Eddy Current Transducer with Rotating Permanent Magnets to Test Planar Conducting Plates

被引：10

作者：

Chady, Tomasz ^{[1
]}

Grochowalski, Jacek M. ^{[1
]}

机构：

[1] West Pomeranian Univ Technol, Fac Elect Engn, Ul Sikorskiego 37, PL-70313 Szczecin, Poland

来源：

SENSORS | 2019年 / 19卷 / 06期

关键词：

eddy current testing; nondestructive testing; applied electrotechnics; permanent magnets; CURRENT SENSOR; NONDESTRUCTIVE EVALUATION; PERMEABILITY; INSPECTION; THICKNESS; LENGTH;

D O I：

10.3390/s19061408

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

In this paper, we present an eddy current transducer with rotating permanent magnets for the inspection of planar conducting plates. The transducer consists of a rotating head with permanent magnets, which is used to generate variable magnetic fields and thus induce eddy currents in the tested material. Two Hall sensors connected in a differential manner are used to detect a nonuniform distribution of eddy currents induced in a specimen containing a defect. To prove the usability of the transducer, a number of experiments were conducted on thick aluminum samples containing notches at different depths. Selected results of the achieved measurements are presented.

引用

页数：13

共 32 条

[1] Eddy currents induced in a conducting rod of finite length by a coaxial encircling coil [J].