基于金属磁记忆检测技术的应力早期诊断方法  

The early diagnosing measure for stress based on metal magnetic memory testing technique

作　　者：于凤云[1] 弓乐[1] 吴淼[2] 

机构地区：[1]中国矿业大学(北京校区)机电与信息工程学院,北京100083 [2]黑龙江科技学院机械工程系,哈尔滨150027

出　　处：《机械设计与制造》2005年第6期10-12,共3页Machinery Design & Manufacture

基　　金：黑龙江省教育厅资助项目:10551276

摘　　要：金属磁记忆检测技术是对设备进行早期诊断,防止设备突发性疲劳破坏的一种无损检测新技术,这里从磁记忆检测的基础理论入手,分析了铁磁体的基本特性和与磁记忆有关的铁磁体的各种能量,得出磁场畸变的根本原因是应力作用下铁磁体磁弹性能的增加造成的。通过时构件动态磁参数的测量,能够发现应力集中区,实现对构件及设备的早期诊断。Metal magnetic memory testing technique is a kind of new nondestructive testing technique, which can diagnose equipment timely to prevent unexpected fatigue destruction. This paper analyses the basic characteristic of ferromagnetic and its energy related to magnetic memory from the fundamental theory of magnetic memory testing, which indicates that the main reason for magnetic field aberration is due to the increase of magnetoelasticity of ferromagnetic. The stress raiser can be found through the measurement of dynamic magnetic parameters of components so that the diagnosis to components and equipment is implemented timely.

关 键 词：金属磁记忆 应力 早期诊断 铁磁体 

分 类 号：TM937[电气工程—电力电子与电力传动] TH73[机械工程—仪器科学与技术]