一种检测铁磁材料应力的磁各向异性方法  

Magnetic Anisotropy Method for Detecting Stress of Ferromagnetic Materials

作　　者：邱忠超 张瑞蕾 李立新 于瑞红 杨敬松 QIU Zhong chao;ZHANG Rui lei;LI Li xin;YU Rui hong;YANG Jing song(School of Electronic Science and Control Engineering,Institute of Disaster Prevention,Langfang 065201,China;School of Emergency Management,Institute of Disaster Prevention,Langfang 065201,China)

机构地区：[1]防灾科技学院电子科学与控制工程学院,河北廊坊065201 [2]防灾科技学院应急管理学院,河北廊坊065201

出　　处：《仪表技术与传感器》2020年第4期94-97,共4页Instrument Technique and Sensor

基　　金：河北省高等学校科学技术研究项目(Z2019017);中央高校基本科研业务费青年教师资助计划项目(Z2019017);国家重点研发计划项目(2018YFC1503801)。

摘　　要：对工程中广泛使用的铁磁材料进行应力检测与评估,一直都是无损检测领域研究的重点与难点。针对铁磁构件应力至今仍难以有效检测的问题,提出采用基于逆磁致伸缩效应的磁各向异性方法对铁磁构件应力进行检测。基于铁磁材料的逆磁致伸缩效应,研制了一种四足探头磁各向异性传感器,并通过16MnR钢平板试件单向静载拉伸实验,对传感器的有效性进行验证。结果表明,磁各向异性四足探头传感器可以有效检测16MnR钢平板试件的应力集中位置,且应力与磁信号存在较好的的线性相关性,这为铁磁构件的应力检测提供了一条新思路。Stress detection and evaluation of ferromagnetic materials widely used in engineering has always been the focus and difficulty of research in the field of non-destructive testing.Aiming at the problem that the stress of ferromagnetic members is still difficult to detect effectively,the magnetic anisotropy method based on inverse magnetostrictive effect is proposed to detect the stress of ferromagnetic members.Based on the inverse magnetostrictive effect of ferromagnetic materials,a four-legged probe magnetic anisotropy sensor was developed,and the effectiveness of the sensor was verified by a one-way static load tensile test of 16 MnR steel flat specimens.The results show that the magnetic anisotropy four-foot probe sensor can effectively detect the stress concentration position of 16 MnR steel flat specimens,and there is a good linear correlation between stress and magnetic signal,which provides a new idea for stress detection of ferromagnetic components.

关 键 词：磁各异性法 逆磁致伸缩效应 应力检测 四足探头 

分 类 号：TG115.28[金属学及工艺—物理冶金]