几种磁测残余应力方法及特点对比  

The compared on several methods & feature of residual stress testing based on magnetic effective

作　　者：王威[1,2] 

机构地区：[1]同济大学土木工程防灾国家重点实验室,上海200092 [2]西安建筑科技大学结构工程与抗震教育部重点实验室,陕西西安710055

出　　处：《四川建筑科学研究》2008年第6期74-76,共3页Sichuan Building Science

基　　金：中国博士后科学基金资助项目(20060400176)

摘　　要：对几种磁测残余应力的方法和特点进行了归纳对比,它们是磁巴克豪森效应应力检测方法,利用逆磁致伸缩效应测量应力,利用铁磁类材料的磁记忆检测应力分布,应力致磁各向异性法SMA(Stress-induced Magnetic Anisotropy)和磁致伸缩法(Magnetostriction)。从目前研究现状而言,利用Barkhausen效应实施铁磁类结构构件应力检测技术相对来说最为成熟和广泛,但它有自身的缺陷,故本文又介绍了1台新的磁力仪MAPS(Magnetic Anisotropy and Permeability System),并对MAPS及其他的磁力仪作了比较。Several method ＆ feature of residual stress testing based on magnetic effective have been summarized and compared in this paper. There are the method of residual stress testing by using the effective on the magnetic Barkhausen effect; the method of residual stress testing by using the inverse magnetostrictive effective; the method of residual stress testing by using the magnetic memory effective;the method of residual stress testing by using SMA （Stress-induced Magnetic Anisotropy） and Magnetostriction. Only the methods of stress testing by using Barkhausen noise effective is mostly confirmed and has more development prospects, but it has weakness which is wait to be overcome in the future. So a new residual stress measuring kit, MAPS （Magnetic Anisotropy and Permeability System）, which has obvious advantage over other residual stress testing methods based on magnetic effect, is introduced and emphasized.

关 键 词：残余应力 BARKHAUSEN效应 逆磁致伸缩 磁记忆 磁各向异性和磁致伸缩 MAPS 

分 类 号：TU312.3[建筑科学—结构工程]