金属疲劳损伤在线监测方法综述  

A review of on-line monitoring methods for metal fatigue damage

作　　者：张奎良 贾朋刚[1] 李海军 许佳丽 李婳 ZHANG Kuiliang;JIA Penggang;LI Haijun;XU Jiali;LI Hua(Harbin Electric Machinery Company Ltd.,Harbin 150040,China;China Three Gorges Construction Engineering Corporation,Chengdou 610000,China)

机构地区：[1]哈尔滨电机厂有限责任公司,哈尔滨150040 [2]中国三峡建工(集团)有限公司,成都610000

出　　处：《上海大中型电机》2024年第2期38-41,共4页Shanghai Medium and Large Electrical Machines

摘　　要：疲劳在线监测的主要目标是监测疲劳裂纹萌生及获得疲劳裂纹扩展速率,从而提供预警。声发射在线监测技术因其能实现对构件的疲劳失效历程开展实时、在线监测,而在疲劳失效在线监测方面得到了普遍的使用。本文简要介绍了应变片监测和光纤Bragg光栅监测技术,重点介绍了声发射技术在发电设备方面的疲劳失效过程的在线监测研究进展。The main objective of online fatigue monitoring is to monitor fatigue crack initiation and obtain fatigue crack growth rate,so as to provide early warning.In terms of acoustic emission on-line monitoring technology,it is widely used in on-line monitoring of fatigue failure because it can realize real-time and on-line monitoring of fatigue failure history of components.In this paper,strain gauge monitoring and fiber Bragg grating monitoring technology are briefly introduced,and the research progress of online monitoring of fatigue failure process of acoustic emission technology in power generation equipment is emphasized.

关 键 词：疲劳损伤 裂纹扩展 声发射 在线监测 

分 类 号：TM306[电气工程—电机]