v1rev 12019-05-27IEV 192-05-08:2015-02
instantaneous failure intensity
0112/2///61360_4#ADA198
limit, if it exists, of the quotient of the mean number of failures of a repairable item within time interval (t, t + Δt), by Δt, when Δt tends to zero z(t)=limΔt→0+E[N(t+Δt)−N(t)]Δt z(t)=limΔt→0+E[N(t+Δt)−N(t)]Δt where N(t) is the number of failures in the time interval (0, t), where E denotes the expectation.
- Used by classes
- 1
Also appears in1#
Entities with the same name in other dictionaries:
- Code
ADA198- Data type
- REAL_MEASURE_TYPEmeasure
- Unit
- UAA000 UAA000
Version history1#
IEC CDD records every published revision of each entity — version number, status, timestamp, and the change request that introduced it. OpenCDD captures the full chain of custody from cdd.iec.ch; the entry marked Current is the one rendered on this page.
All properties19#
- Version
- 1
- Revision
- 1
- Preferred name
- instantaneous failure intensity
- Definition
- limit, if it exists, of the quotient of the mean number of failures of a repairable item within time interval (t, t + Δt), by Δt, when Δt tends to zero z(t)=limΔt→0+E[N(t+Δt)−N(t)]Δt z(t)=limΔt→0+E[N(t+Δt)−N(t)]Δt where N(t) is the number of failures in the time interval (0, t), where E denotes the expectation.
- Definition source
- IEV 192-05-08:2015-02
- Note
- Other terms used for failure intensity are “rate of occurrence of failures”, and “failure frequency”.
- Definition class
- 0112/2///61360_4#ADA214measures for reliability related concepts
- Unit structure
- %
- Drawing reference
- NR2..3.3
- Initial value
- 0112/2///62720#UAA000 UAA000
- Published in
- NON_DEPENDENT_P_DET
- Status level
- Standard
- Version release date
- 2019-05-27
- Revision release date
- 2019-05-27
- Version initiation date
- 2019-05-27
- MDC_P022
- REAL_MEASURE_TYPE
- MDC_P040
- R51