Optimised Eddy Current Sensor Improved Defect Detection on Hot Wire Steel

被引：3

作者：

Ricken, Werner

Hartmann, Knut ^{[1
]}

Becker, Wolf-Juergen ^{[1
]}

Perez, Carmen ^{[2
]}

Gonzalo, Leandro ^{[2
]}

机构：

[1] Univ Kassel, Fachbereich Elektrotechn Informat, Fachgebiet Messtechn, D-34109 Kassel, Germany

[2] Tecnatom SA, Madrid 28709, Spain

来源：

TM-TECHNISCHES MESSEN | 2008年 / 75卷 / 09期

关键词：

Eddy-current sensor; hot wire inspection; defect detection; sensor design;

D O I：

10.1524/teme.2008.0860

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Different eddy-current coil arrangements have been investigated. Impedance differential and emission reception modes were investigated to find the best solution for a high sensitivity and robustness. An eddy-current sensor array is under development to detect long longitudinal cracks. The use of soft-magnetic material improves the crack detection of encircling coils. The measurement data show a low lift-off effect. Therefore the S/N ratio achieves values to detect small size defects.

引用

页码：501 / 507

页数：7