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航空器中总存在有不可检测结构，这些结构在使用中，无法进行检测，一般也不进行维修．本文给出了这种不可检结构的可靠性分析模型，该模型充分考虑了裂纹扩展等各种随机因素的分散性
There are always undetectable structures in aircraft, which can not be tested in use and are not normally serviced. In this paper, the reliability analysis model of this untestable structure is given. The model fully considers the dispersibility of various random factors such as crack propagation