uIn general
reliability goes down as number of components
goes up (i.e. as complexity goes up).
uComponents in a
Series
lIn a
series if any single component fails the whole system fails - the four tires on
the car.
lRs =
R1 * R2 * ... * Rn
lExamples:
All components have reliability of 0.90.
ln
= 1 | Rs = =
.90
ln
= 2 | Rs = .9*.9 =
.81
ln
= 3 | Rs = .9*.9*.9
= .73
ln
= 10 | Rs = .910 = .35