摘要
针对当前飞机的腐蚀损伤评估模式,构建了一种较为合理的腐蚀管理全寿命分析模型。该模型可将全寿命阶段飞机结构可能遭受的各种腐蚀形态、MSD和结构材料性能随时间的退化作为变量纳入到一个框架中,提高了分析精度和可靠性,为新机定寿和老龄飞机延寿提供技术支持;方法具有一般性,可推广到其他装备结构寿命评定中。
Based on the characteristic of corrosion of aircraft structure under service conditions, a fatigue holistic assessment model that can incorporate the effects of various corrosion damage and age-degradation into a systematic damage tolerance framework was established with existing engineering principles. The influence of age-degradation and fatigue interaction on aircraft structure integrality was quantified through this model. In the meantime, the predictive model of residual strength and crack growth of the wide panel with multiple site damage（MSD） was established according to the holistic assessment method. Thus a reliable theory is provided for Corrosion damage tolerance assessment. A more effective engineering method for the maintenance, inspection, repair and extending use of aging structure systems can also be provided by this theory.
出处
《中国民航大学学报》
CAS
2008年第5期32-35,共4页
Journal of Civil Aviation University of China
基金
国家自然科学基金项目(50675221)
总装"十一五"预研课题(513270301)
关键词
飞机结构
腐蚀管理
全寿命
经济寿命
日历退化
aircraft structure
corrosion management
holistic life
economy life
degeneration
