金属磁记忆缺陷特征信号的研究

详细信息

Research on Magnetic Memory Defect Character Signal

摘要: 以45号冷轧钢为研究对象, 对三种不同缺陷类型的平板进行了拉伸试验, 提取了平板试样每条检测线上随着拉应力的增大过程中的磁记忆信号, 获得了缺陷特征信号, 并进行了对比分析。结果表明, 缺陷异变磁记忆信号的变化可以反映载荷作用的历史和试件的应力和变形情况。
- 金属磁记忆检测 /
- 缺陷特征信号 /
- 拉伸试验
Abstract: Taking No45 cold rolled steel as the research object, experiments on three kinds of defect sample were carried out, defect character signal of each test lines along with stress increasing was extracted and analyzed, and an analysis on the experiment results was made. The results showed that abnormality changing of defect magnetic memory signal could speculate history of loading, also could know situatation of stress and deformation.
- Metal magnetic memory testing /
- Defect character signal /
- Tensile testing

[1]	任吉林, 林俊明.金属磁记忆检测技术[M].北京: 中国电力出版社, 2000: 44-52.
[2]	Doubov A. Express method of quality control of a spot resistance welding with usage of metal magnetic memory[J]. Welding in the World, 2002(46): 317-320
[3]	董丽虹, 徐滨士, 董世运, 等.拉伸及疲劳载荷对低碳钢磁记忆信号的影响[J].中国机械工程, 2006, 17(7): 742-745.
[4]	董丽虹, 徐滨士, 董世运, 等.金属磁记忆技术检测低碳钢静载拉伸破坏的试验研究[J].材料工程, 2006, 17(3): 40-43.