The detail fatigue rating (DFR) method, based on probability fatigue, is one of fatigue reliability life design and prediction methods for civil aircraft structure, and has been widespreadly developed both home and abroad.

• 细节疲劳额定值法(DFR法)是基于概率疲劳的民机结构疲劳可靠性寿命分析方法之一，该方法在国内外都有了较大的发展。