04 Exercise

Module 4 Estimation of Reliability Metrics

Lesson M04-04

Text: Section 6

Duration: 12 minutes

Exercise

This exercise in this lesson gives you an opportunity to analyze a dataset and estimate some specified reliability statistics.  You also are asked to perform a sensitivity analysis be using an alternate model and compare the results.

Excercise

8 units were tested until failure and the failure times

(in cycles) are: 5323, 2133, 16709, 7746, 8782, 14033, 2406, 2699 (Data is also found in Dataset_1.MTW)

1. Using a Weibull distribution:

a) Estimate the B10 and B0.5 life

b) Estimate R(3000)

c) Provide the 95% lower confidence bounds for the above estimates

2. Repeat the above estimates using a Loglogistic distribution

Here is the exercise file mentioned:

Dataset_1.MTW