TTT-based tests of rend in repairable systems data

摘要

A major aspect of analysis of failure data for repairable systems is the testing for a possible trend in interfailure ties. This paper reviews some important and popular graphical methods and tests for the nonhomogeneous Poisson process model. In particular, the total time on test (TTT) plot is considered, and trend tests based on the TTT-statistic are motivated and derived. In particular, a test based on the Anderson- Darling statistic is suggested. The tests are evaluated and compared in a simulation Study, both with respect to the achievement of correct significance level and rejection Power.