Application of improved HHT in multi-mode Lamb wavestest for laminated composite material

HU Yong; XU Chun-guang; ZHOU Shi-yuan; XU Han-hui

doi:10.13873/j.1000-97872009.06.015

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Application of improved HHT in multi-mode Lamb wavestest for laminated composite material

更新时间：2025-09-11

- Application of improved HHT in multi-mode Lamb wavestest for laminated composite material
- Vol. 28, Issue 6, Pages: 110-113(2009)
- 作者机构：
  
  北京理工大学控制与检测实验室
- 作者简介：
- 基金信息：
- DOI：10.13873/j.1000-97872009.06.015
  CLC： TB33
- Published：2009
- 稿件说明：
移动端阅览
[1]胡勇,徐春广,周世圆,许寒辉.HHT在复合材料Lamb波检测中的应用[J].传感器与微系统,2009,28(06):110-113.

HU Yong, XU Chun-guang, ZHOU Shi-yuan, et al. Application of improved HHT in multi-mode Lamb wavestest for laminated composite material[J]. 2009, 28(6): 110-113.
[1]胡勇,徐春广,周世圆,许寒辉.HHT在复合材料Lamb波检测中的应用[J].传感器与微系统,2009,28(06):110-113. DOI： 10.13873/j.1000-97872009.06.015.

HU Yong, XU Chun-guang, ZHOU Shi-yuan, et al. Application of improved HHT in multi-mode Lamb wavestest for laminated composite material[J]. 2009, 28(6): 110-113. DOI： 10.13873/j.1000-97872009.06.015.

摘要

Lamb波信号是典型的非平稳非线性信号

根据无损检测的需要

采用改进的Hilbert-Huang变换（HHT）方法

克服了多模式Lamb信号间的相互干扰

消除了噪声影响。以带有缺陷的复合材料层合板为实验对象

结果证明:本方法能够有效分离信号中的各个固有模态函数（IMF）分量

通过各分量瞬时幅值的峰值回归直线

可准确地对缺陷尺寸进行分析与评估。

Abstract

Hilbert-Huang transform（HHT） is a new method to analyze non-stationary and non-linear signals.The multi-mode Lamb waves signals are analyzed by an improved HHT method

which combined band-pass filter group with HHT analysis.By the intrinsic mode function

IMF components are separated efficiently

and the noise is suppressed dramatically

which suggestes that this technique is feasible and effective for Lamb waves testing.

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references

HHT方法在结构模态参数识别中的应用 [J]. 陈隽,徐幼麟. 振动工程学报 . 2003(03)

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