作者：陈海龙1,2, 崔子浩1, 吴奇1, 熊湘曦1, 何洋1, 王长龙2
作者单位：1. 63850部队, 吉林 白城 137000;
2. 陆军工程大学石家庄校区, 河北 石家庄 050003
关键词：金属磁记忆;环境磁场;检测信号;缺陷;应力集中
摘要：
针对磁记忆检测中环境磁场对检测信号影响问题，首先详细分析试件放置方向变化时，不同类型损伤区域的磁场变化情况。然后根据磁记忆检测信号组成，研究环境磁场对磁记忆检测信号的影响机理。最后得出环境磁场对磁记忆检测信号的影响是环境磁场、被测试件自身磁化状态以及试件材料的磁特性共同作用的结果。当被测试件放置方向不同时，测得的磁场信号不是简单地在幅值上整体漂移，整体形貌上也可能会发生一定变化。在工程检测过程中，被测试件的放置方向应尽量保持不变。
Study on the influence of environmental magnetic field on metal magnetic memory detection signal
CHEN Hailong1,2, CUI Zihao1, WU Qi1, XIONG Xiangxi1, HE Yang1, WANG Changlong2
1. 63850 Troops, Baicheng 137000, China;
2. Shijiazhuang Campus, AEU, Shijiazhuang 050003, China
Abstract: Aiming at the problem of the influence of environmental magnetic field on the detection signal in magnetic memory testing, the changes of magnetic field in different damage areas were analyzed in detail when the direction of the specimen changed. Then, according to the composition of the magnetic memory testing signal, the mechanism of the influence of the environmental magnetic field on the magnetic memory testing signal is studied. Finally, it was concluded that the influence of the environmental magnetic field on the magnetic memory testing signal is the environmental magnetic field and the measured signal. The results of the interaction of the magnetization state of the specimen itself and the magnetic properties of the specimen material. When the test piece was placed in different directions, the measured magnetic field signal does not simply drift on the whole amplitude, but may also change on the overall morphology. The orientation of the tested piece should be kept as constant as possible in engineering practice.
Keywords: metal magnetic memory;environmental magnetic field;detection signal;defect;stress concentration
2019, 45(12):146-151 收稿日期: 2019-03-10;收到修改稿日期: 2019-05-16
基金项目: 河北省自然科学基金项目（E2015506004）
作者简介: 陈海龙(1989-),男,江苏滨海县人,工程师,博士,研究方向为电磁测试理论与技术
参考文献
[1] 陈海龙, 王长龙, 朱红运. 基于磁梯度张量的金属磁记忆检测方法[J]. 仪器仪表学报, 2016, 37(3):602-609
[2] 王长龙, 朱红运, 陈海龙, 等. 基于S变换的铁磁材料缺陷定位[J]. 中国测试, 2016, 42(7):15-19
[3] DUBOV A A. Study of metal properties using magnetic memory method[C]//Proceedings of the 7th European Conference on Nondestructive Testing. Copenhagen, 1998.
[4] 李云飞, 韦利明, 万强. X80管线钢塑性损伤诱发磁化无损评价研究[J]. 中国测试, 2016, 42(1):21-25
[5] 刘琳, 陈伟民, 章鹏, 等. 磁记忆拉伸应力测量中外磁场干扰的影响[J]. 仪器仪表学报, 2012, 33(10):2194-2199
[6] 李路明, 王晓凤, 黄松岭. 磁记忆现象和地磁场的关系[J]. 无损检测, 2003, 25(8):387-391
[7] 祖瑞丽, 任尚坤, 段振霞, 等. 磁场对铁磁试件力磁耦合关系的影响研究[J]. 中国测试, 2017, 43(10):127-133
[8] 于凤云, 张川绪, 吴淼. 检测方向和提离值对磁记忆检测信号的影响[J]. 机械设计与制造, 2006(5):118-120
[9] 王文江, 戴光. 疲劳断裂试件磁记忆检测结果及分析[J]. 大庆石油学院学报, 2005, 29(4):83-85
[10] 曾寿金, 江吉彬, 陈丙三, 等. 地球磁场对磁记忆检测信号的影响研究[J]. 重庆科技学院学报(自然科学版), 2011, 13(3):186-189
[11] 付美礼, 包胜, 楼煌杰, 等. 检测方位对金属磁记忆信号的影响[C]//第26届全国结构工程学术会议论文集(第Ⅲ册), 2017:595-600.
[12] 张静, 周克印, 姚恩涛, 等. 改进的金属磁记忆检测方法的探讨[J]. 理化检验, 2004, 40(4):183-186
[13] 张静, 周克印, 路琴. 受扭转类零件磁记忆信号的初步研究[J]. 理化检验, 2005, 41(12):616-619
[14] 王丹, 徐滨士, 董世运, 等. 关于金属磁记忆检测中背景磁场抑制的讨论[J]. 无损检测, 2007, 29(2):71-73, 99
[15] 陈海龙, 王长龙, 左宪章, 等. 基于磁记忆梯度张量信号的缺陷二维反演研究[J]. 兵工学报, 2017, 38(5):995-1001
