CRYSTAL: A Method and Software Package to Project Steady State Conditions of a Product Using Transient Monotonic or Cyclic Data

A novel analytical procedure for projecting the steady state conditions of transient data is presented. In addition to the basic application of the method to monotonically changing data, this method has been extended to the case of cyclic data, for which only a coarse cyclic pattern is required to project cyclicly repeatable maximum and minimum expected values.

The procedure which has been implemented, using the commercial software LOTUS 1-2-3 Version 3.1 on an IBM PC, is easily transportable and can conveniently be used at a test site. Results from application to satellite solar beam test temperature data are presented to demonstrate the accuracy of the method and the attendant potential for test time savings.