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The failure processes of a maintained system can be studied from the failure data using imperfect repair models. Additional information on the failure process can also be utilized in the form of covariates using proportional intensity models for getting more realistic results. Both these models can be combined to form imperfect repair proportional intensity models making use of the times to failure...
Most field systems today are maintained systems. Decisions about reliability of these systems are based on field or test failure data. For highly reliable and good quality systems the failures are few and far between. To understand their failure behaviour and reliability characteristics will take a long time. If the prototype systems are subjected to tests with higher levels of stresses leading to...
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