from operating as designed. Per Law 9, a competent speaker would call it 'a failure mode' — the mode where safety constraints fail to enable operation.
- cmsiuuvf50182nobpm5znx4ae← INSTANCE_OF
blast-radius is a specific kind of failure-mode: it describes the specific pattern of damage scope that results when a single component fails. A competent speaker would call it 'a failure mode' — one that limits damage to a bounded region.
- cmsndqjk803n71q13cwal1k13← INSTANCE_OF
Test: INSTANCE_OF (specific→general, Law 9). A hallucination is a specific kind of failure mode — one where a generative model produces outputs that are confident but ungrounded. A competent ML practitioner would call a hallucination 'a failure mode' of a model. The nearest kind is failure-mode, not a more abstract category.
- buffer-underrun← INSTANCE_OF
Buffer-underrun is a specific kind of failure-mode in digital audio playback systems, characterized by buffer exhaustion leading to audible dropout.
- audio-dropout← INSTANCE_OF
Audio-dropout is a specific kind of failure-mode in digital audio playback, characterized by audible gaps or silence due to data loss or processing interruption. A competent engineer would call an audio dropout a failure mode of the audio system.
Record identity
- Created
- Jul 30, 2026, 7:57 PM UTC
- Content hash
- ecda8cb2e262a96ec92bf131f873454c51749846e0f80c9b6f7f8e0f05a12c9f