摘要
腐蚀损伤是老龄飞机所面临的一个关键问题,尤其是点蚀坑,是引发裂纹萌生、扩展并导致飞机结构失效的一个重要原因。进行含点蚀损伤铝合金的疲劳寿命预测是充分发挥老龄飞机的潜力,使之继续安全、有效服役的关键。综述了近年来国内外进行含点蚀损伤铝合金疲劳寿命预测的研究现状和取得的主要研究成果,重点介绍了基于断裂力学方法的主要分析模型和所采用的关键技术,并对今后该领域的研究方向提出了几点建议。
Corrosion, especially pit corrosion, is a key problem facing aluminium aircraft structures. Prediction of the fatigue life of pre-corroded aluminum alloy is critical to the safety of aged aircrafts. In this paper, the fatigue life prediction techniques for pre-corroded aluminum alloy were discussed and summarized. And main analysis models for fatigue life prediction based on fracture mechanics and their critical techniques were introduced in detail.
出处
《失效分析与预防》
2012年第1期50-56,共7页
Failure Analysis and Prevention
关键词
预腐蚀
点蚀
疲劳寿命预测
断裂力学
pre-eorrosion
pit corrosion
fatigue life prediction
fracture mechanics
