理化检验：物理分册2011，Vol.47Issue(8)：527-530,533,5.
高速离心式压缩机叶片断裂失效分析
Failure Analysis on Fracture of Impeller Blades of High-speed Centrifugal Aircompressor
马小明 1胡林星1
作者信息
- 1. 华南理工大学机械与汽车工程学院,广州510640
- 折叠
摘要
Abstract
Impeller blades of high-speed centrifugal aircompressor fractured during operation process,and failure reasons was investigated by means of visual examination,chemical compositions analysis,mechanical properties testing,SEM observation,EDS analysis and metallographic examination.The results show that the main cause for fracture failure of the compressor blades was due to the high speed aluminum particles.The particles came from inter-stage cooler fins because of poor shell fluid layout design.A thick fouling layer was formed on the surface of the blades by the aluminum particles which brought about high frequency fatigue load to the opposite located blades and cracks initiated on the tip of the blades.Therefore the blade failed due to high frequency fatigue and fretting wear.The low impact toughness of the blade material also accelerated the crack propagation.关键词
压缩机/叶片/疲劳断裂失效/冲蚀磨损Key words
aircompressor/impeller blade/fatigue fracture failure/fretting wear分类
矿业与冶金引用本文复制引用
马小明,胡林星..高速离心式压缩机叶片断裂失效分析[J].理化检验：物理分册,2011,47(8):527-530,533,5.
