[1]苏三庆,高志刚,王 威.受拉钢丝应力状态的磁记忆信号峰峰值判别技术[J].西安建筑科技大学学报(自然科学版),2018,50(02):155-161.
　SU Sanqing,GAO Zhigang,WANG Wei.Discrimination of stress stage about steel wire under tension based on peak-peak difference value of magnetic memory signals[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2018,50(02):155-161.
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受拉钢丝应力状态的磁记忆信号峰峰值判别技术()
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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02期
页码:
155-161
栏目:
出版日期:
2018-05-28

文章信息/Info

Title:
Discrimination of stress stage about steel wire under tension based on peak-peak difference value of magnetic memory signals
作者:
苏三庆1 ; 高志刚2; 王 威1
1.西安建筑科技大学 土木工程学院，陕西 西安710055；2. 西安科技大学 建筑与土木工程学院，陕西 西安710054
Author(s):
SU Sanqing1 ; GAO Zhigang2; WANG Wei1
1.School of civil Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China；2.School of Architecture and civil Engineering, Xi’an University of Science and Technology, Xi’an 710054, China
关键词:
钢丝; 缺陷; 磁记忆; 波峰波谷; 判别技术
Keywords:
steel wire;  defect;  metal magnetic memory;  peaks and troughs;  recognition technology
分类号:
TG115.28；TD532
文献标志码:
A
摘要:
带缺陷钢丝在单轴拉伸应力状态下，随着荷载的增加磁记忆信号曲线趋于稳定，后期出现部分重叠．同时在缺陷两端出现波峰波谷现象，波峰波谷的峰值差呈递增状态，但波峰波谷的水平间距并没有很好的规律性．在缺陷处出现非线性平台，当荷载发展到一定阶段后非线性段消失，代之以良好的线性段．分析缺陷处的应力状况，可发现应力差距大的部位其磁记忆信号也存在较大的差异，波峰波谷的峰值差可反映应力的差值水平，同时通过波峰波谷差值曲线可以很好地反应钢丝的全过程受力状态．因此，可作为一种磁记忆检测技术应用于钢丝检测的判别手段．
Abstract:
The tensile experiment of steel wire with defects was carried on, and the magnetic signals were extracted in each loads. The results shows that with the increase of load, the curve of magnetic memory signal tended to be stabilize, and the curve exhibit partial overlap later. Meanwhile, the phenomena of peak and trough occurred on the two ends of the defect. The difference value between the peak and trough changed incrementally, but the horizontal interval between the peak and the trough have no clear regularity. Nonlinear stability of magnetic curve appeared at defect zone, and disappeared when the load increased to a certain degree. Based on the analysis of the stress state at defect zone, the difference of the magnetic memory signals changed obviously with the increase of stress difference. The numerical difference between the peak and the trough could reflect the stress difference, and the analysis of the curve between the peak and the trough could reflect the stress state of the steel wire during the whole loading process. Therefore, it can be determined that the magnetic memory testing technique can be applied in steel wire.

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更新日期/Last Update: 2018-05-28