Definition
A potential failure is a detectable physical condition indicating that a functional failure is in progress or about to occur (a specific vibration signature, a rising temperature trend, a measurable clearance change) identified before the function is actually lost. It is the earliest detectable point in the P-F curve, the basis for condition-based and predictive maintenance triggers.
Key facts
- A detectable, measurable condition, not the functional failure itself: it precedes the actual loss of function.
- Defines the "P" point on the P-F interval: the earliest point at which degradation becomes detectable by some method.
- Detection method matters: different techniques (vibration, thermography, oil analysis) detect the same potential failure at different points in its development.
- The basis for condition-based and predictive maintenance: work is triggered once a potential failure is confirmed, not at a calendar date.
What does Potential failure reveal about failures?
A potential failure identifies a specific, measurable early sign that degradation has begun (a particular vibration frequency, a temperature trend, an oil contaminant level) detectable through some inspection or monitoring method before the asset actually loses the function in question.
How do teams use Potential failure in failure analysis?
The P-F interval is the time span between when a potential failure first becomes detectable (P) and when the functional failure actually occurs (F). A potential failure is the earlier, detectable warning sign; functional failure is the later, actual loss of performance: the P-F interval is the window available to act between the two.
FAQ
Frequently asked questions
What detectable condition indicates an impending functional failure?
A potential failure: a measurable early sign (such as a vibration signature or temperature trend) that degradation is developing, detected before the asset actually loses the function, marking the start of the P-F interval.
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