转子裂纹检测与寿命预测技术研究  

FATIGUE CRACK GROWTH MONITORING AND LIFE PREDICTION OF ROTOR

作　　者：张晓慧[1] 刘彤 刘国宁[1] 赵明皓[1] 刘元杰[1] 

机构地区：[1]郑州机械研究所先进制造技术研究中心,郑州450052

出　　处：《理化检验（物理分册）》2001年第1期21-23,共3页Physical Testing and Chemical Analysis(Part A:Physical Testing)

摘　　要：现代的抗疲劳设计法——损伤容限设计使零件在出现疲劳裂纹后通过严格的检修、剩余寿命计算和断裂控制仍能安全使用 ,使充分利用零件的剩余强度成为可能。对损伤容限设计的关键技术——初始缺陷或服役中出现的疲劳裂纹检测和疲劳剩余寿命预测技术进行了研究。成功地研制了一套性能优良的交流电位表面裂纹监测系统 ,分辨率为 0 .1 mm,测量精度达到± 2 % ,测量范围为 0～ 1 0 0 mm;开发出一套微机平台上的基于断裂力学的 (含表面裂纹 )转子剩余寿命计算程序 ,为分析裂纹扩展形态和概率断裂力学方法估算剩余寿命提供了快速计算途径。有较强的工程实用性和良好的市场开发前景。Fatigue fracture is the main failure mode for rotary machnie. So fatigue factor should be considered in modern machinery design. Using damage tolerance design method, it is possible to fully exploit a part in service by strictly monitoring the crack growth behavior and then estimating the remnant life. Study in this paper is fixed on monitoring the initial flaws and the fatigue crack in a rotor thus set up a fundamental base for theoretical analysis and prediction for rotors remnant life. A PC based montitoring & assessment system for rotor has been successfully developed based on ACPD. The principal specifications are: measuring range 0 100mm, accuracy ±2%, and the resolution 0.1mm. In addition, a software for predicting the remnant life is also available that has been integrated with the system.

关 键 词：疲劳裂纹 监测系统 剩余寿命预测 转子裂纹检测 缺陷 断裂力学分析 损伤容限设计 

分 类 号：TB303[一般工业技术—材料科学与工程] TH122[机械工程—机械设计及理论]