This tool is intended to assist in developing an idealized reliability growth curve using methods described in MIL-HDBK-189. The input table below is pre-filled with an example test data set,
"example of case 2," found on page 46 of from MIL-HDBK-189 (Ref. 1).
For a given initial test period (phase 1) and associated average MTBF and growth rate, the tool calculates an idealized reliability growth curve that can be expected from subsequent test phases.
By selecting plot option two below, the tool calculates the test time required to achieve an MTBF goal based on the phase 1 parameters entered in the first line of the table. For example, the pre-populated test data set results in an achieved MTBF of 110 hours after 10,000 hours of testing. Entering only the phase 1 information from the test data set and selecting plot option 2 with an MTBF goal of 110 hours, results in 10,000 hours of test time required (subject to rounding errors), as expected.