CESSNA172型飞机副翼拉杆关节轴承失效分析  

作　　者：李锐 代鑫 甄轲 

机构地区：[1]中国民用航空飞行学院遂宁分院,四川遂宁629000

出　　处：《科技创新与应用》2024年第31期63-66,共4页Technology Innovation and Application

基　　金：中国民用航空飞行学院青年基金项目(QJ2022-201)。

摘　　要：CESSNA172型飞机副翼拉杆关节轴承作为控制副翼偏转的重要的传动部件,时常在服役过程中存在磨损失效的现象,从而直接影响飞行过程中副翼的操控性能。该文采用体视显微镜、场发射扫描电子显微镜(FESEM)、X射线能谱仪(EDS)等摩擦学测试方法,选取服役过程中失效的CESSNA172型飞机副翼拉杆关节轴承进行失效分析,探究其失效原因与失效模式。结果表明,轴承外圈上复合织物材料的磨损损伤是关节轴承失效的根本原因;轴承内圈和复合织物层的摩擦行为表现为聚四氟乙烯(PTFE)转移膜的持续生成、剥落、挤出与再生;此外,受服役载荷作用,外圈复合织物层在不同圆周位置表现出不同程度的磨损损伤;轴承的磨损机理为疲劳磨损、黏着磨损以及一定的磨粒磨损和氧化磨损。As an important transmission component to control aileron deflection,the aileron rod joint bearings of the CESSNA172 aircraft often suffer from wear failure during service,which directly affects the control performance of the aileron during flight.In this paper,tribological testing methods such as stereo microscope,field emission scanning electron microscope(FESEM),and X-ray Energy Dispersive Spectrometer(EDS)were used to select CESSNA172 aircraft aileron rod joint bearings that failed during service for failure analysis,and explore their failure causes and failure modes.The results showed that:The wear damage of the composite fabric material on the bearing outer ring is the root cause of the failure of the joint bearing;the friction behavior of the bearing inner ring and the composite fabric layer is manifested by the continuous formation,peeling,extrusion and regeneration of a polytetrafluoroethylene(PTFE)transfer film;in addition,under the action of service load,the composite fabric layer of the outer ring shows varying degrees of wear damage at different circumferential positions;the wear mechanism of the bearing is fatigue wear,adhesive wear,and certain abrasive wear and oxidation wear.

关 键 词：副翼 关节轴承 摩擦行为 失效模式 磨损损伤 

分 类 号：V267[航空宇航科学与技术—航空宇航制造工程]