Reliability and Life Tests

Bain, L. J. Statistlcal Analysis of Reliability and Life-Testing Models Marcel Dekker New York, 1978. 

Barlow, R. E., and Proschan, F. (1975), Statistical Theory of Reliability and Life Testing, Holt, Rinehart Winston, New York. 

Kececioglu, D. (1993), Reliability and Life Testing Handbook, Prentice Hall, Englewood Cliffs, NJ. 

Barlow RE, Proschan F (1975) Statistical theory of reliability and life testing - probability models. Society for Industrial and Applied Mathematics, New York... 

Infant-mortality period. In the early period of failures, accelerated stress tests such as burn-in, power cycling, temperature cycling, and vibration as well as highly accelerated stress and life testing are used. These methods are used to screen out parts that are inherently not reliable and prevent the delivery of dead on arrival parts to a customer. While this consumes some early life of an assembly by stress screening, the remaining population begins the useful life period or the flat area of the bathtub. 

The GIDEP Reliability-maintainability Data Bank (RMDB) has failure rates, failure modes, replacement rates, mean time between failure (MTBF) and mean time to repair (MTTR) on components, equipment, subsystems and systems. The RMDB includes field experience data, laboratory accelerated life test data, reliability and maintainability demonstration test results. The... 

Shinha, S. K. and B. K. Kale Life Testing and Reliability Estimation. John Wiley Sons (Halsted), New York, 1980. 

Methods. To observe that corrosion testing in the laboratory frequently fails to predict what happens in real-world environments is to admit that the mechanisms controlling corrosion in such environments are not understood, even at this late date of study. Mechanism-based test methods for monitoring corrosion are needed that will provide reliable and rapid prediction of service life for corrosion-susceptible systems. It is expected that statistical analysis will play a... 

Maintenance/ reliability engineering The QRA team will need information about process configurations during maintenance activities and historic data on equipment performance. For example, how often are the instruments calibrated, does the same person calibrate redundant instruments, and how often do the pumps require repair QRA results are always more accurate if based on actual plant data, and maintenance/testing policies can make an order of magnitude difference in the calculations. Expect to commit about 1 staff-week per month over the life of the project. 

A distinction must be made between tests of short duration, in which the possible decomposition reactions are accelerated by a considerable rise in temperature, and the so-called service-life tests or surveillance tests, which take place over several months and may sometimes take more than a year. Short-duration tests alone do not suffice for a reliable estimate of the stability, at least where imperfectly known products are concerned. 

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