Study of pulse eddy current probes detecting cracks extending in all directions

被引：36

作者：

Shu, Li ^{[1
]}

Huang Songling ^{[1
]}

Wei, Zhao ^{[1
]}

Peng, Yu ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Elect Engn, State Key Lab Control & Simulat Power Syst & Gene, Rensselaer Polytech Inst, Beijing 100084, Peoples R China

来源：

SENSORS AND ACTUATORS A-PHYSICAL | 2008年 / 141卷 / 01期

基金：

中国国家自然科学基金;

关键词：

crack direction; symmetrical; self-nulling; sensitivity; probe design;

D O I：

10.1016/j.sna.2007.07.008

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：

Due to richness of frequency content and robustness of anti-interference, pulsed eddy current testing of cracks in conductive materials attracts great interests. The objective of this study is to identify the surface and subsurface cracks that probably extends in all directions with pulsed eddy current probe. Based on the principle that cracks crossing the eddy current path with a right angle help PEC probe to gain the highest sensitivity, some probes with improved structures are developed to detect cracks in all directions. First, the structures of probes are described and their detection mechanisms are deduced. Then, experiments are carried out to verify probes' performance. Comparison and further analysis are also derived with experimental results. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：13 / 19

页数：7

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