Feature Extraction of Pulsed Eddy Current Signals on Metal Thickness Measurement

China Mechanical Engineering ›› 2012, Vol. 23 ›› Issue (15): 1771-1773,1778.

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Feature Extraction of Pulsed Eddy Current Signals on Metal Thickness Measurement

Zhou Deqiang1,2;Li Yong3;Zhang Qiuju1;You Lihua1

1.Jiangnan University,Wuxi,Jiangsu,214122
2.Wuxi G.S Precision Tool Co.,Ltd.,Wuxi,Jiangsu,214024
3.Xi'an Jiaotong University,Xi'an,710049

Online:2012-08-10 Published:2012-09-05
Supported by:
National Natural Science Foundation of China（No. 51107053，51007069）

脉冲涡流金属厚度检测信号及其特征提取

周德强1,2;李勇3;张秋菊1;尤丽华1

1. 江南大学,无锡,214122
2.无锡国盛精密模具有限公司,无锡,214024
3.西安交通大学,西安,710049

基金资助:
国家自然科学基金资助项目（51107053，51007069）
National Natural Science Foundation of China（No. 51107053，51007069）

Abstract

Abstract:

This paper introduced the current research states of PEC thickness testing. The main purpose of this paper is to improve the properties of the PEC sensor, the sensitivity and linearity of current features for metal thickness measurement were evaluated in both of time and frequency domain using PEC nondestructive testing (NDT). Experimental study was conducted with aluminum slabs in different thicknesses. Based on the comparative study of the feature extraction techniques, the most suitable feature was discussed. 

Key words: pulsed eddy current(PEC), thickness measurement, feature extraction, power spectrum

摘要：

介绍了脉冲涡流厚度检测信号及其特征提取的研究现状。采用脉冲涡流检测装置在铝合金板上进行了厚度实验,并对脉冲涡流厚度检测响应信号进行了特征提取,分析了其灵敏度与线性度,给出了最合适的特征值。


关键词: 脉冲涡流, 厚度测量, 特征提取, 功率谱

CLC Number:

TG115.28

ZHOU De-Jiang-1, 2, LI Yong-3, ZHANG Qiu-Ju-1, YOU Li-Hua-1. Feature Extraction of Pulsed Eddy Current Signals on Metal Thickness Measurement[J]. China Mechanical Engineering, 2012, 23(15): 1771-1773,1778.

周德强1, 2, 李勇3, 张秋菊1, 尤丽华1. 脉冲涡流金属厚度检测信号及其特征提取[J]. 中国机械工程, 2012, 23(15): 1771-1773,1778.

References

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Feature Extraction of Pulsed Eddy Current Signals on Metal Thickness Measurement

脉冲涡流金属厚度检测信号及其特征提取

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