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Because of the complexity of engineering systems, and the fact that insufficient data are only available to obtain the precise state probability of components, an extended universal generating function (UGF) based on belief function theory is introduced in this paper to conduct the reliability analysis of multi-state systems (MSSs) with epistemic uncertainty. The behavior of common cause failures...
According to the aero-engines' flight hours and the speed cycle number, we can obtain the relationship between the load spectrum and the life of its main components; According to the analysis of actual measured load spectrum and the fatigue damage model, this paper adopts the S-N curve and Miner's rule to estimate the fatigue life of engine's first stage turbine disk.
Based on the Reaction-Diffusion framework, an improved NBTI model is proposed with the consideration of moving diffusion front in oxide and poly-Si layer. The dependence of degradation on channel length and width is taken into account simultaneously for the first time. The model is implemented with Verilog-A to be compatible with commercial simulators and verified by experimental data.
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