[1]苏三庆,何洋,王威,等.钢结构疲劳裂纹发展对磁记忆信号变化的影响机制研究[J].西安建筑科技大学学报(自然科学版),2018,50(06):771-775.[doi:10.15986/j.1006-7930.2018.06.001]
　SU Sanqing,HE Yang,WANG Wei,et al.The research influence mechanism for the change of Metal Magnetic Memory signal by the fatigue crack developing of steel structure[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2018,50(06):771-775.[doi:10.15986/j.1006-7930.2018.06.001]
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钢结构疲劳裂纹发展对磁记忆信号变化的影响机制研究()
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西安建筑科技大学学报（自然科学版）[ISSN:1006-7930/CN:61-1295/TU]

卷:
50
期数:
2018年06期
页码:
771-775
栏目:
出版日期:
2018-12-31

文章信息/Info

Title:
The research influence mechanism for the change of Metal Magnetic Memory signal by the fatigue crack developing of steel structure
文章编号:
1006-7930(2018)06-0771-05
作者:
苏三庆; 何洋; 王威; 杨熠奕; 韦璐茜; 黄思考; 王雅慧
西安建筑科技大学 土木工程学院，陕西 西安 710055
Author(s):
SU Sanqing;  HE Yang;  WANG Wei;  YANG Yiyi;  WEI Luxi;  HUANG Sikao;  WANG Yahui
School of Civil Engineering, Xi′an Univ. of Arch. ＆ Tech., Xi′an 710055,China
关键词:
疲劳裂纹; 应力集中; 裂纹萌生; 磁导率; 磁荷
Keywords:
fatigue crack;  strss concentration;  crack initiation;  magneto conductivity;  magnetic charge
分类号:
TU391
DOI:
10.15986/j.1006-7930.2018.06.001
文献标志码:
A
摘要:
金属磁记忆检测技术是目前唯一可以检测出裂纹萌生阶段应力集中状态的无损检测技术，因此很有必要研究疲劳裂纹的发展对磁性号的影响机制．利用磁记忆信号对疲劳损伤进行诊断和预防，就具有非常重要的理论意义及工程实用价值．分析了裂纹损伤发展过程的应力状态、能量转化方式以及磁导率的变化情况，然后从微观角度分析这些因素对磁矩、磁畴以及磁荷产生的影响，从而揭示了疲劳裂纹发展对磁信号的影响机制．
Abstract:
The Metal Magnetic Memory technique is the only effective method to detect the stress concentration at the crack initiation stage. It is important to figure out the effect mechanism of crack developing to magnetic signal, which can be used to diagnose and prevent crack damage. The stress condition, the ways of energy exchange and the change of magneto conductivity among the process of crack damage development are analyzed here. And then the effect on the magnetic moment, magnetic domain and magnetic charge given by those facts is analyzed, and the influence mechanism of fatigue crack to magnetic signal is made clear.

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备注/Memo

备注/Memo:
收稿日期:2017-04-30修改稿日期:2018-10-22
基金项目:国家自然科学基金面上项目(51878548,51578449)；陕西省自然科学基础研究计划重点项目(2018JZ5013)
第一作者:苏三庆(1961-)，男，教授，主要从事结构抗震设计、健康监测方面的研究．E-mail：sussq@xauat.edu.cn
更新日期/Last Update: 2019-02-14