| Citation: | SHI Haiyan, WEI Chun, WEN Yanqing, et al. Reliability analysis for systems subject to competing failure processes based on uncertainty theory[J]. Journal of Beijing University of Aeronautics and Astronautics, 2021, 47(1): 84-89. doi: 10.13700/j.bh.1001-5965.2019.0656(in Chinese)
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For complex systems with newly developed products and less failure data, a competitive failure model in which natural degradation and external shocks are independent of each other in an uncertain environment is proposed. Considering that the system suffers from natural degradation and external shocks at the same time, the continuous natural degradation is described by an uncertain process, and the time interval of the shock arrival and the damage to the system caused by each shock are described by two different uncertain variables. Using the uncertainty theory, the system belief reliability is studied under the extreme shock model, cumulative shock model, and
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