Time frequency analysis of dispersive waves by means of wavelet transform

被引：157

作者：

Kishimoto, K

Inoue, H

Hamada, M

Shibuya, T

机构：

[1] Department of Mechanical and Intelligent Systems Engineering, Tokyo Institute of Technology, Tokyo, 152, 2-12-1, O-okayama, Meguro-ku

[2] Communication and Switching Laboratories, NTT Corporation, Musasino-shi, Tokyo, 180, 3-9-11, Midori-cho

来源：

JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME | 1995年 / 62卷 / 04期

关键词：

D O I：

10.1115/1.2896009

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

A new approach is presented for investigating the dispersive character of structural waves. The wavelet transform is applied to the time-frequency analysis of dispersive waves. The flexural wave induced in a beam by lateral impact is considered. It is shown that the wavelet transform using the Gabor wavelet effectively decomposes the strain response into its time-frequency components. In addition, the peaks of the time-frequency distribution indicate the arrival times of waves. By utilizing this fact, the dispersion relation of the group velocity cart be accurately identified for a wide range of frequencies.

引用

页码：841 / 846

页数：6

共 22 条

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