METHOD OF DETERMINING RESIDUAL LIFE OF MACHINE PARTS Russian patent published in 2020 - IPC G01M13/00 G01M15/00 

FIELD: machine building.

SUBSTANCE: invention relates to machine building, particularly, to maintenance and repair of vehicles in process of their operation, namely, to method of determining residual life of machine parts during diagnostics, during machine maintenance. Residual lifetime is estimated taking into account variation of average service life, root-mean-square value, stationarity of the process of obtaining diagnostic data and is determined as difference between predicted average service life and current time of monitoring - current operating time. At that, predicted average service life is determined by interval estimation for random value by repeated measurements of parameter, which characterizes resource of part, with construction of dependence of change of this parameter to its limit value, then performing the same measurements with respect to the second and subsequent parameters characterizing the part resource, statistical processing of the obtained data with their combination into one array and determining average statistical indices of mean resource, root-mean-square deviation, and residual life is determined by formula based on said parameters.

EFFECT: technical result consists in improvement of accuracy and reliability of prediction in evaluation of residual life of machine part.

1 cl, 3 dwg