基于休哈特控制图的磁记忆早期损伤检测方法

doi:10.16265/j.cnki.issn1003-3033.2017.02.015

中国安全科学学报 ›› 2017, Vol. 27 ›› Issue (2): 81-85.doi: 10.16265/j.cnki.issn1003-3033.2017.02.015

基于休哈特控制图的磁记忆早期损伤检测方法

冷建成¹ 教授, 张经纬¹, 高雅田²

1 东北石油大学机械科学与工程学院,黑龙江大庆 163318
2 东北石油大学计算机与信息技术学院, 黑龙江大庆 163318

收稿日期:2016-12-08 修回日期:2017-01-11 出版日期:2017-02-28 发布日期:2020-11-22
作者简介:冷建成 (1977—),男,河南信阳人,博士,教授,主要从事无损检测、结构健康监测与损伤诊断研究。E-mail:lbyljc@163.com。
基金资助:
国家自然科学基金资助(11472076, 51607035);东北石油大学校培育基金资助(PY120225);中国博士后科学基金资助(2015M581426)。

Magnetic memory detection method for early damage based on Shewhart control chart

LENG Jiancheng¹, ZHANG Jingwei¹, GAO Yatian²

1 School of Mechanical Science & Engineering, Northeast Petroleum University, Daqing Heilongjiang 163318, China
2 School of Computer & Information Technology, Northeast Petroleum University, Daqing Heilongjiang 163318, China

Received:2016-12-08 Revised:2017-01-11 Online:2017-02-28 Published:2020-11-22

摘要/Abstract

摘要： 为完善金属磁记忆检测早期损伤的定性定量评价方法,开展Q235钢圆棒试件扭转试验。利用应力集中磁指示仪,记录不同扭矩作用下的试件表面的磁记忆信号的切向分量H_x和法向分量H_y。进而提出基于休哈特控制图的磁记忆信号早期损伤检测方法。结果表明,磁信号在试件屈服时发生明显跳变,此时合成磁场梯度绝对值正好达到最大;借助休哈特控制图,能消除梯度值波动对信号判断的干扰,并能给出试件产生屈服时的准确异常预警范围,从而较好地实现磁记忆早期损伤的快速准确识别。

关键词: 金属磁记忆, 休哈特控制图, 早期损伤, 扭转试验, 梯度

Abstract: In order to perfect the qualitative and quantitative methods for evaluating metal early damage using magnetic memory technique, torsion tests of circular specimens made of Q235 steel were conducted.The tangential component H_x and normal component H_y of magnetic memory signals under different torques were recorded by a stress concentration indicator. An early damage diagnosis approach via magnetic memory signals based on Shewhart control chart was developed. The results show that the magnetic signal produces an sharp change when the specimen is yielding, corresponding to the maximum synthetic magnetic field gradient value, and that having the aid of the Shewhart control chart the interference of fluctuating gradients in the judgement can be eliminated abnormal warning ranges can be indicated accurately when yielding, and quick and accurate identification of early damage.

Key words: metal magnetic memory, Shewhart control chart, early damage, torsion test, magnetic field gradient

中图分类号:

X924.2

冷建成, 张经纬, 高雅田. 基于休哈特控制图的磁记忆早期损伤检测方法[J]. 中国安全科学学报, 2017, 27(2): 81-85.

LENG Jiancheng , ZHANG Jingwei , GAO Yatian. Magnetic memory detection method for early damage based on Shewhart control chart[J]. China Safety Science Journal, 2017, 27(2): 81-85.

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基于休哈特控制图的磁记忆早期损伤检测方法

Magnetic memory detection method for early damage based on Shewhart control chart

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