REPAIRABLE SYSTEM

1. REPAIRABLE

1.1. Probability that failure will not occur in time period of interest.

1.2. MTBF Ttime to first failure ROCOF/ Failure rate

1.3. Availability

1.4. Maintainability downtime

1.5. Product replacement within a warranty period

1.6. lifetime is aged T of system or total hours of operations

1.7. Failure rate is rate of occurrence of failure (ROCOF) - A property of a sequences of failure times

1.8. Restored to operating conditions without replacing entire system

2. EXAMPLE:

2.1. Computer

2.2. Automobile

2.3. Airplane

2.4. Software Program

3. NON-REPAIRABLE

3.1. survival probability over the time items expected life

3.2. MTTF time to first failure hazard rate

3.3. Reliability

3.4. Do not have maintainability downtime

3.5. Product replacement within warranty period

3.6. Lifetime is random variable T is describe by single time to failure

3.7. Failure rate is hazard rate of lifetime distribution

3.8. Discarded upon failure

4. EXAMPLE:

4.1. Light bulb

4.2. Battery