用金属磁记忆方法检测应力分布  

STRESS DISTRIBUTION TESTING BY METAL MAGNETIC MEMORY METHOD

作　　者：黄松岭[1] 李路明[1] 汪来富[1] 刘时风[1] 

机构地区：[1]清华大学机械工程系,北京100084

出　　处：《无损检测》2002年第5期212-214,共3页Nondestructive Testing

基　　金：国家自然科学基金资助项目 (5 0 0 0 10 0 6)

摘　　要：金属磁记忆检测技术是无损检测领域的一门新兴学科 ,简要介绍磁记忆的检测原理 ,并采用基于薄膜磁阻元件的一维弱磁测量系统对焊缝工件进行磁记忆检测 ,检测结果与盲孔法应力分布检测结果有较好的一致性 ,表明磁记忆检测技术可应用于焊缝区应力分布检测。Metal magnetic memory (MMM) technology is a new NDT method first introduced by Russian researchers. MMM testing principle was presented, and the magnetic flux leakage (MFL) distribution of the specimen with welded seam was tested using the one dimension weak magnetic signal testing system based on film magnetic resistance device. Experimental data showed that the MFL signal distribution was corresponding to the result of small hole stress measuring method.

关 键 词：金属 磁记忆方法 检测 应力分布 磁性检验 磁记忆材料 漏磁 

分 类 号：TG115.284[金属学及工艺—物理冶金]