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基于改进HHT的多模式Lamb波信号的时频分析

郑祥明, 王 杜, 杨 齐, 唐正连, 张 春

郑祥明, 王 杜, 杨 齐, 唐正连, 张 春. 基于改进HHT的多模式Lamb波信号的时频分析[J]. 无损检测, 2008, 30(5): 271-275.
引用本文: 郑祥明, 王 杜, 杨 齐, 唐正连, 张 春. 基于改进HHT的多模式Lamb波信号的时频分析[J]. 无损检测, 2008, 30(5): 271-275.
ZHENG Xiang-Ming, WANG Du, YANG Qi, TANG Zheng-Lian, ZHANG Chun. Time-Frequency Analysis of Multi-Mode Lamb Waves by Improved HHT[J]. Nondestructive Testing, 2008, 30(5): 271-275.
Citation: ZHENG Xiang-Ming, WANG Du, YANG Qi, TANG Zheng-Lian, ZHANG Chun. Time-Frequency Analysis of Multi-Mode Lamb Waves by Improved HHT[J]. Nondestructive Testing, 2008, 30(5): 271-275.

基于改进HHT的多模式Lamb波信号的时频分析

基金项目: 

湖北省自然科学基金资助项目(2004ABA019);湖北省教育厅资助项目(2004D009);宁波市自然科学基金资助项目(2006A610025)

详细信息
    作者简介:

    郑祥明(1971-),男,副教授,工学博士,主要研究方向为超声检测与评价。

  • 中图分类号: TB553;TB52+6;TG115.28

Time-Frequency Analysis of Multi-Mode Lamb Waves by Improved HHT

  • 摘要: Hilbert-Huang变换(HHT)是一种新的分析非平稳非线性信号的方法,是用经过带通滤波器组滤波后再进行HHT分析的方法。使用该方法对多模式Lamb波信号进行了分析,能有效分离信号中的各固有模态函数(IMF)分量,消除了噪声干扰。改进HHT变换结果的图线光滑清晰,可解释性好,使用该方法对Lamb波进行分析具有可行性和有效性。
    Abstract: Hilbert-Huang transform is a new method to analyze non-stationary and non-linear signals. The multi-mode Lamb wave signals were analyzed by an improved HHT method, which combined band-pass filter group with HHT analysis. Using this technique, the Intrinsic Mode Function, IMF components were separated efficiently and the noise was suppressed dramatically, which suggested that this method was feasible and effective for Lamb wave analysis.
  • [1] Huang N E, Shen Z, Long S R, et al. The empirical mode decomposition and the Hilbert spectrum for nonlinear and no-stationary time series analysis[J]. Pro R Soc Lond A,1998:903-995.
    [2] Wei Huang, Zheng Shen, Norden E Huang. Engineering analysis of biological variables: an example of blood pressure over 1 day[J]. Proc Natl Acad Sci USA,1998,95(9):4816-4821.
    [3] 宋平舰,张 杰.二维经验模态分解在海洋遥感图像信息分离中的应用[J].高技术通讯,2001,11(9):62.
    [4] 陈 隽,徐幼麟.HHT方法在结构模态参数识别中的应用[J].振动工程学报,2003,16(3):383-388.
    [5] Yang J N, Lei Y. Identification of natural frequencies and damping ratios of linear structures via Hilbert transform and empirical mode decomposition[C]. Proceedings of the IASTED International Conference on Intelligent Systems and Control, Santa Barbara: IASTED/Acta Press,1999:310-315.
    [6] Yang J N, Lei Y. System identification of linear structures using Hilbert transform and empirical mode decomposition[C]. Proceedings of the 18th International Modal Analysis Conference. San Antonio, Texas: 2000:213-219.
    [7] Yang J N, Lei Y, Huang N. Damage identification of civil engineering structures using Hilbert-Huang transform[C]. Proceedings of the 3rd International Workshop on Structural Health Monitoring: New York,2001:544.
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出版历程
  • 收稿日期:  2007-06-27
  • 刊出日期:  2008-05-09

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