Application of a Giant Magnetoresistive (GMR) sensor for characterization of corrosion in a laboratory specimen

被引：0
|
作者：
Ko, RT [1 ]
Blodgett, MP [1 ]
机构：
[1] USAF, Res Lab, Met Ceram & NDE Div, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA
来源：
REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION, VOLS 22A AND 22B | 2003年 / 20卷
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D O I：
暂无
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
This paper describes the use of a Giant Magnetoresistive (GMR) sensor to detect thickness variation in a multi-layered specimen. A series of frequency-response and modes-of-operation tests has been carried out to characterize a GMR sensor. Both the first and second harmonics of the GMR signal for corrosion detection were collected and analyzed. The experimental data showed that phase approach seemed to have better thickness discrimination over that of the magnitude approach.
引用
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页码：844 / 851
页数：8
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