Double core giant magneto-impedance sensors for the inspection of magnetic flux leakage from metal surface cracks

被引：62

作者：

Tehranchi, M. M. ^{[1
,2
]}

Ranjbaran, M. ^{[1
]}

Eftekhari, H. ^{[1
]}

机构：

[1] Shahid Beheshti Univ, Laser & Plasma Res Inst, GC, Tehran 1983963113, Iran

[2] Shahid Beheshti Univ, Dept Phys, GC, Tehran 1983963113, Iran

来源：

SENSORS AND ACTUATORS A-PHYSICAL | 2011年 / 170卷 / 1-2期

关键词：

Magnetic flux leakage; Giant magneto-impedance sensor; Crack detection; Theoretical dipole model; MAGNETOIMPEDANCE; FIELD;

D O I：

10.1016/j.sna.2011.05.031

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Magnetic flux leakage inspection is one of the most common nondestructive techniques used to detect crack-like defects in ferromagnetic materials. In order to improve the accuracy and reliability of crack detection, sensors based on the giant magneto-impedance (GMI) effect are suitable candidates for the magnetic sensors used in MFL detection systems. In this paper, we have introduced a double-core GMI sensor based on Co-based amorphous wires for the detection of rectangular shaped surface cracks. A theoretical method compared with experimental measurements indicates that an increase in the crack dimension is observed via an increase in the sensor signal amplitude. Magnetic imaging of different cracks shows that there is a good correlation between the size and position of cracks and the sensor signals: which can lead to improvement of the MFL test industry. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：55 / 61

页数：7

共 33 条

[1] Characterization of surface-breaking cracks using one tangential component of magnetic leakage field measurements [J].