Analysis of domain wall dynamics based on skewness of magnetic Barkhausen noise for applied stress determination

被引：53

作者：

Ding, Song ^{[1
,2
]}

Tian, GuiYun ^{[2
,3
]}

Dobmann, Gerd ^{[2
]}

Wang, Ping ^{[2
]}

机构：

[1] Nanjing Tech Univ, Coll Elect Engn & Control Sci, Nanjing 211816, Jiangsu, Peoples R China

[2] Nanjing Univ Aeronaut & Astronaut, Sch Automat Engn, Nanjing 210016, Jiangsu, Peoples R China

[3] Newcastle Univ, Sch Elect & Elect Engn, Newcastle NE1 7RU, Tyne & Wear, England

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2017年 / 421卷

基金：

英国工程与自然科学研究理事会; 中国国家自然科学基金;

关键词：

Applied stress; Magnetic Barkhausen Noise; Skewness; Domain wall motion; STEEL; FREQUENCY;

D O I：

10.1016/j.jmmm.2016.08.030

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Skewness of Magnetic Barkhausen Noise (MBN) signal is used as a new feature for applied stress determination. After experimental studies, skewness presents its ability for measuring applied tensile stress compared with conventional feature, meanwhile, a non-linear behavior of this new feature and an independence of the excitation conditions under compressive stress are found and discussed. Effective damping during domain wall motion influencing the asymmetric shape of the MBN statistical distribution function is discussed under compressive and tensile stress variation. Domain wall (DW) energy and distance between pinning edges of the DW are considered altering the characteristic relaxation time, which is the reason for the non-linear phenomenon of skewness. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：225 / 229

页数：5

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