基于小波变换的声发射模拟信号特性分析
Analysis of Simulated AE Signal Characters Based on Wavelet Transform
摘 要
小波变换作为一种新的信号处理方法，可对任一时刻、任一频段的声发射信号进行时频分析。通过基于Gaussian方程的Gabor小波及其Fourier变换，研究了Q235B钢板中三种声发射模拟信号的特点及三种信号的区分和识别。试验表明，基于小波变换的信号处理方法对于研究实际声发射信号的特点、声发射源的特征和定位以及传感器选择有一定的帮助。
小波变换
信号处理
Acoustic emission
Wavelet transform
Signal processing
Abstract
As a kind of new method of signal analysis and processing, the wavelet transform could be used to analyze any time and any frequency of AE signal in the time and frequency domain. The wavelet transform is applied to AE signal processing and it will be helpful to the development and popularization of AE technique. The characters and recognition of simulated AE signals in Q235B were researched by using Gabor wavelet and Fourier transform, which were based on Gaussian function. The experiment showed that it would be helpful to study the characters of AE signal and source and choose the right sensor.
中图分类号 TG115.28
所属栏目 科研成果与学术交流
基金项目
收稿日期 2006/12/7
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备注张运强(1981-)，男，硕士研究生。
引用该论文: ZHANG Yun-Qiang,NIU Wei-Fei,TAN Wei. Analysis of Simulated AE Signal Characters Based on Wavelet Transform[J]. Nondestructive Testing, 2008, 30(1): 9～12
张运强,牛卫飞,谭 蔚. 基于小波变换的声发射模拟信号特性分析[J]. 无损检测, 2008, 30(1): 9～12
被引情况:
【1】蒋林林,韩文礼,徐忠苹,王志涛,苏碧煌, "储罐底板声发射在线检测技术的研究现状",腐蚀与防护 37, 375-380(2016)
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参考文献
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【3】Jeong H. Analysis of plate wave propagation in anisotropic laminates using a wavelet transform[J]. NDT＆E International,200l,34(3):185-190.
【4】Surgeon M, Wevers M. Modal analysis of acoustic emission signal from CFRP laminates[J]. NDT＆E International,1999,32(6):311-322.
【5】Hyunje Jeong, Young-Su jiang. Wavelet analysis of plate wave propagation in composite laminaes[J]. Composite Structure,2000,49(4):443-450.
【6】刘松平，Gorman M，陈积懋.模态声发射检测技术[J].无损检测,2000,22(1):38-41.
【7】Suzuki H, Kinjo T, Hayashi Y, et al. Wavelet transform of acoustic emission signals[J]. Journal of Acoustic Emission,1996,14(2):69-84.
【8】Gorman M G, Prosser W H. AE source orientation by plate wave analysis[J]. Acoust Emission,1990,9(4):283-288.
【9】Hyunje Jeong, Young-Su jiang. Fracture source location in thin plates using the wavelet transform of disperse waves[J]. IEEE Transactions on Transonic, Ferroelectrics, and Frequency Control,2000,47(3):612-619.
【10】GB/T 18182—2000 金属压力容器声发射检测及结果评价方法[S].
【2】李光海，刘时风.声发射信号分析技术及进展[A].大庆：第十届全国声发射会议论文集[C],2004:52-62.
【3】Jeong H. Analysis of plate wave propagation in anisotropic laminates using a wavelet transform[J]. NDT＆E International,200l,34(3):185-190.
【4】Surgeon M, Wevers M. Modal analysis of acoustic emission signal from CFRP laminates[J]. NDT＆E International,1999,32(6):311-322.
【5】Hyunje Jeong, Young-Su jiang. Wavelet analysis of plate wave propagation in composite laminaes[J]. Composite Structure,2000,49(4):443-450.
【6】刘松平，Gorman M，陈积懋.模态声发射检测技术[J].无损检测,2000,22(1):38-41.
【7】Suzuki H, Kinjo T, Hayashi Y, et al. Wavelet transform of acoustic emission signals[J]. Journal of Acoustic Emission,1996,14(2):69-84.
【8】Gorman M G, Prosser W H. AE source orientation by plate wave analysis[J]. Acoust Emission,1990,9(4):283-288.
【9】Hyunje Jeong, Young-Su jiang. Fracture source location in thin plates using the wavelet transform of disperse waves[J]. IEEE Transactions on Transonic, Ferroelectrics, and Frequency Control,2000,47(3):612-619.
【10】GB/T 18182—2000 金属压力容器声发射检测及结果评价方法[S].
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