Variation regularity of metal magnetic memory signals with inspecting time-interval and location

被引：4
作者：
Yan Chun-yan [1 ]
Li Wu-shen
Di Xin-jie
Xue Zhen-kui
Bai Shi-wu
Liu Fang-ming
机构：
[1] Tianjin Univ, Sch Mat Sci & Engn, Tianjin 300073, Peoples R China
[2] Petr Gas Pipeline Res Inst China, Langfang 065000, Peoples R China
来源：
JOURNAL OF CENTRAL SOUTH UNIVERSITY OF TECHNOLOGY | 2007年 / 14卷 / 03期
基金：
高等学校博士学科点专项科研基金; 中国国家自然科学基金;
关键词：
nondestructive testing; metal magnetic memory; inspecting interval; inspecting location;
D O I：
10.1007/s11771-007-0063-7
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Influences of inspecting time-interval and location on varying behavior of metal magnetic memory (MMM) signals of defects were studied. Different areas in two precracked weldments were inspected at different time-intervals by type TSC-1M-4 stress-concentration magnetic inspector to obtain MMM signals. Mechanisms of MMM signals varying behavior with inspecting time and space were analyzed and discussed respectively. It is found that MMM signals don't change with inspecting time-interval, since stress field and magnetic leakage field maintain unchanged at any time after welding. On the other hand, MMM signals differ greatly for different inspecting locations, because stress field and magnetic leakage field are unevenly distributed in defective ferromagnetic materials.
引用
收藏
页码：319 / 323
页数：5
相关论文
共 16 条
  • [1] Origins of the magnetomechanical effect
    Bulte, DP
    Langman, RA
    [J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2002, 251 (02) : 229 - 243
  • [2] Magnetic evaluation of fatigue damage in train axles without artificial excitation
    School of Aerospace, Tsinghua University, Beijing 100084, China
    不详
    [J]. Insight Non Destr Test Cond Monit, 2006, 6 (342-345): : 342 - 345
  • [3] Doubov A., 1998, Weld. World, V41, P196
  • [4] DOUBOV AA, 2002, WELD WORLD, V46, P29, DOI DOI 10.1007/BF03377346
  • [5] DOUBOV AA, 1998, P 7 EUR C NOND TEST, P1266
  • [6] DOUBOV AA, 2002, 8 ECNDT P, P132
  • [7] Dubov A., 2006, CINDE Journal, V27, P16
  • [8] Dubov AA, 1997, WELD INT, V11, P410, DOI [10.1080/09507119709451989, DOI 10.1080/09507119709451989]
  • [9] Magnetic evaluation method for stress annealing of ferromagnetic materials
    Huang, SL
    Li, LM
    Wang, XF
    [J]. MATERIALS TECHNOLOGY, 2005, 20 (01) : 5 - 6
  • [10] Magnetic field properties caused by stress concentration
    Huang, SL
    Li, LM
    Shi, KR
    Wang, XF
    [J]. JOURNAL OF CENTRAL SOUTH UNIVERSITY OF TECHNOLOGY, 2004, 11 (01): : 23 - 26
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