航空机载设备非金属密封件日历寿命评估技术研究  

Calendar Life Evaluation Technology of Non-metal Seals for Airborne Equipment

作　　者：王楠 胡涛 李霞 WANG Nan;HU Tao;LI Xia(Avic Xi'an Aircraft Industry Group Co.,Ltd.,Xi'an 710089,China)

机构地区：[1]中航西安飞机工业集团股份有限公司,西安710089

出　　处：《装备环境工程》2025年第4期75-81,共7页Equipment Environmental Engineering

摘　　要：针对机载成品日历寿命评估研究现状进行了分析,梳理了国内外现有寿命预测模型及相关修正参数,确定了非金属密封件的寿命预测模型,给出了相关参数的修正算法。通过加速试验获取日历敏感件的失效阈值,将失效阈值代入修正后的寿命预测模型,实现对敏感件和产品的日历寿命评估。在某液压油箱、放油开关日历寿命评估中,基于本文提出的寿命预测模型,最终评估日历寿命分别可达17.43、15.46 a。本文评估方法在工程实践中进行了应用,该方法基于真实服役数据回归构建了非金属密封件的性能退化模型,提高了评估结论可信度,可为开展机载成品日历寿命评估工作提供参考借鉴。The current research status of the life evaluation of calendar products for airborne equipment is analyzed,the existing life prediction models and related correction parameters in China and abroad are summarized,the life prediction model of non-metallic seals is determined and the correction algorithm for relevant parameters is provided.The failure threshold of calendar sensitive components is obtained through experiments,and the failure threshold is substituted into the modified life prediction model to achieve calendar life evaluation of sensitive components and products.In the calendar life evaluation of some certain hydraulic oil tank and oil drain switch,based on the life prediction model proposed here,the final estimated life can be 17.43 and 15.46 years,respectively.The evaluation method is applied in the engineering practice and the performance degradation model of non-metal seals is constructed based on real service data regression,improving the credibility of the evaluation conclusion and providing reference for carrying out the calendar life evaluation of airborne equipment.

关 键 词：航空机载设备 非金属密封件 日历寿命 预测模型 老化试验 评估方法 

分 类 号：V255.3[一般工业技术—材料科学与工程]