| 脉冲涡流金属厚度检测信号及其特征提取 |
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| 引用本文： | 周德强,李勇,张秋菊,尤丽华. 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, 0(15): 1771-1773,1778 |
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| 作者姓名： | 周德强 李勇 张秋菊 尤丽华 |
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| 作者单位： | 江南大学;无锡国盛精密模具有限公司;西安交通大学 |
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| 基金项目： | 国家自然科学基金资助项目(51107053,51007069) |
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| 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。
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| 关 键 词： | 脉冲涡流 厚度测量 特征提取 功率谱 |
Feature Extraction of Pulsed Eddy Current Signals on Metal Thickness Measurement |
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| Zhou Deqiang,Li Yong,Zhang Qiuju,You Lihua. Feature Extraction of Pulsed Eddy Current Signals on Metal Thickness Measurement[J]. China Mechanical Engineering, 2012, 0(15): 1771-1773,1778 |
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| Authors: | Zhou Deqiang Li Yong Zhang Qiuju You Lihua |
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| Affiliation: | 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 |
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| 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. |
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| Keywords: | pulsed eddy current(PEC) thickness measurement feature extraction power spectrum |
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