国外航空疲劳研究现状及展望

航空疲劳问题是影响在研/在役飞机性能的关键因素之一。以航空疲劳事故为线索，本文论述了航空结构强度设计理念的变革历程以及相应各时期的航空疲劳发展现状，并围绕21世纪以来国际航空疲劳界的关注热点，从结构长寿命设计、疲劳分析方法及工具、全尺寸结构疲劳试验技术、结构健康监测技术、老龄飞机延寿技术等五个方面阐述了航空疲劳工程领域的重大研究进展及方向。考虑目前航空疲劳工程中的问题及未来航空器的发展方向，从航空疲劳评定基础问题、长寿命设计应用问题、试验评估及数字化新技术等方面指出航空疲劳研究所面临的挑战，以满足现代飞机长寿命、轻质和高可靠性设计要求，为航空疲劳未来发展提供技术参考。

Current status and prospect of overseas research on aeronautical fatigue

Fatigue is one of the key factors affecting the performance of aircraft in research or service. In this article, firstly, the aeronautical accidents caused by fatigue were quoted as clues to state the evolution of structural strength design concept and research situation at each specific period. Meanwhile, international aeronautical fatigue research and their significant development as well as the future developing directions in areas since 21 century has been reviewed and evaluated in the aspects of structural long-life design, fatigue analysis approaches and tools, full-scale structural fatigue testing technology, structural health monitoring and life extension of aging aircraft. Conclusively, considering the current problems and potential development directions, the challenges resisting the realization of high requirement on the long life, lightweight and high reliability of future aircraft design were pointed out on four topics:aeronautical fatigue on evaluation basic research, design and application research, testing evaluation and digital technology, which provides technical materials for the development of aeronautical fatigue.