航空关键动部件的开裂分析及检测应用  

Cracking Analysis and Inspection Application of Aviation Key Moving Part

作　　者：刘甜甜 徐桂荣 迟天佐 邓浩 LIU Tian-tian;XU Gui-rong;CHI Tian-zuo;DENG Hao(AVIC Hafei Aviation Industry Co.,Ltd.,Harbin150066,China)

机构地区：[1]航空工业哈尔滨飞机工业集团有限责任公司,哈尔滨150066

出　　处：《航空发动机》2023年第4期162-167,共6页Aeroengine

基　　金：航空动力基础研究项目资助。

摘　　要：针对航空关键动部件生产制造及验收试验中出现的提前失效问题,采用多种疲劳失效分析方法和工具,进行了疲劳试验出现失效的原因分析,从宏观和微观分析、金相分析、能谱分析及疲劳试验过程中的应力分析等方面对产生的缺陷进行了系统研究。了解了其疲劳开裂的原因,并对缺陷性质及零件制造工艺过程进行分析。结果表明:应力集中区是最容易出现开裂的位置,也是检测的关键部位,要进一步加强在制件及在役件的表面缺陷的检测,细化其检测实施方式及关键控制点,是保证动部件试验质量的关键。通过加强受力部位的无损检测,为及早发现和及时处理潜在的缺陷提供重要依据,从而降低关键动部件的试验失败的风险,提高产品试验质量及使用寿命,有助于其它机型更好地改进检测的设计要求及应用,为其提供了重要的依据和研究方向。In response to the occurrence of premature failure in the manufacture and acceptance test of a key aviation moving part,the causes of the failure in the fatigue test of the part were analyzed by using a variety of fatigue failure analysis methods and tools,and the defects were systematically studied from macro and micro analysis,metallographic analysis,energy spectrum analysis and stress analysis during the fatigue test.The research revealed causes of the fatigue cracking,and analyzed the nature of the defect and the manufacturing process of the part.The results show that the stress concentration area is the most prone to cracking and the key part of detection through the analysis of defect properties and parts manufacturing process.To ensure the test quality of moving parts,it is crucial to further strengthen the detection of surface defects in both new parts and in-service parts,and refine the detection methods and critical control points.By strengthening the non-destructive testing of stressed areas,early detection and timely treatment of potential defects are made possible,thereby reducing the risk of test failure of key moving parts,improving product test quality and service life,and helping other models bet⁃ter improve the design requirements and applications of testing,providing an important basis and research direction.

关 键 词：疲劳试验 关键动部件 应力集中 无损检测 表面裂纹 检测方法 

分 类 号：V263.6[航空宇航科学与技术—航空宇航制造工程]