G.S. Sаdykhov1, V.P. Savchenko2, S.S. Kudryavtseva3

1,3 Bauman Moscow State Technical University (National Research University) (Moscow, Russia)
2 JSC “Radio Engineering Institute n.a. Academician A.L. Mints” (Moscow, Russia)

1 gsadykhov@gmail.com, 2 vsavchenko@rti-mints.ru, 3 kudryavctva@bmstu.ru

To estimate the operating life value of non-restorable items within a time interval longer than the duration of the pre-production period, but less than the time of the beginning of the aging process, the use of the indicators "gamma-percentile operating life " and "mean operating life" is incorrect. The task is to determine a new operating life measure.

Goal. Derive a formula for calculating the operating life measure for non-restorable items. To investigate the properties of the entered measure. Prove calculation formulas, estimates and limit values for the entered measure.

The measure of the operating life of non-restorable items has been determined. The properties of the introduced measure are investigated. The presented formula for calculating the measure is correct for any law of operating life allocation. Formulas for interpolation and extrapolation estimates of the measure, limit values of the mean residual operating life for various laws of operating life allocation of the item, the marginal reserve factor, as well as statistical (point) estimates of the introduced measure are presented and proved.

Examples of calculating the mean residual operating life of the item, the limit value of the mean residual operating life of the reliability function of the item given by a mixture of exponential distributions, statistical (point) estimation of the mean residual operating life for similar items are given.

Sаdykhov G.S., Savchenko V.P., Kudryavtseva S.S. Measure of the residual operating life of items: calculation, estimation and limit values. Science Intensive Technologies. 2024. V. 25. № 3. P. 59−70. DOI: https://doi.org/10.18127/ j19998465-202403-05 (in Russian)

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