Methods schematization operating cycle changes system stress elementary cycle

Schematization complex operating cycles necessary for evaluating resource exhaustion of aircraft engine parts. In this paper, the analysis of existing methods and the proposed schematic his method. In the proposed method, the sequence of extrema «max - mim - max», with knowledge of the "global" minimum - (0 ) stands basically just loading cycle and additional cycle from the minimum to the lowest of the two maxima. An algorithm for isolating individual simple loading cycles in a complex life cycle, software realizovannny language Visual Basic for Applications environment Excel'97.