Weibull Prediction of Future Failures
This tool is based on work described in references 1 and 2. For a population of N items placed on test, this tool calculates the expected number of failures for some future time interval based on the following two inputs:Inputs 1 - 5 below are pre-filled with example data from references 1 and 2 for 20,000 items and the discovery of 8 failures at the 3 year inspection point.
Additional expected failures during years 3 through 10 are predicted based on Weibull shape parameters in the range of 3.0 to 3.6. Note, ensure consistency of time units for inputs 3 and 5.
1. the estimated Weibull shape parameter and
2. some number of failures (X>=1) during the initial time interval (t1).