磁测残余应力方法及特点对比

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(StressinducedMagneticAnisotropy)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,故又介绍了一台新的磁力仪MAPS,并对MAPS及其他的磁力仪作了比较。

COMPARED ON METHODS & FEATURE OF RESIDUAL STRESS TESTING BASED ON MAGNETIC EFFECTIVE

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,which has obvious advantage over other residual stress testing methods based on magnetic effect,is presented and emphasized.