Time-delay estimation for the multi-mode ultrasonic Lamb waves based on the chirplet dispersion transform

被引：0

作者：

Xing, Hongyan ^{[1
]}

Liu, Zhaoquan ^{[1
]}

Wan, Mingxi ^{[1
]}

机构：

[1] Dept. of Biomed. Eng., Sch. of Electron. and Info. Eng., Xi'an Jiaotong Univ., Xi'an 710049, China

来源：

Shengxue Xuebao/Acta Acustica | 2002年 / 27卷 / 04期

关键词：

Dispersion (waves) - Mathematical transformations - Nondestructive examination - Parameter estimation;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Multi-mode ultrasonic Lamb waves, which are suitable for nondestructive testing of thin plates, have dispersion characters and accompany with a lot of useful information of time delay. But there are many difficulties to estimate the time delay parameter. Based on the adaptive chirplet dispersion transform, a new method was put forward for the time delay estimation to make the parameter estimation possible. The results of the simulations and experiments show its effectiveness.

引用

页码：351 / 356

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