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针对目前民用飞机结构件疲劳损伤重复检查间隔主要凭经验确定的现状,引入延迟时间模型,以可靠性为约束、以费用为目标,建立了检查间隔计算模型。以民用飞机蒙皮组成单元-机体面板为例,通过疲劳损伤扩展模型得到输入数据,将计算结果与经验法结果进行对比,说明了模型的有效性。同时,研究了不同因子变化对最优维修间隔的影响。
Aiming at the present situation of repeated checking intervals of fatigue damage in civil aircraft structures, the delay time model is introduced, and the calculation model of checking interval is established with the cost as the goal. Taking the skin panel of civil aircraft as an example, the input data is obtained through fatigue damage expansion model. The calculated results are compared with the empirical results to show the effectiveness of the model. At the same time, the influence of different factors on the optimal maintenance interval was studied.