Identification of Parametric and Momentary Damages on the Basis of Lindeberg-Levy's Model

摘要

Article presents the innovative method for the assessment of reliability condition of the exploited system, based on the appropriate analysis of changes in the current parameters of technical condition a_(Rb), and the regulation condition a_(RC), determined from the compressed condition equations (1 and 2). While analyzing the course of momentary parameters for technical condition a_(Rb) and the regulation condition o_(rc), it was observed that the parametric and momentary damages can be identified on the basis of quantitative relations between momentary threshold value d_(pr) and corresponding momentary permissible value d_(pr dop), which are calculated from equations (7, 8, 9) resulting from Lindeberg- Levy's theorem. It is assumed that the damages are prevailing, when for the moment 6,: d_(prl)>d_(pr d0pl). With the number of damages (damage map), reliability parameters for each moment of exploitation of technical object (before the catastrophic damages will occur) can be determined. Parametric damages (expected lifetime E(T) and standard deviation of expected lifetime oe(T) provides the reasonable information for the appropriate planning of the servicing of exploitative objects.