Tuesday 22 January 2013

Reliability | Reliability Analysis | Methods | Failure Rate | Mean Time Between Failures | MTBF | Failure Mode Effective Analysis | FMEA

It is defined as the probability that a given system will perform it’s function adequately for it’s specified period of lifetime under specified operating conditions.


Common measures are :

1. Failure rate.

2. Mean time between failures(MTBF)

3. Survival percentage.

Failure Rate:


Rate which components of population fail.

R(t)=Ns(t)/Nf(t)

Where,

Ns(t)- No. of components that survived during time ’t’

Nf(t) – No. of failures that occurred during the same time.




Mean time between Failures(MTBF):


1 comment:

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