ABSTRACT
Recall from Chapter 1 that arbitrarily censored failure times may consist of
• Right-censored failure time (the unit has not failed by that time, but we know that it will fail at anytime later)
• Left-censored failure time (the unit failed by that time, but we do not know exactly when)
• Exact failure time (the unit failed exactly at that time) • Interval-censored failure time (the unit failed within a time interval,
but we do not know exactly when)
In this case study, a reliability engineer at a supplier of diesel engine parts wishes to perform reliability analysis on crankshafts. Specifically, she is interested in knowing the answers to the following questions:
• By what time will 60% of the crankshafts fail? • By what time will 99% of the crankshafts fail? • What percentage of crankshafts will survive past 45,000 engine
cycles?
