This paper introduces the reliability analysis and engineering application research of aircraft structure, tespectively applies Stress Severe Coefficient and DFR on the fatigue life astimation and reliability analyisis on the six Selected questions.

• 介绍了结构疲劳可靠性分析方法及工程应用研究情况，对选定的6个考题分别用应力严重系数法和DFR法进行了疲劳寿命估算和可靠性分析。