Data Types and Models for Repairable Systems Analysis

There is a choice of two data sheets for analyzing data from repairable systems. In general:

Use the Repairable data type for analyzing the individual failure times for multiple repairable systems operating in the field. The analysis models the number of individual system failures vs. system time.
Use the Fleet data type for analyzing the failure times for multiple repairable systems from a fleet (rather than individual system) perspective. The analysis groups the data and models the number of fleet failures vs. fleet time.

If you wish to perform repairable systems analysis based on the assumption of minimal repair (i.e., the system is "as bad as old" after each repair), use the Power Law model in a Repairable data sheet. If the power law model does not provide a good fit, you can transfer the data to a Fleet data sheet and use the Crow-AMSAA (NHPP) instead.

For information about using the Crow Extended model for fielded systems, see Crow Extended.

E-mail Link