Estimation of system reliability — two parts in series
Reliability of two parts, each with its own normal life distribution (mean, standard deviation), connected in series, at a common service life.
z-value, part 11.639
z-value, part 21.961
Reliability, R(t), part 10.949
Reliability, R(t), part 20.975
System reliability (series)0.926
Method & references
- Two-part series-system reliability, from each part's normal life distribution, by numerical integration.
The computation is a literal port of the original client-side JavaScript from /calculators/p1_7.htm. Results are verified equal to the original by an automated golden-master test. No formula has been re-derived or “improved”.